NBS TECHNICAL NOTE 747

Critical Evaluation of Data

in the Physical Sciences -

A Status Report on the

National Standard

Reference Data System

June 1972
NATIONAL BUREAU OF STANDARDS

The National Bureau of Standards1 was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and

technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measure- ment system, (2) scientific and technological services for industry and government, (3) a technical basis for equity in trade, and (4) technical services to promote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research, the Institute for Applied Technology, the Center for Computer Sciences and

Technology, and the Office for Information Programs.

THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates

that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of a Center for Radiation Research, an Office of Measurement Services and the following divisions: Applied Mathematics—Electricity—Heat—Mechanics—Optical Physics—Linac

Radiation2—Nuclear Radiation 2—Applied Radiation 2—Quantum Electronics3—

Electromagnetics3—Time and Frequency3—Laboratory Astrophysics3—Cryogenics3

. THE INSTITUTE FOR MATERIALS RESEARCH conducts materials research lead- ing to improved methods of measurement, standards, and data on the properties of

well-characterized materials needed by industry, commerce, educational institutions, and

Government; provides advisory and research services to other Government agencies;

and develops, produces, and distributes standard reference materials. The Institute consists of the Office of Standard Reference Materials and the following divisions: Analytical Chemistry—Polymers—Metallurgy—Inorganic Materials—Reactor

Radiation—Physical Chemistry.

THE INSTITUTE FOR APPLIED TECHNOLOGY provides technical services to pro- mote the use of available technology and to facilitate technological innovation in industry and Government; cooperates with public and private organizations leading to the development of technological standards (including mandatory safety standards), codes and methods of test; and provides technical advice and services to Government agencies

upon request. The Institute also monitors NBS engineering standards activities and

provides liaison between NBS and national and international engineering standards

bodies. The Institute consists of a Center for Building Technology and the following

divisions and offices: Engineering Standards Services—Weights and Measures—Invention and Innovation—Product Evaluation Technology—Electronic Technology—Technical

Analysis—Measurement Engineering—Fire Technology—Housing Technology4 —Federal Building Technology4—Building Standards and Codes Services4—

Building Environment4—Structures, Materials and Life Safety4—Technical Evaluation and Application4

. THE CENTER FOR COMPUTER SCIENCES AND TECHNOLOGY conducts re- search and provides technical services designed to aid Government agencies in improving cost effectiveness in the conduct of their programs through the selection, acquisition,

and effective utilization of automatic data processing equipment; and serves as the principal focus within the executive branch for the development of Federal standards for automatic data processing equipment, techniques, and computer languages. The Center

consists of the following offices and divisions: Information Processing Standards—Computer Information—Computer Services —Systems Development—Information Processing Technology.

THE OFFICE FOR INFORMATION PROGRAMS promotes optimum dissemination and accessibility of scientific information generated within NBS and other agencies of

the Federal Government; promotes the development of the National Standard Reference Data System and a system of information analysis centers dealing with the broader

aspects of the National Measurement System; provides appropriate services to ensure

that the NBS staff has optimum accessibility to the scientific information of the world,

and directs the public information activities of the Bureau. The Office consists of the following organizational units: Office of Standard Reference Data—Office of Technical Information and

Publications—Library—Office of International Relations.

1 Headquarters and Laboratories at Gaithersburg, Maryland, unless otherwise noted; mailing address Washington, D.C. 20234.

2 Part of the Center for Radiation Research.

3 Located at Boulder, Colorado 80302.

' Part of the Center for Building Technology.
IOEAL BUREAU OF STANDARDS

3 1972

OUL^L^

(oo Critical Evaluation of Data in the

3 Physical Sciences -

A Status Report on the

National Standard Reference Data System June 1972

Stephen A. Rossmassler, Editor

Office of Standard Reference Data

National Bureau of Standards

Washington, D.C. 20234

NBS Technical Notes are designed to supplement the Bureau's regular publications program. They provide a means for making available scientific data that are of

transient or limited interest. Technical Notes may be

listed or referred to in the open literature.

*<"*>

U.S. DEPARTMENT OF COMMERCE, Peter G. Peterson, Secretory

NATIONAL BUREAU OF STANDARDS, Lawrence M. Koshner, Acting Director,

Issued November 1972
National Bureau of Standards Technical Note 747

Nat. Bur. Stand. (U.S.), Tech. Note 747, 79 pages (Nov. 1972) CODEN: NBTNAE

For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 (Order by SD Catalog No. 03.46:747). Price $1.25.
PREFACE

The previous report on the status of the National Standard Reference

Data System appeared two years ago. Since that time, the programs of the

system have been operating with substantially a constant budget. The

limitations of steady-state funding mean that few new projects are started

each year and that few on-going projects can be staffed or supported at a level commensurate with their assigned task. Change, therefore, is slow.

However, since the last Status Report appeared (NBS Technical Note 553,

June, 1970) a number of large undertakings have reached full productivity, a new channel has been established for the primary distribution of the output

of the system, and explorations are underway for a modest data program in

the area of mechanical properties. These developments are described in some detail in the present report.

Communication and collaboration have continued with other programs

sharing the goals of NSRDS. While government-wide constrictions on research

and development funding have reduced some data-evaluation efforts of Federal

agencies, the challenge of emerging national problems (air and water

quality, alternate energy sources, etc.) offer major opportunities for joint

technical undertakings, in which reliable reference data can be vitally

important. The Office of Standard Reference Data is aware of the need for a flexible but soundly-based program which can respond to these challenges.

Until the appearance of the new Journal of Physical and Chemical

Reference Data , the NSRDS-NBS Series was the principal outlet for the

primary products of this program. There are now 50 titles in this series;

in addition, approximately 70 other data compilations, bibliographies and

translations have appeared. Over 100,000 copies of NSRDS-NBS Series

documents have been distributed since this program began, and this total is

augmented by wide-spread secondary distribution of data in various

handbooks. The distribution of the core of the NSRDS output through the new

journal is expected to improve the accessibility of reliable reference data

to the scientific and technical community.

The National Standard Reference Data System is intended to provide a basic service to the entire scientific and technical community of the United

States. The success of the program depends very critically on feedback from

the users of the output. We welcome all comments, suggestions, and

criticisms on the program.

David R. Lide, Jr.

Chief, Office of Standard Reference Data

III
STAFF OF THE OFFICE OF STANDARD REFERENCE DATA

NATIONAL BUREAU OF STANDARDS

WASHINGTON, D. C. 20234

CHIEF; David R. Lide, Jr. (921-2467)

PROGRAM MANAGERS:

Thermodynamics § Transport

Properties

Atomic § Molecular Data:

Chemical Kinetics:

Solid State Data:

Nuclear Data:

Colloid and Surface

Properties

Mechanical Properties:

Data Systems Design:

Information Services:

Howard J. White, Jr. (921-2581)

Stephen A. Rossmassler (921-2581)

Lewis H. Gevantman (921-2229)

Lewis H. Gevantman (921-2229)

Lewis H. Gevantman (921-2229)

Howard J. White, Jr. (921-2581)

Lewis H. Gevantman (921-2229)

Joseph Hilsenrath (921-2050)

Herman M. Weisman (921-2583)

All telephone numbers are on Area Code 301

IV
Contents

General Survey

PAGE

A. Origin of the National Standard Reference 1

- Data System

B. Organization of NSRDS 1 C. Standard Reference Data Legislation 3 D. Journal of Physical and Chemical Reference 3 Data

E. Advisory Mechanism 3 F. International Cooperation 4 G. Highlights of Recent Accomplishments 5

II. Progress of the Data Evaluation Program 8

A. Thermodynamic and Transport Properties 9 B. Atomic and Molecular Data 19

C. Chemical Kinetics 28

D. Solid State 31

E. Nuclear Data 35

F. Colloid and Surface Properties 37

G. Mechanical Properties 38

III. Data Systems Design Activities 40

IV. Information Services 52

Appendices

Appendix I: Authorities: FCST Policy and 54

Standard Reference Data Act

Appendix II: Continuing Data Centers in the 57

United States

Appendix III: NSRDS Publications List 65
ABSTRACT

This is a report on the status of the National Standard Reference Data

System as of June 1972. Recent activities of the Office of Standard

Reference Data are summarized and future plans are indicated, A complete

list of data evaluation projects supported by the Office of Standard

Reference Data during Fiscal Year 1972 is included; this list also includes

projects which received financial support during an earlier fiscal year, and

which are still actively involved in some aspect of data compilation and

evaluation, or which are still preparing a product for publication.

Progress in data processing and in information services is reviewed. The

appendix includes a listing of continuing data centers in the United States

and a list of publications resulting from the standard reference data

program.

Key words: Atomic and molecular data; chemical kinetics; colloid and

surface properties; data systems design; information services; mechanical

properties; nuclear data; standard reference data; solid state data;

thermodynamic and transport properties.

VI
CRITICAL EVALUATION OF DATA IN THE PHYSICAL SCIENCES

A STATUS REPORT ON THE NATIONAL STANDARD REFERENCE DATA SYSTEM

June 19 72

: I. GENERAL SURVEY

A. Origin of the National Standard Reference Data System

The formal existence of the National Standard Reference Data System

dates from 1963, when the Federal Council for Science and Technology asked

the National Bureau of Standards to assume primary responsibility in the

Federal Government for promoting and coordinating the critical evaluation of

numerical data in the physical sciences. The program was conceived as a decentralized national effort, with financial support coming from a variety

of Government and private sources, but with NBS responsible for the overall

planning and coordination. The existing data compilation activities

supported by NBS and other Government agencies were to be strengthened, new projects started in neglected technical areas, and the entire effort molded

into a coherent program.

The technical scope of the program is restricted to well-defined

physical and chemical properties of substances and systems which are wellcharacterized. While this definition leaves some borderline cases, the

intent is to concentrate the effort on intrinsic properties which are clearly defined in terms of accepted physical theory. Properties which

depend upon arbitrarily defined characteristics of the measurement technique

are generally excluded. Likewise, materials of uncertain or variable

composition are not included. Biological properties and data relating to

large natural systems (e.g. the atmosphere, the oceans) also fall outside

the program.

One major aim of the program is to provide critically evaluated

numerical data, in a convenient and accessible form, to the scientific and

technical community. Certain secondary outputs, such as annotated

bibliographies and procedures for computerized handling of data, are also

made available. A second equally important aim is to provide feedback into

experimental work to help raise the general standards of measurement. That

is, by communicating the experience gained in evaluating the world output of

data in the physical sciences, NSRDS helps to advance the level of

experimental techniques and improve the reliability of physical

measurements

.

B. Organization of NSRDS

When the National Bureau of Standards accepted the primary

responsibility for the National Standard Reference Data System, the Office

of Standard Reference Data (OSRD) was established at NBS to manage the

program. This office is now located under the Associate Director for

Information Programs. The OSRD performs several functions. It has the

responsibility for allocating that part of the NBS budget which is spent on critical data evaluation, both within the NBS technical divisions and

through contracts with outside groups. The staff of the office act as monitors for all projects which are supported. The management of the

publications program of NSRDS is also in the hands of OSRD, and an information service is operated on a limited scale. In addition, OSRD

maintains close contact with other data compilation activities, both in the

United States and abroad. It attempts, both domestically and

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internationally, to avoid needless duplication and to encourage coverage of

all important technical areas. Finally, a small group within OSRD is

engaged in research and development oh computer handling of data and in

application of automated procedures to the activities of data centers.

The actual compilation and evaluation of data takes place in many

widely separated groups. It is these groups which form the components of

the National Standard Reference Data System. The fact that these groups

vary greatly in size, organizational structure, and source of financial

support leads to a certain degree of diffuseness in the system. However, it

is instructive to recognize two broad types of components in NSRDS. The

first is the continuing data center, which has a charter (formal or informal) to cover a certain technical area on a continuing basis. Ideally,

such centers have an assurance of stable long-term financial support. The

task of a data center is to search the world literature on a regular basis,

to retrieve and index papers within its scope of interest, to extract the

numerical data, and to carry out critical evaluation leading to publication

of tables or reviews. Many of the centers are highly mechanized and have

large, computer-based files from which bibliographic citations and data can be retrieved. Generally, they are able to respond to requests for specific

information from the scientific public.

The other type of component is the individual scientist (or small group

of collaborators) who produces a "one-shot" compilation or critical review

as a part of what he regards as his normal scientific activity. Many

valuable data compilations have been produced in this way. Such individuals

do not consider themselves part of a formal data center, and there is

generally no commitment for continuity or updating. The rapid growth of the

scientific literature makes it increasingly difficult for an individual to

do this type of compilation. However, the continuing data centers can serve

a useful function by providing bibliographic back-up for individual

scientists in other locations who wish to write critical reviews or do

critical compilations of limited scope.

In the pattern which has emerged, it is clear that both types of

components are essential for the successful operation of the National

Standard Reference Data System. The concentration of the bibliographic

phase in a relatively small number of continuing data centers offers obvious

advantages. While these centers carry out some of the critical evaluation

of the data, they generally do not have the expertise on their own staff to cover every aspect of the field in question. By enlisting the help of

specialists in other institutions for evaluations and critical reviews, the

data centers can greatly increase the utilization of their resources.

One of the primary goals of the Office of Standard Reference Data is to

establish continuing data centers in all technical areas which fall within

the scope of the program. In addition, the office attempts to provide funds

for individual compilations and critical reviews of well-defined scope and

duration. Since the resources of OSRD are limited, every effort is made to

persuade other agencies and private organizations to participate in the

support of these activities.

A list of continuing data centers in the United States appears in

Appendix II. Those data centers which currently receive financial support

from OSRD are listed by title only, with reference made to their full

description in Chapter II. Projects which are supported primarily from

other sources are described in somewhat more detail. It is significant that

many other Federal agencies and private groups (in addition to OSRD) find

good reasons to support data centers.

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C. Standard Reference Data Legislation

The standard reference data program was established under the general

enabling legislation of the National Bureau of Standards. In addition, in

1968 the Congress provided specific legislative authority for the program

through passage of Public Law 90-396, the Standard Reference Data Act. The

text of the Act is given in Appendix I.

One of the principal features of PL 90-396 is the provision of

authority for recovering some of the cost of the program through user

charges. In order to make this possible, the Secretary of Commerce is

authorized to copyright publications which result from the program and to

assign this copyright to others. Special services provided to individuals

or groups are to be largely reimbursable, while charges for data

compilations of general interest are expected to defray primarily the cost

of their publication and distribution.

D. Journal of Physical and Chemical Reference Data

In 1971, OSRD began exploration of alternate publication procedures

which would make use of the new authority mentioned above and be responsive

to the intentions of Congress in granting it. A simultaneous objective was better (i.e. wider, prompter, and mare user-oriented) dissemination of

Standard Reference Data. As a result of these considerations, a journal

format was selected, to be produced with the active collaboration of the

American Chemical Society and the American Institute of Physics. The first

issue of the quarterly Journal of Physical and Chemical Reference Data

appeared in March 1972.

It is anticipated that the major compilations of physical and chemical

property data produced under the NSRDS program will be published in this

Journal. In addition, the Journal will be open to contributions of

acceptable quality from other sources. The Editorial Board contains

representation from the American Institute of Physics, the American Chemical

Society, and the National Bureau of Standards. The participation of these

societies, with a combined membership of over 150,000, is a recognition of

the key role that individual scientists must play in providing reliable

reference data.

The Journal of Physical and Chemical Reference Data will initially

appear as a quarterly publication, with about 1200 pages planned for Volume

I (1972). Compilations of evaluated data and critical reviews of moderate

length will be published in the Journal. Longer data compilations which

would overcrowd the regular issues will appear as Supplements to the

Journal. In addition, copies of individual compilations appearing in the

Journal will be available for separate purchase. Information on subscriptions may be obtained from the American Chemical Society, 1155

Sixteenth Street, N. W. , Washington, D. C. 20036.

E. Advisory Mechanism

For good management of the NSRDS program it is essential to have

reliable feedback from the scientific and technical community. At the time

the program was established, the services of the National Academy of

Sciences-National Research Council were enlisted for this purpose. The

Executive Committee of the Office of Critical Tables of the NAS-NRC provided

the focal point for advisory services to the Office of Standard Reference

Data. That Office arranged for meetings of advisory panels in the various

technical areas, which made recommendations on priorities to OSRD.

As a result of reorganization within the NAS-NAE-NRC, the Office of

Critical Tables was replaced in 1969 by the Numerical Data Advisory Board

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(NDAB). The scope of the NDAB includes numerical data of concern to all

parts of science and technology. The NDAB also serves as a focus for

coordination with certain other national information programs (such as the

National Materials Advisory Board) and international programs parallel to

NSRDS. In this latter role, NDAB has responsibility for the US National

Committee for CODATA. International undertakings are described more fully

in a following section of this report.

The NDAB also administers advisory panels in several of the program

areas of NSRDS. These panels meet periodically to discuss needs and

priorities within each program area. The membership of the panels is drawn

from industry, universities, and Government; an effort is made to achieve

coverage of the major specialities within each area. The NDAB submits a report to OSRD after each panel meeting, in which the current activity is

appraised and suggestions made for future emphasis.

In addition to the principal advisory panels, ad hoc subpanels are convened at the request of OSRD to discuss problems of a more specific

nature. Subpanels of this type have been organized in fields such as Mossbauer spectroscopy, interatomic distances, electrical properties of

solids, and thermodynamic properties of aqueous electrolyte solutions.

Meetings of such groups have led to the establishment of new compilation

projects or (in some cases) to the recommendation of procedures for

obtaining and reporting experimental data in the particular field. The NDAB

also serves as cosponsor with OSRD of symposia and conferences on special

topics when a broader level of professional interaction appears appropriate

to a special subject. An example of this latter type of advisory mechanism

is the symposium held in June, 1972, on industrial needs for critically

evaluated P-V-T data on ethylene and other gases.

In its broader responsibilities, NDAB is concerned with data outside

the physical sciences and with data on less well-defined properties and

substances

F. International Cooperation

In the period since the establishment of NSRDS, data evaluation

activities in other parts of the world have increased considerably. Formal

governmental programs similar to NSRDS have been established in several

countries. In the U. K. , the Office of Scientific and Technical Information

(OSTI) administers a program which includes the support of a number of data

centers in the physical sciences. In the Soviet Union, the Academy of

Sciences supports several data evaluation projects in the physical sciences,

and the State Service for Standard and Reference Data (GSSSD) has broad

responsibility for scientific and technical data. The Office of Standard

Reference Data maintains liaison with these groups with the aim of avoiding

duplication in data compilation projects and promoting maximum compatibility

of output. Proposals requesting support of projects in subject areas of

major concern to two or more countries are circulated to those countries for

comment.

In November, 19 71, a symposium on data compilation was held in Tokyo

under the auspices of the U.S. - Japan Treaty on Scientific Cooperation.

Representatives from OSRD and from several NSRDS Data Centers participated

in this symposium. A base was established for future cooperation on data

programs in the two countries.

The establishment of the Committee on Data for Science and Technology

(CODATA) in 1966 has provided a formal framework for international

cooperation. CODATA is a committee of the International Council of

Scientific Unions (ICSU) and contains representation from ten international

unions and, at present, thirteen countries. The central office is located

-4-
in Frankfurt, Germany. The main purpose of CODATA is to encourage, on a world-wide basis, the production and distribution of critically evaluated

numerical data. One of its first tasks was to publish an International

Compendium of Numerical Data Projects (Springer-Verlag, New York-HeidelbergBerlin, 1965J. This volume lists identifiable data compilation projects

throughout the world, with information on their scope, mode of operation,

and form of dissemination of output. A revision is in progress.

CODATA has established task groups in a number of special areas,

including computer handling of numerical data, key values of thermodynamic

properties, chemical kinetics, and fundamental constants. Scientists

associated with NSRDS data projects are active in all of these task groups.

Probably the most significant accomplishment of any of these bodies is the

adoption of standard values for thermodynamic properties of certain key

substances. This will reduce inconsistencies and uncertainties resulting

from the use of data from different thermodynamic tables and is hopefully

the first step toward creation of an internationally accepted set of tables

of thermodynamic properties. The staff of the Chemical Thermodynamics Data

Center at NBS has played a major role in this effort.

Other task groups are now being organized in such areas as transport

properties, presentation of data in the primary literature, and data

accessibility.

A prominent example of international cooperation on a working level is

provided by the Thermodynamics Tables project of the International Union of

Pure and Applied Chemistry. The aim of this project is to generate standard

tables of thermodynamic properties of industrially important gases. It is

directed by Dr. Selby Angus of Imperial College, London. Several data

projects in the United States supported by the Office of Standard Reference

Data form key parts of this program.

A part of the NSRDS program derives from bilateral cooperative efforts

under the auspices of Special Foreign Currency Programs authorized by Public

Law 480 and other legislation. Certain funds allocated to NBS are used to

support projects which result either in data compilations or in dataoriented products, such as theoretical calculations, bibliographies, or translations, which are helpful to NSRDS data centers and to users of

reference data. The projects which receive grants for this work (primarily

in India and Israel) are monitored by NBS data center scientists and OSRD

staff. Special Foreign Currency projects associated with NSRDS are included

with appropriate identification in Section II of this report.

G. Highlights of Recent Accomplishments

The ultimate justification of the NSRDS program must rest on the

usefulness of its output to scientists and engineers who require physical

property data for the solution of their problems. During the last two years

the Office of Standard Reference Data has placed increased emphasis on identifying the needs for reliable data in various areas, particularly those

related to important national problems that have a strong technological

component. Not surprisingly, it is often found that the data needed to

attack a particular problem must come from a variety of disciplines. The

coherent structure of the National Standard Reference Data System is a strong asset in focussing the resources of many specialized, disciplineoriented centers on a specific problem or mission. The collections of

evaluated data maintained by these centers can be used to provide prompt

responses to new data demands.

-5-
Examples of NSRDS efforts at providing data pertinent to important

national problems are given below. These include completed projects as well

as those in progress or in the planning stage.

Improvements in Incinerator Design

In 1970 the Research Committee on Industrial Wastes of the American

Society of Mechanical Engineers wished to prepare a monograph on industrial

incinerator design to upgrade existing design practices and produce more efficient, less polluting incinerators. They realized that thermodynamic

data on the combustion process were needed. The Chemical Thermodynamics

Data Center, with its expertise and extensive files of data on thermodynamic

processes, was in an ideal position to collect such data quickly and

inexpensively. With support from the Society a compilation of heats of

combustion of about 1000 substances commonly burned in industrial

incinerators has been prepared. This compilation combined with information

on how to use it for incinerator design will provide a basic handbook for

engineers in the field. This handbook is expected to make an important

contribution to the design of more efficient and reliable industrial

incinerators.

Metering of Gases Transferred in Pipelines

The rapid increase in the production of ethylene and related gases, as well as the introduction of new methods of storage and transfer, has

presented a difficult measurement problem. Flow through pipelines is most

easily measured in terms of volume, which must be converted to units of

weight for accurate records of material balance in transfers from one place

(or owner) to another. This conversion requires an accurate equation of

state (PVT surface) for the fluid in question, and under current practices

the data must cover a wide range of temperature and pressure. In the case

of ethylene, our knowledge of the PVT surface is inadequate to meet present

needs, and similar problems are expected to arise in the near future with

gases such as propylene and butadiene. The Office of Standard Reference Data

organized a three-day meeting on this subject in June 1972, which was attended by representatives of a number of industrial concerns. The nature

of the problem was outlined and priorities established; efforts are now being made to set up suitable data evaluation projects. The objective will

be to produce definitive tables and formulations that will be accepted by

all parties concerned and that will remove the confusion currently existing

in custody transfer of ethylene.

Surfactant Data

The publication of NSRDS-NBS-36 , Critical Micelle Concentrations of

Aqueous Surfactants , has provided chemists, biochemists^ agricultural

scientists, and sanitary engineers with a definitive collection of data for

characterizing the surface activity of 720 compounds used in detergency and

washing, the dispersion of dyes and pigments, the benef iciation of ores and

other industrial applications. The publication brings together in a single

comprehensive volume all of the pertinent reference information on a particular category of chemically active materials and provides a highly

important data resource for a number of fields of great national importance.

Air Pollution

The present concern with understanding the chemistry of polluted

atmospheres has revealed many gaps in our knowledge of reaction rate

-6-
constants and other properties of the most common air pollutants. Modelling

calculations intended to predict the consequences of introducing a pollutant

into the atmosphere under a particular set of circumstances often give a very uncertain result because of poorly known input data. NSRDS is now collecting the best data for this purpose, including estimates made by

experts when no experimental measurements are available. The Chemical

Kinetics Data Center has taken the lead in this effort, drawing on their

extensive files and experience in compiling rate data. Preliminary reports

on data relevant to stratospheric pollution have been prepared, and a more definitive collection of reaction rates, photochemical data, other pertinent

properties is in progress.

Aqueous Electrolytes

A new data center has been established on the thermodynamic properties

of aqueous electrolytes in order to meet data needs in such diverse fields

as battery development, steam turbine design, biochemistry, sanitary

engineering, and oceanography. The Center will compile data on salt

solutions that are important in all of the above areas. The output will

consist of broad compilations of critically evaluated electrolyte data plus

detailed treatments of specific important systems.

Other Plans

Several systematic studies are being carried out with the aim of

identifying the needs for physical property data in major R 5 D programs. A

panel of the Numerical Data Advisory Board is considering data requirements

for the development of practical methods of coal gasification. A similar

study is being considered on innovative techniques in electrical power

transmission. The need for data on the mechanical properties of metals and

alloys is being studied in some detail, as pointed out elsewhere in this

report. Studies such as these will be of value in setting priorities on the

allocation of resources in the NSRDS program.

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II. PROGRESS OF THE DATA EVALUATION PROGRAM

The original (1963-64) planning of the NSRDS program envisioned a twoyear period of moderate funding, followed by fairly rapid expansion to a level which would have permitted a comprehensive attack on all subject-areas

of high priority. Under such a schedule, data evaluation activities would

have processed a major portion of the scientific literature since about

1950, and would then have moved to a steady-state handling of the current

material as it appeared. The actual expansion has been far more modest than

anticipated; in fact, the operating budget of the Office of Standard

Reference Data has changed very little during Fiscal Years 1967-1972. Many

of the initial goals, therefore, have not yet been reached. However, a good

start has been made in at least two technical areas, and much experience has

been gained in modes of operation of data centers. Of equal importance is

the insight achieved into users' interests on the basis of feedback

involving a now-substantial volume of data compilations and critical

reviews.

The scope of the standard reference data program has been divided into seven technical areas for operational convenience: (1) Thermodynamics and

Transport Properties, (2) Atomic and Molecular Data, (3) Chemical Kinetics,

(4) Solid State Data, (5) Nuclear Data, (6) Colloid and Surface

Properties, and (7) Mechanical Properties. This chapter is devoted to

progress reports for these technical areas. A general discussion is given

of important developments in each area, followed by individual progress

reports for each data evaluation project supported (fully or partially) by

the Office of Standard Reference Data during Fiscal Year 1972, plus those

projects supported during previous years which remain active. Descriptions

of the individual projects and their output are essentially technical in

nature, and are addressed to potential users who have their own needs

clearly in mind. For this reason, the report avoids generalized indications

of applications of the data.

The area of Mechanical Properties was not discussed in any detail in

the previous (1970) NSRDS Status Report. Since then, a study has been

initiated of the subject content and users' needs in this area, to provide

the basis for establishing a data evaluation program. An interim report on that study is included.

The progress reports include both individual, short-term projects and

continuing data centers which receive at least a part of their support from

the Office of Standard Reference Data. A supplementary list of continuing

data centers in the United States which are recognized as part of NSRDS

(even though they do not receive direct financial support from NBS) is given

in Appendix II. A full list of publications which have appeared under the auspices of

the NSRDS program may be found in Appendix III.

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A. THERMODYNAMIC AND TRANSPORT PROPERTIES

The two years since the last status report have seen two developments

which have added to and have caused changes in the on-going basic program.

These are the further evolution of international programs and the increase

of activities focussed on specific problems of a practical engineering

nature.

Considering the latter of these first, it might be pointed out that

data needed for the solution of a specific engineering problem often do not

differ in kind or in accuracy from those needed for solving any other type

of problem. Focussing on the specific problem leads to identification of

specific data needs and hence makes possible packaging together of the

needed data in the form most useful to those involved in solving the

problem.

An example of such an activity is the project concerned with assembling

enthalpy data needed in the design of industrial incinerators, a project of

the Office of Standard Reference Data sponsored by the American Society of

Mechanical Engineers and carried out by the NBS Physical Chemistry Division

using the extensive files of the Thermochemical Data Group. Further details

are given in the descriptions of individual projects. In a similar,

although less formal way, contributions have been made to a planned handbook

which lists selected properties of a set of chemical species of importance

in, air pollution.

Another example - which is an entirely different activity - is a conference held at Airlie House, Warrenton, Va. , June 13-16, 1972, on data

needs for custody transfer and design calculations for ethylene and related

substances. The conference was sponsored by the Numerical Data Advisory

Board of the National Academy of Sciences-National Research Council at the

request of the Office of Standard Reference Data. The conference was held

to determine what ranges and reliabilities of data were needed for custody

transfer calculations and for equipment design and what further steps, if

any, should be taken to provide them.

Finally, mention can be made of some steps taken with respect to the

Bulletin of Thermodynamics and Thermochemistry. The Bulletin provides

bibliographic information on thermochemical data, indexed according to

substance and property, on an annual basis. To make this reference source

more valuable, it is being prepared in a searchable magnetic tape form.

Turning to international activities, an important development has been

the CODATA Task Group on Key Values for Thermodynamics. This Task Group has

repared a set of values of standard enthalpies of formation, standard

entropies, and standard enthalpy increments referred to 298. 15K for 32

chemical species of particular importance in thermochemical calculations.

The set of values was widely circulated for comment and has recently been

published by CODATA as an internationally accepted set. The Task Group is

currently preparing an additional provisional set of values for another

group of 15 important compounds. The Thermochemical Data Group at NBS and a counterpart Russian group played the primary roles in preparing the initial

provisional sets. A further, closely related, development is a proposed USUSSR project for preparation of jointly acceptable thermochemical tables.

This project is still in the planning stages.

The IUPAC Commission on Thermodynamics and Thermochemistry sponsors a Thermodynamic Tables Project under Dr. Selby Angus of Imperial College,

London. The purpose of the project is the development of internationally

agreed upon tables of the P-V-T properties of industrially important gases.

The Project relies on the cooperation of data evaluators throughout the

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world, who prepare tables for individual gases, and a series of panels of

experts who compare tables and, if necessary, resolve differences between

them. There are evaluation projects leading to the preparation of tables

for six gases which are supported wholly or in part by the Office of

Standard Reference Data. In addition seven of eleven U. S. panel members

receive support from the Office of Standard Reference Data as does the

Cryogenic Data Center which serves as the primary source of bibliographic

information for all evaluations sponsored by the Project.

Another IUPAC Commission with a long-term interest in data is the

Commission on Equilibrium Properties of the Analytical Chemistry Division,

which is interested in complex stability constants. A project on liquidliquid distribution reactions is being sponsored by the Office of Standard

Reference Data in cooperation with the Commission's overall program.

Finally, mention should again be made of the Bulletin of Thermodynamics

and Thermochemistry which is sponsored by the IUPAC Commission on Thermodynamics and Thermochemistry and has an international editorial board

and list of contributors.

The productivity of the program on thermodynamic and transport

properties has remained high. There have been two monographs published in

the NSRDS-NBS Series (32, 37) three Technical Notes (270-5, 270-6 and 384),

and one bibliography (NBS-OSRDB-70-1) . Publication details will be found

elsewhere in this report. One paper in the first issue of the Journal of

Physical and Chemical Reference Data , namely that of Marrero and Mason,

resulted from the program on thermodynamics and transport properties, and

five additional papers and two major monographs, each of which will

constitute a Supplement to the Journal, have been scheduled for early

publication.

Eight products of the U.S.S.R. standard reference data program, which

have been translated at the request of the National Bureau of Standards,

should also be mentioned since, for the most part, they cover subjects in

the thermodynamics and transport properties area. These are listed in

detail elsewhere in this report.

Active Projects:

1. Title : Chemical Thermodynamic Data Group

Principal Investigators : D. D. Wagman, W. H. Evans

Location! Physical Chemistry Division, NBS,

Washington, D. C. Date Initiated : 1963 (Data Center started in 1940)

Objective : Th~e compilation and evaluation of the heats, entropies and

free energies of formation of all inorganic substances in the

standard state and of selected thermodynamic properties of

selected organic materials.

Current Status : The systematic review and evaluation of the

thermodynamic properties of compounds of a group of 61 elements

(the first 61 in the "Standard Order" of arrangement) and of the

six alkaline earth metals, have been completed and published.

Work on the rare earths is well advanced and work on the alkali

metals has been started.

The group has played a major role in the activities of the

CODATA Task Group on Key Values for Thermodynamics. The Task

Group has prepared two sets of values of standard enthalpies of

formation, standard entropies and standard enthalpy increments,

all referred to 298. 15K, of chemical species of particular

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importance in thermochemical calculations. One set covering 32

chemical species has been widely circulated for comment and then

published by CODATA as an internationally accepted set. A second

set covering 15 chemical species has been published in provisional

form for comment.

A compilation of the heats of formation and combustion of

selected organic compounds has appeared in the Journal of Physical

and Chemical Reference Data (see Appendix III, NSRDS PuBTications

ruty:

Automated techniques for data and text handling have been

developed further. All new data and related bibliographic

information are stored on magnetic tape and printed on data cards

for easy and rapid access. The latest issue of the Bulletin of

Thermodynamics and Thermochemistry has been printed from magnetic

tape and a tape containing the indexing and bibliographic

information in a standard transferable form has been prepared.

Most computer centers should be able to work with this tape and

prepare search programs to utilize the information on it.

Future Plans : The systematic coverage of the standard enthalpies,

Gibbs energies and entropies of compounds will be completed and

the documentation of the evaluation process will be carried out.

The activities involving the Bulletin of Thermodynamics and

Thermochemistry and the international activities mentioned will be

continued.

Title : Extraction of Thermodynamic Information From Papers in

Russian and Other Eastern European Languages

Principal Investigator : Y. Levi

Location! Israel Program for Scientific Translations, Israel

Date Initiated : 1968 (Special Foreign Currency Program fund)

Objective : TFe extraction of pertinent thermodynamic information from

articles written in Russian or other Eastern European languages.

Current Status : This project extracts information as directed from

articles supplied by the project on Chemical Thermodynamic

Properties.

Future Plans : Continuation along current lines.

Title : Thermodynamics of Incinerator Processes

Principal Investigator : Eugene S. Domalski

Location": Physical Chemistry Division, NBS, Washington, D. C.

Date Initiated : 1970 (Project supported by ASME)

Objective : TEe preparation of a compendium of heats of formation of

selected materials for use by engineers concerned with the design

of industrial incinerators for waste disposal.

Current Status : Data on the heats of formation of about 1000 organic

compounds , 40 polymers and about 300 inorganic oxides have been

compiled. The materials have been selected as important in

industrial incineration processes. The data have been arranged in

tabular form and are accompanied by a discussion and aids for use

of the tables and an annotated list of other sources of data.

Future Plans : It is anticipated that the material just mentioned along

with an additional explanatory text, to be prepared elsewhere,

will be published by the American Society of Mechanical Engineers

as a contribution toward pollution abatement. The project has

been completed.

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4. Title : Thermodynamic Data on Organic Compounds

Principal Investigator : B. J. Zwolinski

Location! Thermodynamics Research Center, Texas A§M University,

College Station, Texas

Date Initiated : 1964 (Center also receives funds from other sources,

notably the American Petroleum Institute)

Objective : Compilation and evaluation of data on selected

thermodynamic and thermophysical properties of organic compounds.

Current Status : A monograph on the thermodynamic and physical

properties of the aliphatic alcohols is being published as a supplementary volume of the JPCRD; a full reference is given

elsewhere in this report. Properties evaluated include

refractive index, density, vapor pressure, phase transitions, heat

capacity, properties of the saturated real gas and the ideal gas,

properties of standard states at 25°C and critical properties.

Work has been started on the compilation and evaluation of

the thermodynamic properties of key saturated organic oxygencontaining compounds in the carbon range C, to C,. The thermal

functions (Gibbs energy, enthalpy, entropy and heat capacities as functions of temperature) are being evaluated and tabulated.

The section on single organic compounds in the Bulletin of

Thermodynamics and Thermochemistry is prepared by this center.

Automated methods are used in connection with the preparation of

this section and steps are being taken to automate the center's

bibliographic and data files further.

Future Plans : Comprehensive reports on the halogenated hydrocarbons

and organic oxygen- containing compounds will be completed. The

work on the Bulletin of Thermodynamics and Thermochemistry and

work leading to further automation of the center's files will be

continued.

5. Title : Physical and Thermodynamic Properties of Chemical

Substances

Principal Investigator : A. P. Kudchadker

Location": Indian Institute of Technology, Kanpur, India

Date Initiated : 1970 (Special Foreign Currency Program fund)

Objective : TKe critical analyses of data on the thermodynamic and some physical properties of selected organic compounds.

Current Status : The materials currently being studied are haloalkanes,

in particular the bromo and iodo methanes and the

chlorofluoroethanes. Properties evaluated include refractive

index, density, vapor pressure, phase transitions, heat capacity,

properties of the saturated real gas and the ideal gas, properties

of standard states at 25°C and critical properties.

The work of this center is closely coordinated with that of

the Thermodynamics Research Center at Texas A§M.

Future Plans : The compilation and evaluation of properties of selected

haloalkanes will be completed.

6. Title : Polar Gas Properties

Principal Investigator : Lester Haar

Location : Heat Division, NBS, Washington, D. C.

Date Initiated : 1966

Objective : TKe preparation of comprehensive compendia of critically

evaluated data on the thermodynamic properties of the

technologically important polar gases.

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Current Status : The gas under consideration at the present time is

ammonia. A formulation of the PVT properties of ammonia which is

thermodynamically consistent and which covers the liquid phase and

the dense and ideal gas has nearly been completed.

Future Plans : A definitive report on the PVT properties of ammonia

will be prepared.

7. Title : Thermodynamic Properties of Nitrogen

Principal Investigator : R. B. Stewart

Location": University of Idaho, Moscow, Idaho

Date Initiated : 1969 (Center also receives support from NASA)

Objective : Critical evaluation of thermodynamic data for nitrogen and

compilation of tables of thermodynamic properties for the solid,

liquid and gas phases over the temperature range 10K to 3000K with

pressures up to 10,000 atm.

Current Status : An equation of state has been developed which covers

the ranges cited above. Deviations from the selected experimental

data on which the formulation is based may be as much as one or

two percent for the vapor at very low temperatures and in the

vicinity of the critical point. For all other regions the fit is

considerably better. The results have also been compared with

calorimetric heat capacities, enthalpies, and latent heats and

with speed of sound data.

Future Plans : A final monograph on the PVT properties of nitrogen is

being prepared.

8. Title : Thermodynamic Properties of Propane

Principal Investigator : J. E. Powers

Location! University of Michigan, Ann Arbor, Michigan

Date Initiated : 1971

Objective : Critical evaluation of the data for the thermodynamic

properties of propane and compilation of tables covering these

properties.

Current Status : This project is in its early stages. Emphasis is

being placed initially on the vapor-liquid saturation region from

the triple point to the critical point, the low pressure gas and

the compressed liquid. State data, calorimetric data and speedof-sound are being covered.

Future Plans : Completion of current work and coverage of the solid and

dense fluid regions as well.

9. Title : Cryogenic Data Center

Principal Investigator : N. A. Olien

Location": Cryogenics Division, NBS, Boulder Laboratories,

Boulder, Colorado

Date Initiated : 1959 (OSRD Support 1970) (Center also

receives support from other sources, notably NASA)

Objective : Identification, compilation and indexing of the

thermodynamic properties of fluids of cryogenic interest.

Current Status : Files of bibliographic information on the

thermodynamic properties of fluids of cryogenic interest are maintained current. Custom bibliographies are prepared as needed

and a current awareness service is published weekly.

Future Plans : Continuation along current lines.

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10. Title : Cryogenic Fluid Mixture Properties

Principal Investigator: M. J. Hiza

Locationl Cryogenics Division, NBS Boulder Laboratories,

Boulder, Colorado

Date Initiated : 1971

Objective": TEe compilation and critical evaluation of phase

equilibrium and thermodynamic property data for fluid mixtures of

cryogenic interest.

Current Status : This project is in its early stages. A bibliography

of important equilibrium properties for fluid mixtures of

cryogenic interest is being compiled.

Future Plans : Phase equilibrium and thermodynamic data will be

extracted from the literature and evaluated.

11. Title : Thermodynamic Properties of Fluids in the Critical

Region

Principal Investigator : J. M. H. Sengers

Location": Heat Division, NBS, Washington, D. C. Date Initiated : 1970

Obj ective : Adescription of the thermodynamic properties of fluids in

the vicinity of the critical point.

Current Status : Fluids currently under examination are carbon dioxide

and water. Experimental data in the critical region have been

compiled and critically evaluated. Scaling law techniques are being used to attempt to describe the available data within their

accuracy in the range of about ± 20 °C from T and ±40% from p . Two

model equations are being fitted to u - p - T data.

Future Plans : Calculations will be made to determine C data and other

thermodynamic properties. On the basis of these calculations the

better equation will be selected and best formulations for the

critical regions of water and carbon dioxide will be developed.

12. Title : Critical Evaluation of Vapor-Liquid Equilibrium Data

Principal Investigators : L. N. Canjar and L. S. Kowalczyk

Location": Detroit University, Detroit, Michigan

Date Initiated : 1967

Objective : Tn~e compilation and evaluation of data on vapor-liquid

equilibria for binary systems at low temperatures (below 300°C)

and low pressures (below 2 atm. )

Current Status : A report on the vapor-liquid equilibria of selected

pure substances below 2 atmospheres pressure and below 300°C is in

preparation.

Future Plans : The project is being terminated.

13. Title : Excess Thermodynamic Properties for Liquid

Mixtures of Hydrocarbons

Principal Investigator : B. D. Smith

Location": Washington University, St. Louis, Missouri

Date InTtiated : 1967 (Center also receives support

from a group of industrial organizations)

Objective : The compilation and critical evaluation of data on the excess free energy, excess enthalpy and excess volume of mixing

for selected binary systems.

Current Status : A comprehensive report has been prepared covering the

data for liquid mixtures of hydrocarbons containing 5 to 8 carbon

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atoms. Emphasis has been placed on the internal thermodynamic

consistency of the data.

Future Plans : A start is being made to a critical review of the excess properties of the methanol-water system.

14. Title : Review of Data Near the Critical Points of

Binary Liquid Mixtures and Magnets

Principal Investigator : M. S. Green, G. F. Allan,

F. J. Cook, A. Stein

Location : Temple University, Philadelphia, Pennsylvania

Date Initiated : 1969

Objective : Examination of the data in the vicinity of the critical

points at which immiscible binary liquids become miscible and

ferromagnetic materials become diamagnetic with respect to quality

of measurement and conformity with appropriate scaling- law

equations of states.

Current Status : The similarities between the various types of critical

points have suggested a common nature and a basic underlying

unity. The use of scaling laws has provided a means of expressing

behavior near the critical point with an accuracy and economy of

adjustable parameters previously unobtainable. This, in turn,

makes possible interpolation between data points, correlation of

independent sets of data points and conversion of data from one type to another for correlation.

Two reports have been prepared. One covers the experimental

data for the coexistence curves for the nine binary liquid

mixtures for which extensive data' are available. The other gives

a detailed analysis of the specific heat data for magnetic solids

in the critical region. Scaling law techniques were used to

analyze and correlate the data.

Future Plans : With the completion of the reports mentioned, the

project will have been completed.

15. Title : Physical and Thermodynamic Properties of

Molten Salts

Principal Investigator : G. J. Janz

Location! Molten Salts Data Center, Rensselaer

Polytechnic Institute, Troy, New York

Date Initiated : 1965 (Center also supported by U. S. Air Force)

Objective : The compilation and evaluation of data on thermodynamic,

electrochemical and physical properties of molten salts and their

mixtures.

Current Status : The Center compiles and evaluates data on the

conductivity, density, surface tension and viscosity of fused

salts and on the thermodynamics of some electrode processes. A

report on the properties of binary systems of nitrites, nitrates

and their mixtures has been submitted for publication and is

identified more fully in Appendix III, NSRDS Publications List,

The Center is compiling and evaluating data on the above

properties for binary halide systems. The files of the Center

have been automated and its monthly listings are used to assist in

the preparation of an awareness service put out by Sandia

Corporation.

Future Plans : A report will be prepared on the binary halide mixtures

and the data for other binary systems will be compiled and

evaluated. The files for single-salt melts will be kept up-todate.

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16. Title ; Electrolyte Thermodynamic Data

Principal Investigator ; R. L. Nuttall

Location! Aqueous Electrolyte Data Center, Physical Chemistry

THvision, NBS, Washington, D. C. Date Initiated : 1971

Obj ective ; Tn~e compilation and critical evaluation of thermodynamic

data on aqueous electrolyte systems.

Current Status : The Center has been organized only recently and is

currently in the process of developing the scope of its

operations. One known task will be to cooperate with the Chemical

Thermodynamic Data Group in the evaluation of the standard

enthalpies and entropies of aqueous electrolyte systems. A

publication on the activities of 1:1 electrolyte solutions

resulting from the activities of a previous project in this field

is listed elsewhere in this report.

Future Plans : These will be determined in large measure by a current

planning effort.

17. Title : Complex Stability Constants

Principal Investigator : Y. Marcus and S. A. Kertes

Location! Hebrew University , Jerusalem, Israel

Date Initiated : 1968 (Special Foreign Currency Program fund)

Objective : TKe compilation and critical evaluation of data on the

equilibrium constants for the formation of complexes in

homogeneous and heterogeneous liquid systems.

Current Status : This project is a cooperative project with Commission

V6, the Commission on Equilibrium Data, of the Division of

Analytical Chemistry of the International Union of Pure and

Applied Chemistry. A paper on the equilibrium constants of

liquid- liquid distribution reactions for organophosphorus

extractants (alkylphosphoric acids; alkylphosphonates and

phosphinates , and alkylphosphine oxide) has been prepared and will

be printed by IUPAC.

Future Plans : Work is proceeding on the compilation and evaluation of

data for other classes of organic extractants.

18. Title : Constitution of Binary Alloys

Principal Investigator : R. P. Elliott

Location! Binary Metal and Metalloid Constitution Data

Center, ITT Research Institute, Chicago, Illinois

Date Initiated ; 1967 (Center also supported by AEC

and U. ST Air Force)

Objective : Compilation and critical evaluation of data on phase

equilibria and constitution of binary metallic systems.

Current Status : A comprehensive report on the phase diagrams for

binary alloys, one component of which starts with the letter "a",

is being completed. An extensive automated bibliographic file has

also been developed.

Future Plans : It has become necessary to terminate this project.

19. Title : High Pressure Data

Principal Investigators : H. T. Hall and L. Merrill

Location! High Pressure Data Center, Brigham Young

University, Provo, Utah

Date Initiated : 1965

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Objective : The compilation and evaluation of data on the high pressure

properties of solids.

Current Status : The center has completed a critical review on the

measurement of high pressures which should serve as a source book

for the development of an international pressure scale. Two

indexed bibliographies covering the world's literature in high

pressure research have also been completed. Formal listings of

these three products can be found elsewhere in this report. The

center also produces a current awareness service covering the

world's literature.

Future Plans : A preliminary report on the properties of high pressure

phases has already been prepared and a comprehensive critical

evaluation is in process. The Current Awareness Service will also

be continued.

20. Title : Thermal Conductivity of Selected Materials

Principal Investigator : Y. S. Touloukian

Location": Thermophysical Properties Research Center,

Purdue University, West Lafayette, Indiana

Date Initiated : 1964 (Center receives funds from many

sources, notably U. S. Air Force)

Objective : Compilation and evaluation of data on the thermal

conductivity of the elements and selected solid materials.

Current Status : A comprehensive critical evaluation of the data on the

thermal conductivities of the elements has been completed. All

elements and all phases are included over the temperature range

for which data are available. A condensed version of the

evaluation is being published in the Journal of Physical and

Chemical Reference Data ; the comprehensive evaluation will be

published as a supplementary volume of the Journal. A formal

reference is given elsewhere in this report.

Future Plans : Work has been started on the thermal conductivity of

alloys. Data on electrical conductivity as well as thermal

conductivity will be compiled and evaluated. Data on the

viscosities and heat capacities of a set of industrially important

fluids have also been compiled and may be evaluated. The files on

the thermal conductivity of the elements will be kept up-to-date.

21. Title : Transport Properties of Fluids

Principal Investigator : H. J. M. Hanley

Location : Cryogenics Division, NBS, Boulder, Colorado

Date Initiated : 1968

Objective : Critical evaluation of data on the transport properties of

fluids of cryogenic interest.

Current Status : Techniques for interrelating the transport properties

of a fluid, i.e., the viscosity, thermal conductivity, diffusivity

and thermal diffusivity, with one another and with equilibrium

thermodynamic properties have been developed and refined. The

development of tables of critically evaluated data on a set of

fluids has been started. Tables for fluorine have been completed.

Future Plans : A set of tables for Ar, Kr, Xe,

2 and N, will be

completed in addition to the table for F

2 just mentioned.

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22. Title : Transport Properties of Fluids in the Critical Region

Principal Investigator : J. V. Sengers

Location": Institute of Molecular Physics, University

of Maryland, College Park, Maryland

Date Initiated : 1972 (Center also receives funds

from U. S. Air Force)

Objective : A critical evaluation of data for the transport properties

of fluids in the critical region.

Current Status : This project is in its early stages. New developments

based on scaling law theory are being applied to existing

experimental data in the critical region to assist in the

comparison of data from different experimenters and to interpolate

between sets of measurements. The critical region is of

particular importance, both for equilibrium properties and for

transport properties. Many properties change character

drastically in the vicinity of the critical region and these

changes are of both theoretical and technological importance, the more so as more technological processes approach or span the

critical region. Since critical properties are difficult to

measure, are markedly different from the same properties away from

the critical region, and are used as base points for a variety of

extrapolation and estimation procedures, a critical analysis of

the data on these properties is badly needed.

Future Plans : A critical assessment of thermal conductivity data in

the critical region will be completed.

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B. ATOMIC AND MOLECULAR DATA

The NSRDS program for Atomic and Molecular Data places major emphasis

on two elements. The first element is timely completion of data

compilations on atomic and molecular spectroscopy, collision and ionization

processes and related subjects. NBS staff scientists are deeply involved in

many of these projects. The second element is cooperative development and

application of data standards, evaluation criteria, and compilation planning

for several of the specific fields of molecular spectroscopy. Panels of

outside advisors, including representatives of appropriate professional

societies, are features of these latter efforts, which seek more to

coordinate and assist actual data compilation activities than to operate

them.

In its support of both elements, OSRD follows the priority list which

evolved during two meetings (in 1965 and 1967) of the Advisory Panel on Atomic and Molecular Properties. While the Advisory Panel as a whole has

not met for five years, OSRD has had much valuable counsel from ad hoc

subpanels on a number of special subjects. The two most recently- formed of

these subpanels are concerned with interatomic distances and microwave

spectral data. Other panels focus on infrared and laser Raman spectral data

and data derived from NMR spectroscopy.

The Joint Committee on Atomic and Molecular Physical Data, which was originally formed (with the encouragement of OSRD) to provide a focus for

the participation of professional societies and trade associations in the

compilation of infrared spectra, has expanded its goals to include other

spectral areas. This Joint Committee, in fact, has become an important

channel for the cooperative efforts mentioned above. It provides a valuable

augmentation of the efforts of OSRD through the volunteer services of many

dedicated scientists in government laboratories, private industry and

universities. The Joint Committee has set up subcommittees on each of the

major areas of applied molecular spectroscopy - IR, NMR, Laser-Raman, Mass

and Microwave Spectra, which parallel the NDAB ad hoc Advisory Panels in

interest (and which include many of the same experts) . With modest support

from OSRD for travel and similar expenses, these subcommittees have taken a leading role in the development of criteria for the production of reliable

analytical spectra, and in promoting international acceptance of these

criteria through the Commission on Molecular Structure and Spectroscopy of

the International Union of Pure and Applied Chemistry. A set of

"Recommendations for the Presentation of Raman Spectra for Cataloging and

Documentation in Permanent Data Collections" was approved by IUPAC in July,

19 71. Tentative approval has been achieved for parallel documents on Infrared and NMR Spectra.

The data evaluation projects in this area continue to emphasize atomic

and molecular spectra, collision cross-sections and certain other molecular

properties. In the two-year period since the last status report,

publications have been issued which deal with atomic data derived from

optical spectra, ionization of atoms by electron impact, ultraviolet photoabsorption cross-sections, the absorption spectrum of carbon monoxide,

molecular vibrational frequencies, and the spectrum of molecular oxygen.

While funding limitations have prohibited the start of any major new projects, small efforts have begun on a revision of the fundamental

constants and an exploration of the value of high quality infrared molecular

spectral data. Planning has been completed for a project on interatomic

distances, and compilation work has started at an informal level.

The charter of the standard reference data program recognizes the

appropriateness of support of experimental determination of data to which a particularly high importance is attached. Such "benchmark" data can include

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measurements aimed at either (a) clearing up major discrepancies in keyphysical properties; or (b) providing a reliable value of a quantity to

which a large number of relative measurements can be tied. A project of

this type has been underway for some time on the measurement of the absolute

cross section for excitation of helium by electron impact. This experiment

has been designed to provide a definitive value of the cross section, with a reliable estimate of the limits of systematic error; in addition, it is

expected to lead to criteria for making cross section measurements of other

types. This experiment will be completed in the coming fiscal year.

Active Projects :

1. Title : Precision Measurement and Fundamental Constants

Principal Investigator : Barry N. Taylor

Location! Electricity Division, NBS, Washington, D. C. Date Initiated : 1971

Obj ective : To" provide continuing review and appropriate analysis and

updating of the values for the fundamental physical constants and

their precise measurement. These measurements are ultimately

related to the basic standards maintained by NBS.

Current Status : The status of the fundamental constants is being

reviewed, and a new least-squares adjusted set of recommended

values is being developed for international adoption.

Future Plans : The set of recommended values will be submitted to

CODATA; its official adoption and recommendation for international

use is expected during the next year. A manuscript detailing the

evaluation procedures will be prepared.

2. Title : Atomic Energy Levels Data Center

Principal Investigators : W. C. Martin

Location! Optical Physics Division, NBS, Washington, D. C. Date Initiated : 1966

Objective : Th~e objective is to compile, evaluate and disseminate data

on atomic energy levels and spectra. A literature file is

maintained.

Current Status : An automated system involving punched paper tape and

transfer to magnetic tape for storage is in operation for

bibliographic information. The tape can be reformatted, sorted by

authors for an author index, and can be converted to Linotron tape

for publication. A new bibliography entitled, "Bibliography on Atomic Energy Levels and Spectra, July 1968 through June 19 71,"

NBS Spec. Pub. 363 appeared in June 1972. Additional sections of

NSRDS-NBS 3 "Selected Tables of Atomic Spectra" have been

published by C. M. Sitterly for C I - C VI and N IV - N VII; in

preparation is N I - N III. The tables for II I, D I, and T I will

appear soon. Future Plans : Work on a compilation of the energy levels of the

lanthanide atoms and ions is underway. Another planned

publication is a similar volume covering the actinide elements.

Revised compilations of energy levels for the elements covered in

Vols. 1-3 of Atomic Energy Levels are also planned. Such a revised compilation for the iron spectra Fe I - XXVI is nearing

completion. Also planned are additional sections of NSRDS-NBS 3 for helium, lithium, beryllium, boron and oxygen.

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Title ; Spectroscopy of Two-Electron Atoms

Principal Investigator : C. L. Pekeris

Location": Weizmann Institute of Science, Rehovoth, Israel

Date: Initiated : 1968 (Supported by Special Foreign

Currency Program)

Objective : The objective is to provide very accurate solutions of the

Schroedinger wave equation to give the transition parameters and

term values for two-electron atoms. This will involve the

evaluation of f values for transitions between singlet and triplet

S states and singlet and triplet P states. The results will be

compared with existing values. This work is directly useful to

the compilation activities of the NBS Atomic Energy Levels Data

Center.

Current Status : Two papers have already been published resulting from

this project. They are: , •* , 1) "Fine-Structure of the 2 p, 3 p, and 4 p States of Li+",

B. Schiff, Y. Accad and C. L. Pekeris, Phys. Rev. Al

1837 (1970).

1

, 2) "Low-Energy Photionization for the 1 S and 2 S States of

Helium", Verne Jacobs, Phys. Rev. Al 289 (1971).

Two further papers are under preparation on th~e calculation of

energy levels, f-values, and other properties of selected states

in the heliumisoelectronic sequence up to Z=10.

Title : Calculations of Atomic Spectra of the Transition Groups and

Rare Earth Elements

Principal Investigators : Y. Shadmi and Z. B. Goldschmidt

Locatio"n~: Hebrew University , Jerusalem, Israel

i)ate Initiated : 1968 (Supported by Special Foreign Currency

Program)

Objective : The objective is to calculate spectral energy levels for

the transition groups and rare earth elements and theoretically

predict their spectra. Results are directly useful to both data

compilation and experimental programs at NBS concerning atomic

spectra and energy levels.

Current Status : Theoretical interpretation of many rare-earth spectra

has been developed to the point where it is possible to make

detailed predictions about their structure even in cases where the

experimental material is very poor.

Special results include:

a) extensive analysis of odd and even configurations

of Ce I, with results to be published shortly;

b) theoretical interpretation of several configurations

of Eu I and Gd II (results published)

;

c) similar results ready for publication on Ybl and

Ce II;

d) systematic analysis of magnetic interactions and

inclusion of these interactions in energy level

calculations

.

e) progress in the development and application of

algebraic formulas for the matrix elements for

theoretical interpretation of complex spectra.

Future Plans : Extension of the theoretical interpretation of Ce I spectra, and completion of the work on Gd I, Yb I, Eu I, La II, Ce

II, Gd II, Yb II, Ilf II, Pr III, Er IV.

-21-
5. Title : Description and Analysis of the Spectra of Neutral and

Singly Ionized Erbium and Holmium

Principal Investigator : N. Spector

Location: Soreq •eq Niuclear Research Center, Yavne, Israel

Date Initiated : 1967 (Supported by Special Foreign

Currency.)

Objective : The objective of the project is to measure, describe,

classify and compile the line spectra of neutral and singly

ionized erbium and holmium. The results will be employed in an interpretation of atomic energy levels.

Current Status : The full description of the erbium spectrum in the

photographic region in air has been completed. Two separate

lists, one of Er I and the other of Er II, are available. The

wavelength range covered is 2100A to 12300A. The accuracy of the

measurements is compatible with the requirements for term

analysis, which is still needed in both spectra, and which is now

in progress.

Active work is in progress on the coverage of the holmium

spectra in the photographic infrared. A line list will be

compiled of Ho I and Ho II from 7300A to 1200A, fully separated

into I and II. Associated work on other lanthanides is also being performed,

including calculations on singly ionized samarium and gadolinium

and neutral terbium.

Future Plans : Completion of the description of the holmium spectra and

their subsequent analysis (both to be done in collaboration with

the NBS spectral data project) are first priority.

6. Title : Atomic Transition Probabilities Data Center

Principal Investigator : W. L. Wiese

Location! Optical Physics Division, NBS, Washington, D. C.

Date Initiated : 1960

Objective : TKis center compiles, evaluates and disseminates data on radiative transition probabilities of atoms and atomic ions in the

gas phase. All elements are covered. The literature relevant to

the subject is covered comprehensively, and bibliographies are issued as the content of the literature file warrants.

Current Status : Two critical compilations of atomic transition

probabilities covering the first twenty elements of the periodic

table have been published as NSRDS-NBS 4 and NSRDS-NBS 22. A

critical compilation on Ba I and II was published as NBS Technical

Note 474. A compilation of forbidden transitions of the iron

group is being prepared for publication in the Journal of Physical

and Chemical Reference Dat a. Two bibliographies on transition

probabilities have appeared

Future Plans : Analysis of the literature on transition probabilities

will proceed, and additional tables will be issued, covering

elements of higher atomic number. Additional bibliographies will

be prepared.

7. Title : Data Center on Atomic Line Shapes and Shifts

... Wiese

Lvision, National Bureau of Standards,

Principal Investigator : W. L. Wiese

Location": Optical Physics Dii

Washington, D. C. Date Initiated : 1972

Objective : Th"is center compiles, evaluates, and disseminates data on atomic spectral line shapes and shifts. All elements are covered.

-22-
The literature relevant to the subject is monitored

comprehensively, and bibliographies are issued as the content of

the literature file warrants. Critical reviews and evaluations of

the numerical material are made and are published under the NSRDS

system.

Current Status : The file on the line broadening literature has been

recently completed and contains now more than 1400 articles. A

comprehensive bibliography on atomic line shapes and shifts

covering the literature through March 1972 is in the process of

publication (NBS Special Publication 366).

Future Plans : The literature on atomic line shapes and shifts will be

monitored, and additional bibliographies will be prepared when

sufficient new material is compiled. A critical review on the

present status of hydrogen Stark broadening data is in the

planning stage.

Title: Atomic Collision Cross Section Information Center

Principal Investigator : L. J. Kieffer

Location: Joint Institute _

for Laboratory Astrophysics,

University of Colorado, Boulder, Colorado

Date Initiated : 1963

Ob j ective : To" compile, evaluate and disseminate low energy atomic

collision cross section data needed for modeling low pressure

ionized gases.

Current Status : Annotated bibliographies of papers containing data on measurements or calculations of low energy electron collision

cross sections, photo-absorption and photo-ionization cross sections, electron swarm data, and rate coefficients are maintained on a current basis. A data bank of such data which are needed for the critical review and data compilation projects being

carried out in the Information Center is kept up to date.

Storage, retrieval and manipulation of these bibliographies and

data files are carried out using computers.

Future Plans : Preparation of a series of critical compilations of low

energy electron impact cross sections and electron swarm »

coefficients for all molecular species relevant to aeronomy and

modeling of gas discharges and gas lasers; a critical compilation

of photo-absorption and photo-ionization cross sections for

molecular oxygen; publication of an up-dated version of the

"Bibliography of Low Energy Electron Collision Cross Section

Data."

9. Title : Atomic and Molecular Processes Information Center

Principal Investigator : C. F. Barnett

Location": Oak Ridge National Laboratory, Oak Ridge,

Tennessee

Date Initiated : 1965 (Joint AEC and NBS support)

Ob j ective : Th~e objective is to collect and maintain a literature file

on atomic and molecular collision processes. The abstracted data,

with emphasis on heavy particle-heavy particle collision cross sections, are compiled, evaluated, and disseminated in the form of

critical reviews.

Current Status : One monograph, entitled "Ion-Molecule Reactions," by

McDaniel , Ferguson, Cermak, Friedman and Dalgarno, was published

by John Wiley § Sons, Inc., in 19 70. Two monographs, "Theory of

Change Exchange," by R. A. Mapleton, and "Excitation in Heavy

Particle Collisions," by E. W. Thomas, were published as part of

the same series in 1972. Three other volumes are in various stages

-23-
of preparation and publication.

Future Plans : Formal support for this Center from the National

Standard Reference Data System ceased in June, 19 72. The Center

will continue to maintain its literature file, and the principal

investigator will serve as editor of the monographs which are now being written.

10. Title : Effect of Excitation Upon Atomic Collision Cross Sections

Principal Investigator : J. W. McGowan

Location! University of Western Ontario, London, Ontario, Canada

Date Initiated : 1967 (Advanced Research Projects Agency support)

Objective : TEis project is intended to provide a review of the

quantitative data on the excitation cross sections for collisions

of energetic particles (electrons, protons, etc.) with atoms and

molecules. Emphasis is given to data describing the production

and destruction of long-lived and metastable excited species.

Current Status : The book is being completed following the compilation

and evaluation of the data. Five chapters have been drafted and a final report has been submitted to the Office of Standard

Reference Data covering the chapters written by the principal

investigator.

Future Plans : The monograph will be completed (several co-authors are still preparing their contributions) and published.

11. Title : Compilation and Verification of X-ray Wavelengths

Principal Investigator : J. A. Bearden

Location! Johns Hopkins University, Baltimore, Maryland

Date Initiated : 1966 (NSF support for experimental aspects)

Objective : TKe objective of this project is to remeasure the

wavelength ratios between the W Ka x-ray standard and four

important secondary standard lines and to place these wavelengths

on a more accurate absolute basis through a ruled grating

measurement of the Al Ka doublet.

Current Status : Tabulations of selected x-ray wavelengths and a reevaluation of x-ray energy levels have been published. The

remeasurements have also been completed. A critical monograph

entitled "High Precision X-ray Spectroscopy" containing the stateof-the-art in the field and a compilation of x-ray wavelengths and

atomic energy levels has been written and submitted to the Office

of Standard Reference Data.

Future Plans : The text of the report will be published as a chapter of

the forthcoming book "X-Ray Spectroscopy," edited by Leonard

Azaroff

12. Title : X-Ray Attenuation Coefficient Information Center

Principal Investigator : J. H. Hubbell

Location! Center for Radiation Research, NBS , Washington, D. C. Date Initiated : 1964

Obj ective : TTTe objective is to compile and evaluate data on attenuation coefficients for high energy photon (1 keV-100 GeV x- rays and gamma rays) interaction with matter including Compton and

Rayleigh scattering, atomic photo-effect and electron-positron

pair production. A literature reference file on these data, now encompassing the energy range 10 eV to 13.5 GeV, is maintained.

-24-
Current Status : A critical monograph, entitled "Photon Cross Sections,

Attenuation Coefficients and Energy Absorption Coefficients from

10 keV to 100 GeV," has been published as NSRDS-NBS 29. Ten

additional contributions by the principal investigator, all

dealing with data aspects of photon interactions, have been

published elsewhere. Four other related publications by other

authors have appeared with acknowledgement of NSRDS support for

their contents via this center.

Future Plans : The basic objectives of the Center will be pursued. The

data now covering 23 elements and 13 other substances will be

extended to cover 100 elements. The energy range will be extended

below 1 keV.

13. Title : Diatomic Molecule Spectral Data Center

Principal Investigator : P. II. Krupenie

Location": Optical Physics Division, NBS , Washington, D. C. Date Initiated : 1967

Objective : To compile tables and evaluate data, e.g., bandheads,

spectral frequencies, molecular energy levels and parameters, and

dissociation energies. All pertinent regions of the electromagnetic spectrum are covered.

Current Status : Critical reviews have been published on CO (NSRDS-NBS5 J and ? (in the Journal of Physical and Chemical Reference Data , Vol. 1, No. 2).

Future Plans : A similar review on N

2 will be completed.

14. Title : Microwave Spectral Data Center

Principal Investigator : F. J. Lovas

Location": Optical Physics Division, NBS, Washington, D. C. Date Initiated : 1970

Objective : TTTe objective of this project is to provide a continuing

data center for the collection, critical evaluation and

dissemination of microwave spectral data for gases. A literature

file dating from 1960 is maintained.

Current Status : The spectra of 50 compounds consisting of more than

3000 reported transitions have been evaluated and transferred to

punched cards for subsequent storage in the computer.

Very thorough reviews (including some remeasurements and

recalculations) have been completed for four of the molecules

discovered in recent radiotelescope observations of the

interstellar medium. These reviews, on formaldehyde, formamide,

methanol and thioformaldehyde, have been circulated in preprint

form and are currently in press.

Future Plans : The evaluation, computer storage and computer-controlled

printing process will be tested on a small number of molecules

exhibiting all anticipated complications in spectral splittings,

spectral assignments; and molecular parameters. Evaluation of

spectral data will be continued, first for diatomic and triatomic

molecules and later for larger molecules, leading to publication

of tables of microwave spectra in a format similar to NBS

Monograph 70.

15. Title : Criteria for and Issuance of Evaluated Infrared Spectra

Principal Investigator : Coblentz Society Inc.,

R. P. Bauman, President

Location : 761 Main Ave., Norwalk, Connecticut

-25-
Date Initiated : 1965

Objective : TKe Board of Management advises the Office of Standard

Reference Data on criteria for the production of high quality

infrared spectra. Once the criteria are established, it is to aid

in the publication of evaluated infrared spectra.

Current Status : Criteria have been established and published by the

Coblentz Society Board of Management and accepted by the Office of

Standard Reference Data. These criteria have also been accepted

and endorsed in a slightly modified form by IUPAC. With the

completion of this phase of the work, the Coblentz Society has

undertaken to apply these criteria in the preparation and

publication of its own infrared spectral data collection. Four

sets, totalling 4000 spectra of Class II and Class III quality,

have been published. This work is done without financial support

from OSRD.

Future Plans : This project has been formally terminated, although the

selection and publication of spectra continues.

16. Title : Specifications for Evaluation of Spectroscopic Data

Principal Investigator : Joint Committee on Atomic and Molecular

Physical Data, A. Lee Smith, Chairman

Location : Spectroscopy Laboratory, Dow Corning Corp., Midland,

Michigan

Date Initiated : 1971

Objective : To provide a coordinated and cooperative approach to the

development of evaluation of various types of atomic and molecular

spectroscopic data.

Current Status : Criteria and specifications have been defined and

accepted for infrared, NMR and Raman spectral data. Tentative

criteria have been prepared for microwave spectral data.

Future Plans : Efforts will be made to further the general adoption and

application of criteria already prepared. Final approval will be

sought for criteria for microwave spectral data. Studies will be

made of needs for criteria for mass spectral data and ultraviolet

and visible spectral data.

17. Title : Infrared Bibliography

Principal Investigator : C. N. R. Rao

Location! Indian Institute of Technology, Kanpur, India

Date Initiated : 1969 (Special Foreign Currency Program fund)

Obj ective : ThTe objective of this project is to prepare bibliographies

on infrared spectroscopy. Using the NRC-NBS Spectral Data File as

a base, the effort will search and compile references from 1960 to

the present. The material will be indexed by compound including

the empirical formula.

Current Status : The text of the completed bibliography is being typed

for publication.

Future Plans : The current phase of this undertaking will be completed

when the bibliography is published. Future phases will be

considered at that time.

18. Title : Data Center for Atomic and Molecular Ionization

Processes

Principal Investigator : II. M. Rosenstock

Location : Physical Chemistry Division, NBS, Washington, D. C. Date Initiated : 1966

-26-
Objective : The objective is to collect and maintain a literature file

from which data on ionization and appearance potentials can be

compiled, evaluated, and disseminated.

Current Status : A critical monograph, entitled "Ionization Potentials,

Appearance Potentials and Heats of Formation of Gaseous Positive

Ions," NSRDS-NBS 26, has been issued. Since that publication, the

Center has accumulated an archive of more than 2000 documents

concerning approximately 5000 different ions. This material is

being used in the preparation of a revision of NSRDS-NBS 26,

planned for completion toward the end of 1972. The new compilation will be two to three times the size of the original.

Future Plans : When the revised compilation is completed, the Center

will continue its coverage of the literature, with modifications

of output and services to be determined by needs of the technical

user community.

-27-
C. CHEMICAL KINETICS

The program in Chemical Kinetics continues to emphasize critical

reviews of rate constant data on gas phase reactions. The continued need

for rate data on atmospheric reactions, important to the solution of air

pollution problems, was endorsed at an ad hoc meeting of the NAS-NRC

Kinetics Panel in Los Angeles in 1971. Subsequent review of the program by

the OSRD Evaluation Panel of the National Academy of Sciences has emphasized

the similar importance of chemical kinetics data to other NBS program areas,

such as fire research and water pollution studies. Current development of

the OSRD kinetics program is influenced by expressions of need for data in

these areas.

In the past two years, the two Kinetics Data Centers at NBS and the

University of Notre Dame have continued to improve their data handling

capabilities, and to move toward greater compatibility and sharing of data resources. They now exchange computer tapes containing bibliographic

references which they enter in their files. They have issued computer

generated bibliographies on selected topics. The Radiation Chemistry Center

now publishes a semi-annual index to its weekly current awareness bulletin.

Manuscripts of critical reviews in radiation chemistry are also being

produced on computer tape for direct phototypesetting and printing.

Finally, two projects dealing with solution kinetics have been initiated.

The Chemical Kinetics Information Center has issued two reports on evaluated

rate constants of air pollution reactions and will soon issue evaluated data

sheets on the molecules found to be important in studies of air pollution.

Other critical reviews are nearing completion and will be published. A

proposed review on Dissociation-Recombination Reaction Rate Constants of H

2

, N~, NO, UNO and NO- will not be published since the data which were to have

been examined in this review have recently appeared in evaluative reviews by

Baulch and others.

The program has also increased its role internationally.

Representatives of the OSRD and the Chemical Kinetics Information Center are active participants in a CODATA Task Group on Chemical Kinetics which meets

regularly. Recent meetings have been held in Paris (May, 1971) and Le

Creusot (June, 1972), and a report has been prepared for CODATA by Dr. David

Garvin of the NBS Chemical Kinetics Information Center on "Compilation and

Data Evaluation Activities in Chemical Kinetics, Photo Chemistry and

Radiation Chemistry." The OSRD cooperates actively in exchange of

information with its counterparts in the U.K. (OSTI) and the U.S.S.R. A

Russian compilation on "Rate Constants of Gas Phase Reactions," by V.N.

Kondratiev, has been translated and distributed through the National

Technical Information Service.

Active Projects:

1. Title : Chemical Kinetics Information Center

Principal Investigator : David Garvin

Locatio"n~: Physical Chemistry Division, National Bureau of

Standards, Washington, D. C. Date Initiated : 1964 (This project is partially supported by

Navy Material Command and the Department of

Transportation)

Objective : The objective of this project is to collect and maintain an automated literature reference file on kinetic rate data for

-28-
reactions in the gas, liquid, and solid phases. Rate data for

selected reactions are compiled, evaluated and published.

Current Status : The number of papers indexed and on file at the Center

has reached approximately 24,000. Two bibliographies on the

reaction kinetics of sulfur atoms and compounds with H, 0, 0_,

" 0, and the nitrogen oxides have been issued. In addition, nine

snort bibliographies on specialized topics (e.g., the combination

of radicals in gas phase) have also been issued. A world-wide

survey of compilation and evaluation activities in kinetics was prepared for publication in the CODATA Bulletin.

Future Plans : The activity of the Center will continue in accordance

with its stated objective.

Title : Radiation Chemistry Data Center

Principal Investigator : Alberta Ross

Location": Radiation Laboratory, University of Notre Dame,

Notre Dame, Indiana

Date Initiated : 1966 (Cosponsored by AEC)

Objective : Tn"e project will develop an automated literature reference

file pertinent to radiation chemistry. The Center will compile,

evaluate and disseminate reviews on selected topics dealing with

radiation chemical data.

Current Status : In addition to a searchable file of over 4,000 papers,

the issuance of the weekly bulletin and some bibliographies, the

Center has helped prepare five data compilations as input to

critical reviews. Three of these are in final stage of

publication and have been prepared using computer tape for direct

photo typesetting.

Future Plans : Three critical reviews dealing with the radiation

chemistry of gaseous ammonia, the solvated electron in alcohols

and the hydrated electron will be published in the NSRDS-NBS

series. The other activities of the Center will also continue.

Title : Reactions of the Hydroxyl Radical in Water

Principal Investigators : L. M. Dorfman and G. E. Adams

Location! Ohio State University, Columbus, Ohio

Date Initiated : 1969

Objective : A~~monograph is to be written giving a critical evaluation

of absolute and relative reaction rate constants for OH radical

interactions with various compounds in water. The reactions will

cover organic addition, hydrogen abstraction, electron transfer,

radical-radical reactions and, for comparison, selected 0"

reactions. Optical absorption, acid dissociation constants, and

other properties will also be discussed.

Current Status : A final manuscript has been submitted by the authors

and is undergoing review.

Future Plans : The manuscript will be published in the NSRDS-NBS

series.

Title : Evaluation of Selected Dissociation and Recombination

Reaction Rate Constants in Gas Phase

Principal Investigator : K. Schofield

Location": Delco Electronic Laboratories, Goleta, California

Date Initiated : 1970

Obj ective : Th"e study calls for an evaluation of available gas phase

reaction rate data of important dissociation-recombination

-29-
reactions which pertain to the lower atmosphere. They include

reactions involving the molecules CO, S0

2

, SO,, tiLS, NH,, CH.,

C,H,, NO, N0 7

, N 7 0, N 7 0. and the atoms and radicals II, 0, SO, HS,

NH 7 ° CH

3 and^C2 in.

Current Status : A manuscript has been reviewed and is now in its final

stages of revision prior to publication.

Future Plans : The revised manuscript will be published in the Journal

of Physical and Chemical Reference Data .

5. Title : Solvent Effects in Solution Kinetics

Principal Investigator : R. Parlin

Location! University of Maryland, College Park, Maryland

Date Initiated : 1971

Objective : A"n annotated bibliography is to be prepared on solvent

effects on reaction rates in solution.

Current Status : This project was originally undertaken by Dr. G.

Akerlof (deceased) who planned a critical monograph on the

subject. The work was halted by his death. The present author

plans to use some of the material compiled by Dr. Akerlof. A

format has been evolved and the annotation is in preparation.

Future Plans : The final publication will be delayed due to the

author's illness.

6. Title : Atom and Radical Abstraction Reactions With Organic

Substrates in Liquid Phase

Principal Investigators : Dale G. Hendry and T. Mill

Location : Stanford Research Institute, Menlo Park, California

Date Initiated : 1972

Objective : Selected atom and radical abstraction reactions with

organic substrates in liquid phase will be compiled. The data

will be evaluated for inclusion in a critical review.

Current Status : The reactions to be compiled and reviewed will include

C1 » alkyl (C, - C,), alkoxy and alkylperoxy radicals. Best values

for the rate constants will be selected wherever possible. The

project has just been initiated.

Future Plans : The review material on CI atom reactions will be

compiled from the literature and the data evaluated.

Title : Air Pollution Data Handbook

Principal Investigators : R. F. Hampson and D. Garvin

Location"! Physical Chemistry Division, National Bureau of

Standards, Washington, D. C.

Date Initiated : 1971

Objective : D"a"ta sheets on the basic physical and chemical properties

of a number of gaseous air pollutants are to be prepared. The

evaluated data are required in the solution of air pollution

problems.

Current Status : A number of consultants primarily within NBS have

collected and evaluated thermochemical, spectroscopic and kinetic

rate data for seven molecules found important in air pollution.

They are 0, 0,, C 7 H., CO, CO-, NO, and SO,. In addition, two NBS

reports reviewing tne chemical kinetic rate data of 27 reactions

of interest in the stratosphere have been released.

Future Plans : The data sheets for the seven species mentioned above

will be published. The data for other species will be evaluated

and published.

-30-
D. SOLID STATE

The Solid State program has grown slowly over the past two years with

continued emphasis on the issuance of "Crystal Data Determinative Tables."

This latter effort is now in its final stage of completion. Arrangements

with the NBS and Cambridge Crystal Data Centers have been finalized for

continuing the cooperative production of an updated single crystal data

file. The contents of the file would be published at suitable intervals.

Activities in other solid state areas have produced a number of

publications. Following the advice of the Ad Hoc Panel on Mossbauer Effect

the OSRD has supported the publication of the 1970 Mossbauer Effect Data

Index (MEDI). Two new bibliographies describing the computerized file of

the Alloy Data Center have been published. The Center is also completing

two evaluated data reviews on Knight Shift and Soft X-Ray Spectroscopy. The

Superconductivity Center has updated its compilation of data on superconductive materials and these will soon be published. A critical

review of diffusion data in copper and copper, alloys is now being written by

the Diffusion in Metals Data Center. A bibliography on the Properties of

Defect Centers on Alkali Halides and a critical review of Phase

Transformation Properties in Alkali Halides have also been published. An

evaluative effort on the elastic constants of iron-nickel alloys is in

progress. The review on energy gaps has been superseded by a recent

compilation of band gap data on binary compounds carried out by Dr. W. H. Strehlow of the Minnesota Mining and Manufacturing Co. His compilation will

be- published by the OSRD.

An Ad Hoc Panel on Electrical Properties of Solids was convened to

review the state of the field and provide advice on the needs for data

evaluation and compilation on electrical properties. The panel recommended

critical reviews on refractive index, dielectric constants and energy band

structure of the important materials. The panel noted that it was important

to relate OSRD compilation priorities to the growth rate of certain fields,

e.g., superconductivity, and to stimulate data efforts on the part of other

organizations wherever and whenever possible. The OSRD has responded to

these directives by exchanging information on data gathering activities with

such organizations as Electronic Properties Information Center (EPIC) in

California and the Research Materials Information Center at Oak Ridge. This

cooperation led to the identification of an independent compilation effort

by the 3M Company on the energy band gaps of binary compounds. This

document is now scheduled for publication by the OSRD. Similar cooperative

efforts are being sought.

Active Projects :

1. Title : Single Crystal Data Center

Principal Investigator : H. M. Ondik

Location": Inorganic Materials Division, National Bureau of

Standards, Washington, D. C.

Date Initiated : 1964

Objective : To compile, evaluate and publish selected crystallographic

properties of single crystals. An information file to the data is

also maintained.

Current Status : The first volume (Organic) of the 3rd edition of

Crystal Data has been delivered to the publisher for printing.

The second volume (Inorganic) is being completed. A cooperative

arrangement between the Center and the Cambridge University

-31-
Crystallographic Data Centre has been concluded for handling

future data compilation and evaluation of single crystals.

Future Plans : The 3rd edition of "Crystal Data" will be published.

The Data Center will continue to compile and evaluate single

crystal data in the new mode.

2. Title : Cambridge Crystallographic Data Centre

Principal Investigator : 0. Kennard

Location! University of Cambridge, Cambridge, England

Date Initiated : 1964

Objective : Compiling and evaluating single crystal data for organic

compounds. An active data file of the selected properties will be

maintained. The Centre will cooperate actively with the NBS

Single Crystal Data Center in the publication of evaluated single

crystal data.

Current Status : The literature has been searched and papers on inorganic and intermetallic compounds and minerals have been sent

to the NBS Single Crystal Data Center. About 1,600 organic

compound data abstracts have been prepared and entered into an automated file.

Future Plans : The Centre will continue its present activities. A

feasibility study is being initiated in the use of an optical

character reader device for bibliographic data input.

3. Title : Alloy Data Center

Principal Investigator : G. C. Carter

Location": Metallurgy Division, National Bureau of Standards,

Washington, D. C. Date Initiated : 1966

Objective : TEe primary objective is to maintain an automated file of

literature on the properties of alloys, with particular emphasis

on Knight shifts and soft X-ray data. Critical evaluations are carried out in these two areas. Current Status : The automated literature reference file has been

improved and continually updated. Two bibliographies listing the

file holdings, both by material and by author, have been issued.

Two critical reviews on "Metallic Shifts in NMR" and "Soft X-ray

Emission Spectroscopy" are in varying stages of completion.

Future Plans : A bibliography on hyperfine fields in metals and alloys

is planned. The activities of the data center will continue. The

two critical evaluations will be published.

4. Title : Diffusion in Metals Data Center

Principal Investigator : J. R. Manning

Locationl Metallurgy Division, National Bureau of Standards,

Washington, D. C.

Date Initiated : 1964

Objective": TEe objective is to collect and maintain a literature

reference file on diffusion data in metals and alloys. The data

are to be compiled, evaluated, and issued as a series of

monographs covering pure metals and binary alloys.

Current Status : This activity has been accelerated and boasts a reference file of 8,600 papers on diffusion data in metals and

alloys. A monograph of critically evaluated diffusion data for

copper and copper alloys is now being written.

-32-
Future Plans : The monograph on the copper will be completed and

published. Desirability of automating the bibliographic file is

being evaluated.

Title : Superconductive Materials Data Center

J. W. Roberts

lc Research and Development Center,

Principal Investigator : B. W. Roberts

Location: General Electric

Schenectady, New York

Date Initiated : 1965

Objective : TKe objective is to maintain a data set on superconductive

materials which is evaluated and arranged for dissemination. Data

include transition temperatures, critical field strengths, and

crystal structure.

Current Status : A third manuscript of superconductive properties data

is now in publication. It will be published as NBS Technical Note

724.

Future Plans : A critical evaluation of all the data will be initiated.

The compilation and publication of new data will continue.

Title : Compilation of Thermal Expansion Data

Principal Investigator : R. K. Kirby

Location"! Inorganic Materials Division, National Bureau of

Standards , Washington, D. C. Date Initiated : 1970

Objective : TKe objective of this project is to compile and analyze the

data on the thermal expansion of the elements in the solid state.

The principal investigator will cooperate with the Thermophysical

Properties Research Center (TPRC) at Purdue University, which will

furnish bibliographic assistance and other data information, so that a selection of recommended values of linear expansion and

expansivity can be made.

Current Status : The desired format for exchanging information between

groups has been achieved. The analysis of data for five elements

is in progress.

Future Plans : Tabulation and evaluation of thermal expansion data will

continue.

Title : Compilation of Static Dielectric Constants

Principal Investigator : K. F. Young

Location": Inorganic Materials Division, National Bureau of

Standards , Washington, D. C. Date Initiated : 1970

Objective : TKe objective of this project is to provide enlarged and

improved on the static dielectric constants of selected inorganic

materials. The information listed, when available, will include

the effect of temperature, pressure, and frequency on the

constant. Data on e" or tan 6 (losses) will be included.

Current Status : Data for over a hundred dielectric materials have been

tabulated and evaluated. A critical review is now being written.

Future Plans : The review will be completed and published, probably in

the American Institute of Physics Handbook of Physics .

-33-
8. Title ; Compilation on Defect Properties of Non-Metallic Crystals

Principal Investigator ; S. C. Jain

Location ; Originally at the Indian Institute of Technology, now at

Solidstate Physics Laboratory, New Delhi, India

Date Initiated ; 1967 (Supported by the Special Foreign

Currency Program)

Objective ; The objective of this project is to compile and evaluate

the properties of defects in non-metallic crystals. The

properties to be covered are the optical properties and energy

levels of ions and molecules in crystals; energies of formation,

migration, solution, and association of point defects in crystals;

colloidal and surface properties in crystals.

Current Status ; A bibliography on impurity center properties in alkali

halides has been published as OSRDB 71-1. A critical review of

the optical properties of defects in alkali halides is being

written.

Future Plans ; The critical review will be published.

9. Title ; Compilation of Data on Phase Transformations in Solids

Principal Investigator ; C. N. R. Rao

Locationl Indian Institute of Technology, Kanpur, India

Date Initiated ; 1969 (Supported by the Special

Currency Program)

Objective ; This project will survey the literature on phase

transformation in solids with a view toward preparing

bibliographies and compilations of evaluated data. In addition to

transition temperatures, other important and related thermodynamic

and kinetic parameters will be given. The reviews will be limited

to simple inorganic compounds such as chlorides, cyanides,

sulfates, nitrates, chlorates, phosphates and oxides.

Current Status ; A critical review of data on phase transformations in

binary halides has been completed and will be issued as NSRDS-NBS

41. Another review on the metal oxides is being written.

Future Plans ; The review on the metal oxides will be completed and

published. Other reviews will be initiated.

10. Title ; Compilation of Elastic Constant Data for Metals and Alloys

Principal Investigator ; II. M. Ledbetter

Locationl Cryogenics Division, National Bureau of Standards,

Bouler, Colorado

Date Initiated ; 1971

Objective : TKe elastic constant data for metals and alloys of

technological importance will be compiled and evaluated. All

variables for both single crystal and "bulk" constants will be

examined.

Current Status : The constants of iron-nickel alloys have been chosen

for review. The data have been compiled and evaluated and the

manuscript is now in draft stage.

Future Plans : Elastic constant data for other materials will be

reviewed.

-34-
E. NUCLEAR DATA

The U. S. Atomic Energy Commission has recently established a U. S. Nuclear Data Committee (USNDC) to serve as an informal advisory group to its

Physical Research Division. The charter for the USNDC calls upon it to

provide advice and recommendations on data compilation activities to the

Office of Standard Reference Data, as well as to the Atomic Energy

Commission. The Chief of the Office of Standard Reference Data attends

relevant meetings of the USNDC and a physicist from the NBS Center for

Radiation Research serves as a member of the committee.

Joint sponsorship of nuclear data projects by the OSRD with the AEC now includes the Table of Isotopes Group in Berkeley, California. This group is

cooperating actively with the Nuclear Data Group at Oak Ridge National

Laboratory in compiling, updating and indexing nuclear property data. The

final aim is a computerized file which can be used as a basis for publishing

an updated version of the "Table of Isotopes." International cooperation

with groups in Russia (Leningrad) and with the International Atomic Energy

Agency in Vienna is also taking place.

Several ongoing projects continue their progress. The Center has

issued four publications. The Photonuclear Data Center is initiating an evaluative effort, and work on the updating of "Tables of Nuclear Spins and

Moments" is nearing completion. Similarly, a compilation of data on "Lifetime of Nuclear States" is nearing completion.

Active Projects :

1. Title ; Photonuclear Data Center

Principal Investigator : E. G. Fuller

Location": Linac Radiation Division, National Bureau of Standards,

Washington, D. C. Date Initiated : 1963

Obj ective : To maintain files of references and data on the

interactions of high energy electromagnetic radiation with nuclei;

to compile and evaluate cross sections and other data on selected

nuclei

.

Current Status : New techniques for improving the computerized data

file have been introduced. The files have been expanded to

include data in over 350 graphical displays. A third supplement

to the photonuclear data index is being produced.

Future Plans : The third supplement to the photonuclear data index will

be completed. An effort to evaluate and publish photonuclear

cross section data has been initiated.

2. Title : Fundamental Particle Data Center

Principal Investigator : A. U. Rosenfeld

Location! Lawrence Radiation Laboratory, University of California,

Berkeley, California

Date Initiated : 1969 (Particle Data Group has been in

operation since 1958) (Cosponsorship by AEC)

Obj ective : To compile and evaluate data on particle properties and

cross sections for particle reactions.

Current Status : In addition to issuing the annual data reports on particle properties, a compilation of cross sections and angular

-35-
distributions is in progress. The Center plans to issue current

lists of experiments being conducted at accelerator sites. Tapes

of Data on Stable Two Body (S2) and Quasi Two Body (02)

interactions have been acquired. A compilation of Inclusive

Reactions is nearly complete. A compilation of NN and ND

Reactions has been issued.

Future Plans : The Center will complete and publish the various

compilations now in progress.

Title

Table of Isotopes Project

Principal Investigator : J. Location": Lawrence Radiati

Berkeley, California

Date Initiated : 1970 (Spon

Obj ective : TEe "Table of I required. The data wi

for easy handling and

compilations

Current Status : The projec

evaluation. Approxima

cooperative literature

Oak Ridge.

Future Plans : The group wi

data. It will evaluat

H. Hollander

on Laboratory, University of California,

sored by AEC and OSRD)

sotopes" data will be revised and updated as 11 be entered into a computerized data file

for use in the production of subsidiary data

t is proceeding with data compilation and

tely 25 mass numbers have been reviewed. A

searching technique lias been achieved with

11 establish a computerized file of the

e an additional body of mass numbers.

Title : Nuclear Spins and Moments Project

Principal Investigator : G. Fuller

Locatio"n~: 9016 Honeybee Lane, Bethesda, Maryland

Date Initiated : 1970

Obj ective : TTTe tables on nuclear spins and moments which appeared in

Nuclear Data Tables A5 Nos . 5-6 (1969) are to be updated.

Current Status : The updating and revision of several tabular sections

have been completed. A draft of the final manuscript is being

written.

Future Plans : The tables will be completed and published.

Title : Lifetimes of Nuclear States Project

Principal Investigator : G. N. Rao

Location": Indian Institute of Technology, Kanpur, India

Date InTtiated : 1970 (Supported by the Special Foreign

Currency Program)

Objective : This project will compile and evaluate hyperfine fields and

the magnetic properties of nuclear states and lifetimes. It will

also examine related angular correlation data of species resulting

from a variety of nuclear reactions.

Current Status : The compilation on nuclear lifetime data has been

reviewed as a final draft. A manuscript on hyperfine field data

is in preparation.

Future Plans : Both manuscripts will be completed and published.

-36-
F. COLLOID AND SURFACE PROPERTIES

Three publications have resulted from projects in this area in the

period since the last status report: NSRDS-NBS 36 on critical micelle

concentrations, and two papers on critical supersaturation and evaporation

coefficients in Vol. 1, No. 1, of the Journal of Physical and Chemical

Reference Data . In addition a monograph on surFace tensions has been

scheduled for early publication in the Journal and two additional critical

reviews are themselves in the review process. Because of budget limitations

it has not been possible to initiate new data compilation projects.

However, OSRD continues active planning and consultation with advisors in

this important technical area.

Active Projects :

1. Title : Properties of Importance in Phase Transformation Kinetics

Principal Investigator : G. M. Pound

Location : Stanford University, Palo Alto, California

Date Initiated : 1967

Objective : Th~e critical review of several properties of importance in

the study of phase transformation kinetics including coefficients

of evaporation and condensation of liquids and solids, critical

supersaturation for homogeneous and heterogeneous nucleation, and

slopes of liquidus lines on phase diagrams.

Current Status : Two papers, one on critical supersaturation for

nucleation of liquids and one on evaporation and condensation

coefficients have been published and formal references are present

elsewhere in this report. Two other reports are in the review

process.

Future Plans : Studies on critical supersaturations for nucleation on a substrate and for equilibrium distribution coefficients in alloys

are in their latter stages. Work is also proceeding on evaluation

of specific surface free energies for solid surfaces. With the

completion of these topics the project will come to a close.

2. Title : Electrochemical Properties of Interfaces

Principal Investigator : J. Lyklema

Locationl Agricultural University, Wageningen, The Netherlands

Date Initiated : 1965

Objective : TKe compilation and evaluation of data on such properties

as double layer charge and capacity, electrocapillary curves,

electrokinetics, surface conduction and points of zero charge.

Current Status : A comprehensive compilation of the data from the

literature on the properties listed above has been completed. The

critical evaluation of this is well along and a final report is

being prepared.

Future Plans : With the submission of the final report this project

will be completed.

-37-
G. MECHANICAL PROPERTIES

In 1964 an ad hoc NBS panel drafted a list of mechanical properties

which seemed likely candidates for inclusion in the NSRDS Program.

Financial limitations have precluded the initiation of any systematic

program in this area, and further formal planning was postponed for several

years. Although funds for a major effort are still not available, it is

believed that a start on a modest program can be made within the next year

or two, and work to develop a detailed plan for this area is again underway.

The planning effort started with a review of the 1964 list, involving

discussions with a number of materials research specialists to determine

which properties were well enough defined to warrant consideration. This

review yielded tentative lists of properties for metals, ceramics, glasses,

polymers, and liquids (gases are included in the Thermodynamics and

Transport Properties area) , which were then circulated to a larger group

including users and producers.

The comments and suggestions of this larger group, about eighty

individuals, have been received, and the formulation of a detailed program

which tries to meet the varied needs expressed has been started, beginning

with metals. We mention here only a few points on which there is a general

consensus, and a few others on which there is some disagreement.

We should develop a program whose output will be useful to all who need

and use mechanical properties data—including scientists, engineers, and

designers. jiut we should not include material of only transitory interest,

nor duplicate without some very good reason the information being produced

by others, "We should try to emphasize base or key values, but in some cases

it is not yet clear which properties and materials are implied by this

requirement.

There is little disagreement that we must adopt a somewhat pragmatic

approacii in interpreting "well defined properties" which express many kinds

of mechanical behavior. In many cases the properties used to express

important aspects of mechanical behavior are valid only within certain

limits on the type or rate of deformation, the sample size, or other aspects

of the test involved.

Often the most important information about the mechanical behavior of a material is given by quantities like a glass transition temperature, or an activation energy, or by structural information like the slip, twinning, and

fracture systems for a given material. Such information should be included

with the direct mechanical properties as appropriate for various materials.

Outside of the categories of single crystals and ordinary (low

molecular weight) liquids, the major limitation on reproducibility of the

values of most mechanical properties seems to be our ability to characterize

the materials. This is true even when we include, as we must at present,

details of sample history (thermal and mechanical) in addition to

composition and the structural parameters we can now define, measure and

use.

It is clear that critical reviews will play a large part in the

mechanical properties program. A number of the comments suggested including

also papers designed primarily to describe the use of relatively new material properties (like plane strain fracture toughness). We believe that

the NSRDS Program should continue to emphasize data, with whatever textual

material is needed to explain its significance and limitations, but stopping

short of papers primarily of a tutorial nature.

-38-
A number of objections were made to our initial suggestion that the

materials covered be limited to relatively simple systems. Most (though not

all) of those interested in metals, for example, maintain that commercial

alloys should be included, despite the inherent variability of such

materials due to the range in composition and details of production accepted

in practice. Typical values and ranges for many properties of such alloys

are given in various handbooks, publications by ASTM and other societies,

and data sheets or handbooks compiled by producers. Also, several

organizations can provide additional information in response to specific

requests and prepare special compilations from time to time. The needs

expressed seem to reflect in varying degrees the difficulty of finding

desired information scattered through many diverse sources and an uncertainty about the reliability of the values quoted.

We are exploring the question of whether, and if so how, the NSRDS

Program should complement the varied activities and the existing references

mentioned above. It may be that an annotated list of information sources would be useful, since present lists generally do. not identify in a specific

fashion the information available from each source.

The properties which give rise to the questions noted above are primarily those describing nonlinear, plastic, or ultimate (strength,

fracture, etc.) behavior. A number of other, well defined, material

properties have been identified, including elastic constants and moduli, and

the activation energies, transition temperatures, etc. mentioned earlier.

There is reasonable agreement on which properties of this type should be

included for metals, ceramics, and simple liquids; for polymers the replies

indicate a substantial question about the reliability of available data, and

the timeliness of any extensive program coverage of these materials is not

yet clear.

-39-
III. DATA SYSTEMS DESIGN ACTIVITIES

The Data Systems Design Group is engaged in computer programming,

systems design, and application. The present activities include the design

and application of a number of general-purpose computer programs for:

storage and retrieval, for file manipulation, and for computer-assisted text

preparation, editing and printing. In the latter area, the Group is working

in close collaboration with the Electronic Printing Section of the NBS

Office of Technical Information and Publications in devising a variety of

computer-based systems for more effective use of the Electronic Composing

System at the Government Printing Office.

The work in this area includes four main activities:

(a) Development of general-purpose computer programs required for

the generation and updating of data files and the preparation

of publications therefrom.

(b) The design of computer-based data files and the retrieval

systems to make them accessible to as wide a segment of the

technical community as is economically possible.

(c) Consultation and advisory services to the data centers

adhering to the NSRDS System.

(d) Source automation of technical manuscripts.

The specific projects described below each involve one or more of these main

activities. Among the projects in which the Data Systems Design Group is

engaged or is promoting are the following:

(1) Computer- Ass is ted Text Editing and File Manipulation . The writing of general-purpose programs is continuing with the purpose

of developing a system of compatible programs which will exploit the

capabilities of the newest computer configurations. The programs and the

subroutines they require are being written in ANSI Standard FORTRAN IV. The

use of a standard FORTRAN and other self-imposed restraints will make it

easier to use the programs on a variety of machines.

The first two releases: NBS Tech. Note 444-' and Tech. Note 470-',

containing the programs SUBSTITUTE and REFORM, have proven to be the "work

horses" in a number of larger typesetting programs in daily production. The

basic concepts in these two programs have been used with various

modifications in two other programs, COMBO and SETAB, which are described in

detail below.

A/lcClenon, R. C, and Hilsenrath, J., REFORM : A General - Purpose

Program for Manipulating Formatted Data Files , NBS Tech Note 444 CAug

1968) . Available from the National Technical Information Service (NTIS)

,

Department of Commerce, 5285 Port Royal Road, Springfield, Virginia 22151,

Price $3.00.

2/ -'Messina, C. G., and Hilsenrath, J., EDPAC : Utility Programs for

Computer -Assisted Editing , Copy Production , and "Data Retrieval , NBS Tech

Note 470 (Jan 1969JT Available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402, Price 75 cents.

-40-
The third release in this series is called COMBO and is described in

NBS Tech. Note 700—'. It consists of a main program and modified versions

of REFORM, SEARCH, and multiple table SUBSTITUTE. The need for search and

retrieval of information in the bibliographic file of the Molten Salts Data

Center at Rensselaer Polytechnic Institute motivated the writing of this

program. The file consists of cards or card images on magnetic tape. An

entry consists of a property card, a journal card, an author card and one or more compound cards. The program can be instructed to search for various

terms using a different list of terms for each type of card. When an item

is retrieved the lines can be reformatted to produce a more meaningful

printout. Although the molten salts file provided the impetus for writing

this program, it has been used on other files of similar structure.

(2) Automatic Typesetting and Composition of Data Tables , Valuable experience has been gained in writing computer programs to

convert existing tapes for automatic typesetting of NSRDS publications. An

important consideration in this work is to design the programs in so far as possible for general rather than specific applications. While complete

generality has not been achieved, the programs produced thus far have wider

applicability than to the documents on which they were used.

The experience gained in turning out about a half-dozen publications - more-or-less automatically - is encouraging enough for us to be optimistic

that the conversion techniques will soon be simple enough so that each data

center will be able to handle the file conversions themselves. This is in

sharp contrast to the experience in the recent past when each book of tables

required the services for a period of one or more months of a programmer

experienced in both computing and typesetting.

The phrase, "more-or-less," is used in the above paragraph because

experience has shown that the most expeditious means for producing a finished product is to combine hand operations with computer-aided

generations. One reason for our quick success in producing a number of data

tables of complex structure is a decision to have the table captions and

column headings set by hand and placed on a transparent film. The film is

laid over each table, in turn, as the negatives are made.

SETLST and KWIND were the first programs released in this series.

These are ANSI FORTRAN IV programs which accept a card deck or FORTRAN

record on magnetic tape and insert the appropriate flags and shift symbols

required by many of the "standard" typesetting programs associated with

phototypesetting devices. KWIND is a program for formatting data entries

for KWIC (Key Word In Context) lists. These lists have a space runn'ng down

the middle of each page, with entries split to straddle the "gutter" and

ordered so that successive descriptors to the right of it are in

alphabetical order. SETLST is a program for automatically preparing

computer listings for automated photocomposition. These programs and their

3/ — McClenon, R. C, and Hilsenrath, J., COMBO : A General - Purpose Program

for Searching , Annotating , Encoding - Decoding and ~Ref"ormattmg~Data Files , MIS" Tech Note 700. In press.

-41-
characteristics are described in NBS Tech. Note 500-/. The SETLST, KWIND,

REFORM and HUPAC programs have been put on tape and are being distributed by

the NT I S^'

The second release in this series is called SETAB, an edit-insertion

program used mostly for typesetting spectroscopic tables. SETAB is a FORTRAN program that accepts fixed field records on cards or FORTRAN records

on magnetic tape and inserts typesetting flags or strings to produce a magnetic tape for input to typography programs such as those used by the

Government Printing Office. An example of the typographic complexity that

this program can handle is shown in Figure 1. Here the information in the

classifications column is handled quite differently depending on whether the

character in position 44 is numeric or alphabetic. The program and its

characterics are described in NBS Tech Note 740— .

(3) Applications of the General Purpose Scientific Document Code

System . A text-handling system based on the General Purpose Scientific Document

Code (GPSDC)— is used by a number of the data centers at NBS. This system

was designed and programmed primarily by B. C. Duncan and D. Garvin. W. Evans of the Chemical Thermodynamics Data Center and members of the Data

Systems Design Group have added special programs. GPSDC contains a set of

188 characters including upper and lower case Roman and Greek. These can be

printed on the line, above the line (as superscripts), and below the line

(as subscripts). Characters may be overprinted to form composite

characters- The character set has been chosen to be a proper extension of

the ASCII— set. The basic system provides: for input from a variety

recording typewriters, for editing and reformatting, for search and

retrieval and for output to a line printer and a photocomposition machine.

To provide GPSDC printout, a special print train was purchased which

contains the 188 GPSDC print characters. This train is used with an IBM

1403 line printer that has 16 half lines per inch line spacing— .

4/— Messina, C. G. , and Ililsenrath, J., Edit - Insertion Programs for

Automatic Typesetting of Computer Printout , NBS Tech Note 500 (April 1970).

Available from Superintendent of Documents, U. S. Government Printing

Office, Washington, D. C. 20402, Price 60 cents.

—NBS Magnetic Tape 2, Fortran Programs for Text Editing , File

Manipulating and Automatic Typesetting . Available from the National

Technical Information Service (NTIS) .Department of Commerce, 5285 Port

Royal Road, Springfield, Virginia 22151, Price $250.

-'Thompson, R. C, and Hilsenrath, J. " SETAB : An Edit Insertion Program

for Automatic Typesetting of Spectroscopic and other Computerized Tables T (To appear as NBS Tech Note 7ToT^

II -'"The Document Image Code" NBS Tech News Bull. 52 No. 4, 86 (April

1968). —

8/ — "Proposed Revised American Standard for Information Interchange"

Communications of the ACM, 8_ 207 (1965).

9/ _____ — "Prototype General Purpose Scientific Document Writer Installed" NBS

Tech News Bull. 54 No. 2, 35, (Feb. 1970).

-42-
Phototypset output is available via a special program written by Carla

Messina that takes the GPSDC information, both textual and tabular, and

prepares a magnetic tape which drives the Linotron 1010 phototypesetter at

the Government Printing Office.

Use of GPSDC by NSRDS Data Centers is illustrated by the following

examples

:

The NBS Chemical Kinetics Data Center maintains an automated literature

reference file in GPSD(H The information is keyboarded on a Dura (Itel)

paper tape typewriter or on a Model 37 teletype. In addition, Linofilm

keyboarding has been converted using special programs written by David

Garvin. Several NSRDS monographs on kinetics were keyboarded by the U. S. Government Printing Office as part of the normal publication process. The

machine- records were converted to GPSDC to add the contents of these

publications to the kinetics data file without rekeyboarding. The search

and retrieval programs are used to extract bibliographies and data on specific reactions from the data file.

The NiiS Chemical The rmo dyn am i c s Data Center is using the GPSDC system

to print 5x8 cards for their card file. Annotated bibliographic information

is keyboarded on a Dura (Itel) paper tape typewriter for input to GPSDC.

Special programs written by W. Evans are used to format author and

substance-property cards which are then printed on the GPSDC printer. A

portion of this input combined with some additional keyboarding is used to

construct the inorganic section of the Bulletin of Thermodynamics and

Thermochemistry . Programs written by W. H. Evans interpret the chemical

formulae and reactions to generate index and sort keys. These keys are used

to sort the information and generate an index by chemical formulae. The

bibliographic and index sections are printed on the GPSDC printer for use as camera copy.

The Thermodynamics Research Center at Texas ASM University also use GPSDC for their contribution to the Bulletin of Thermodynamics and

Thermochemistry . They keyboard the material for the organic section on a Frieden Flexowriter according to instructions from the NBS Chemical

Thermodynamics Data Center. All editing, sorting, arranging, and final copy

preparation are performed in the GPSDC system in the same manner as the

inorganic section.

The NBS Crystal Data Center keyboarded the material for the book

"Crystal Data" on a Linofilm keyboard. Later a decision was made to

phototypeset the book on the Linotron machine because less errors would be

introduced and a better publication schedule could be obtained. The

Linofilm records were converted to GPSDC, proof copies were made on the

GPSDC printer, and the corrected copy processed to drive the Linotron.

The NBS Alloy Data Center has issued two publications —' —' that have

passed through GPSDC on their way to publication. The program SETLST was used to convert the information into the desired format for input to GPSDC.

Then a Linotron driver tape was produced which was used to prepare the

printed copy. —'Carter, G. C, et al. The NBS Alloy Data Center : Permuted Materials

Index , NBS Special Publication 324. Available from the Superintendent of

Documents, U. S. Government Printing Office, Washington, D. C. 20402, Price

$7.00.—'Carter, G. C, et al, The NBS Alloy Data Center : Author Index . NBSOSRDB-70-2 (COM- 71-00722). AvaTlabTe from National Technical Information

Service, Springfield, Va. 22151, Price $10.00.

-43-
The NBS Atomic Energy Levels Data Center has keyboarded a bibliography

on a Dura (Itel) paper tape typewriter. This bibliography has now been

converted to GPSDC. An authors index was generated in GPSDC. The

bibliography and index were phototypeset on the Linotron from a driver tape

written at NBS via the programs SETDIC and ALGRID.

The NHS Mass Spectroscopy Data Center is preparing a revision of NBSNSRDS 26. The tables and text are being keyboarded on a Model 37 teletype.

The teletype tape is converted to GPSDC. Printout from the GPSDC printer is

used for proofreading. After correction the report will be printed by

generating a Linotron Driver tape. This is another example of source automation of NSRDS publications.

The Radiation Chemistry Data Center at Notre Dame University is

keyboarding reports on a Dura paper tape typewriter. The paper tape is

converted to magnetic tape, which is sent to NBS for conversion to GPSDC.

Printout from the GPSDC printer is returned for proofreading. Corrections

in the GPSDC system are keyboarded on the Dura and converted to magnetic

tape which is sent to the Data Systems Design Group for tape updating.

After one or more editing cycles the material is processed by Carla

Messina's SETDIC and ALGRID programs to produce a magnetic tape to drive the

Linotron 1010. This example of source automation is interesting because it was done at some distance rather than close at hand at NBS.

The Analytical Chemistry Division has used SETLST to convert their

annotated Activation Analysis bibliography file from all upper case to GPSDC

with upper and lower case. They are using the GPSDC system to generate

indexes which will be published with the bibliography.

The Fundamental Vibration Frequencies of Molecules project at the

University of Tokyo, Japan is keyboarding taFles on punched cards using a coding scheme developed by NBS for input to GPSDC. A duplicate deck of

cards is sent to NBS to be converted to GPSDC. Printout from the GPSDC

printer is returned to Tokyo for proofreading. Editing and corrections of

the cards is performed at Tokyo. When the cards for the tables in a report

have been punched and corrected, a duplicate set will be sent to NBS to be

converted to GPSDC. Then the material will be processed by the SETDIC and

ALGRID programs to produce a magnetic tape to drive the Linotron 1010

phototypesetter. The original cards will be retained at Tokyo for updating

and to produce a combined publication after several papers have been

published. This example of source automation is interesting because it is

done in a foreign country.

(4) Automated Citation and Abstract Retrieval . The various abstracting and alerting services have began supplying

their service to customers on magnetic tape. These tapes can be leased and

used to supply SDI services and retrospective searches. A number of

commercial and nonprofit organizations are presently selling these services.

At the present time, they provide hard copy output on cards or paper but

they supply no machine readable output. If computer printout is acceptable

to the user, these organizations provide the most economical source of such

services

It has been suggested that a machine readable form would be more usable

by the data centers associated with NSRDS. To determine the validity of

this concept, the Data Systems Design Group has obtained sample SPIN and

INSPEC tapes covering the current physics research literature. Computer

programs have been written to search these tapes and to reformat the output.

Sample searches have been performed for four data centers. Results of these

experiments served to convince us that the determination of the utility of

computerized abstracts in data center operations required experiments on the

-44-
regular releases rather than a sample tape. Accordingly, OSRD has

subscribed to the SPIN tapes produced by the American Institute of Physics.

Programs are being written to convert the output of the search to GPSDC

so the results can be printed on the GPSDC printer using an extended

character set.

(5) Source Automation of Technical Manuscripts . In addition to

automating the book production ofthe National Standard Reference Data

System, the staff of the Data Systems Design Group has undertaken the

development of on-line keyboarding techniques for the NBS publications. The

objectives of the work is to devise techniques that are so simple and costeffect as to enable the computerization of technical manuscripts literally

at the authors desk. The system which has already^produced two major

publications in the Applied Mathematics Series —' —' has the following

characteristics

:

(a) Keyboarding on a "scripting" typewriter provided upper

and lower case Latin and Greek alphabets, in three

positions and in two colors.

(b) On-line keyboarding and text editing at only $3.00 per

hour connect time.

(c) Conversion via magnetic tape from IBM Archival format

provides an additional opportunity for formatting and

corrections on the UNIVAC 1108.

(d) Processing on the 1108 via SETDIC and ALGRID programs

produces driver tapes for the Linotron 1010.

When undertaking the development of keyboarding techniques that would

be attractive enough for authors and their typists to assume responsibility

for supplying machine readable version of their manuscripts, we deemed it

essential to change as little as possible, the normal "good practice"

employed by typists experienced in the preparation of manuscripts for

publication.

The experienced typist is usually careful to align columns of numbers

and to center numerators over denominators in displayed mathematical

expressions. Our programs rely on these spatial relationships between

characters normally found in well typed manuscripts to achieve the

corresponding distribution on the typeset page. Excerpts from NBS

publications phototypeset from machine readable media produced at the source

are shown in Figures 4, 5, and 6.

—12/'John, et al., Cyclic Designs , NBS Applied Mathematics Series 62,

April 1972. —13/'Clatworthy, et al., Tables of Two - Associate - Class Partially Balanced

Designs , NBS Applied Mathematics Series 6T~. In press.

-45-
(6) Other Activities . The success of the NBS computerized typesetting operations has

attracted attention in a number of government agencies. Prominent among

these are the publications office of the Navy Department, the Department of

Commerce and the Government Printing Office.

The Office of Publications of the Navy Department has made extensive

use of the Robert Thompson's multiple table SETLST program for producing a variety of publications ranging from spare parts lists to Navy training

manuals. That program has been rewritten for the IBM 360. It now operates

on the computer at the Government Printing Office. At the request of the

late Public Printer N. Spence, Carla Messina's program ALGRID was rewritten

to operate on the IBM 360/50 at the G.P.O. The use of the ALGRID program

reduces to a trivial number the grid changes that are required to typeset

scientific material on the Linotron 1010. The use of the ALGRID program

reduces the time required to typeset a typical page of complicated

scientific text on the Linotron 1010 from a minute to a few seconds.

Without this facility it would not be practical to phototypeset the U. S. Patent publications.

-46-
Tab LE 3. Observed and classified lines o/Wi

Intensity Wavenumber (cm" 1 ) Wavelength

A

Classification Arc Spark Observed o—

c

2746.734 40 36396.11 +0.02 15*- 518°4 2747.005 50 2 36392.52 +0.06 3 Pi- 496°2 2747.155 15 3 36390.54

2747.826 40 2 36381.65 -0.21 5 Z>4- 426°3 +0.16 *D 2-

3 G 4-

397°2 528° 27 2746 ,734 40 36396.11 +0.02 153 - 51840 3 27 2747.005 50 2 36392.52 +0.06 3P1 - 49620 18 3- 553°4 27 2747.155 15 3 36390.54 20 2- 573°3 27 2747.826 40 2 36381.65 -0.21 5D4 - 42630 W?- 411°4 27 0.16 5D2 - 39720 19 2- 556°2 2748.312 20 15S 36375.21 -0.04 364 - 52830

27 2748.577 30 3 36371.71 +0.02 133 - 55340

27 2748.767 5 36369.20 -0.10 202 - 57330

27 2748.844 80 20 36368.17 +0.03 503 - 41140 3 c 3- 496°2 27 2748.997 25 2 36366.15 +0.15 192 - 55620 826 5- 561

°4 ?ll 2749.538 1 2 36359.01

19 IT fifitt .

Figure 1. A portion of a spectroscopic table set from information supplied

on ordinary punched cards. Note how differently the lines containing pure

numerics are treated from those that contain mixtures of letters and

numbers. This specialized treatment was handled by a general-purpose

program called SETAB.

146. Ehmann, W. D., Huizenga, J. R. Bismuth, thallium and mercury in stone meteorites by activation analysis. Geochim. Cosmochim. Acta, 17, 125—135 (1959). (ENGLISH). ARCONNE NATIONAL LAB., LEMONT, ILLINOIS.

147. Eichholz, G. G. Activation assaying for tantalum ores.

Nucleonics, 10, No. 12, 58-61 (1952). (ENGLISH). RADIOACTIVITY DIVISION, DEPT. OF MINES AND TECHNICAL SURVEYS, OTTAWA,

CANADA.

151. Facchini, U., Orsoni, L. A method for the determination of uranium content in minerals by using the

fission of U—235. Nuovo Cimento, 6, 241-254 (1949). (ITALIAN) (ENGLISH SUMMARY). CENTRO INFORMAZIONI STUDI ESPERIENZE (C.I.S.E), MILANO,

ITALY.

Figure 2. A portion of a test run of a bibliography produced on the Linotron 1010 at the GP0 direct from a tape generated at NBS

using the program SETLST. Here the source consisted of fixed

field records in all caps. While the need for so much

typographic variation is doubtful the exercise illustrates the

flexibility of the general-purpose programs employed here.

-47-
Figure 3. The design tables in AMS 62 were typeset

from information on magnetic tape which required three

types of transformations shown here. These

transformations were handled via a general purpose

substitution program instructed by a short substitution

table.

-48-
References

bock, R.D. (1S>i>&). Remarks on the test of significance for the method

paired comparisons, psvchome trika 23, 323-334.

Bock, R.C. ana Jones, L.V. (19bb). Ihe fleasyrement ajia Prediction oj.

J\naeme nt ana Choice . Holaen Day: San Francisco.

Bose, R.C. (1i>i>b). Paired comparison designs tor testing concoraance

between juages . Biometrika 43, , 1 1 3-1 21 .

bose, R.C. ana Cameron, J.M. (1*b5). The bridge tournament problem and

calibration aesigns for comparing pairs of objects. J^ Res, Nat,

bur. Stana. b£B, 323-332.

bose, ] 8(

11 Bose, ] P

B

Bose, ] b,

MMiMStMSMM

Bock, R.D. (1958). Remarks on the test of significance for the

method paired comparisons. Psyc hornet rika 23 . 323-334.

Bock, R.D. and Jones, L.V. (1968). The Measurement and

Prediction of Judgement and Choice. Holden Day: San

Francisco.

Bose, R.C. (1956). Paired comparison designs for testing

concordance between Judges. Blometrlka *3, 113-121.

Bose, R.C. an problem

objects.

10. References

Bock, R.D. (1958). Remarks on the tesl of significance for the method of paired comparisons. Psychometrika 23, 323-334. Bock, R.D. and Jones, L.V. (1968). The Measurement and

Prediction of Judgement and Choice. Holden Day: San

Francisco. Bote, R.C. (1956). Paired comparison designs for testing concordance between judges. Biometrika 43, 113—121.

Bose, R.C and Cameron, J.M. (1965). The bridge tournament problem and calibration designs for comparing pairs of objects. /. Res. Nat. Bur. Stand. 69B, 323-332.

Bose, R.C. and Cameron, J.M. (1967). Calibration designs based on solutions to the tournament problem. J. Res.

Nat. Bur. Stand. 71B, 149-169.

tournament

.ng pairs of

332.

Figure 4. A portion of the reference list in AMS 62 shown: as keyboarder! on the Model 37 Teletype; as produced on the line- printer after passing through the justification program; and as it appeared on the printed page. Note that the author is able to

see, from the computer listing, line for line how the final material will appear when typeset.

-49-
! Totals 125.6 15.7 64.9 138.9 104.8 14b. Q 199.9 155.2

DATA

J3, P, P* /3 4 (i, H6 0, 0, /«, 0, 0n 012 flu Totals

«2

-25.0 -14.0 -25.0

3.1 -8.0 -8.0

-22.0 -22.0 -33.0

-50.7 -51.7 -59.8

-32.0

-16.9 -38.0

-96.0

-29.8 -115.0

-62.9 -225.1

<*s -40.0 -40.1 -51.0 -50.0 -181.1 «6 -13.0 -35.9 -34.0 -31.0 -113.9

<*7 -31.1 -40.0 -41.0 -38.0 -150.1

<*• -41.2 -51.2 -48.0 -50.0 -190.4 a. -5.0 -11.0 -11.8 -20.3 -48.1 «» -28.1 -23.2 -25.2 -28.0 -104.5

«ll -57.1 -66.1 -65.7 -73.1 -262.0 «» 8.2 -13.0 -19.0 -14.3 -38.1

p

Totals

-3.5 -3.8 -10.1 -15.0 -32.4

125.6 15.7 64.9 138.9 104.8 148.0 199.9 155.2 100.1 105.0 157.8 150.4 120.2 -1586.5

Figure 5. A table from "Cyclic Designs" (AMS 62) as keyboarded

on a Model 37 Teletype and as typeset on the Linotron 1010 at the

G.P.0. Note that except for the hats that are typed in red to

designate bold face, the normal typewritten layout serves to

produce a properly aligned photocomposed table.

-50-
ir1 = a? - dA)(iu-uj')j

The quantities w ana A which enter into

the above equations are not known ana

have to be estimatea from the

observations themselves. This can be

aone by forming an auxiliary analysis of

variance table (Table 2) ^ We estimate o* and a by equating

b

ss anG E

ss

to their expectations. This

gives estimates of uj ana ou'

M"' = 0)1 - (l/kXo.-aOJ

The quantities o> and w' which enter into the above equations bk-b-t+1

are not known and have to be estimated from the observations themselves. This can be done by forming an auxiliary analysis E

of variance table (Table 2). We estimate cr and cr^ by equating B„ and E„ to their expectations. This gives estimates of oi and tu'

SS

tCr-1 )

a bk-b-t+1

(t-k)E

KB . _!L

a, _ t(r-l) bk-b+t+1

. „ (t-k)E kB "

" bk-b+t+1

Figure 6. a portion of the text from a book on Cyclic

Designs (NBS Applied Mathematics Series 62) as it was

keyboarded on a Model 37 Teletype and as it appears in the

printed work. The phototypesetter - the Linotron 1010 at

the U. S. Government Printing Office - was driven directly

from a magnetic tape generated from the original keyboarding

by a suite of programs developed under the aegis of the

Office of Standard Reference Data. It is an important

feature of the system employed here, that it accepts

typescript in a form nearly identical to the standard good

practice in preparing scientific text for publication on an

ordinary typewriter.

-51-
IV. INFORMATION SERVICES

Four major activities comprise the Information Services: the

maintenance of a data file; editorial liaison assistance between groups

producing the data compilations and the publishers; answering inquiries; and

analyzing present and future requirements for reference data.

Data File . The mission of the Data File is to acquire selectively

world-wide reference data compilations and ancillary publications within the

scope of the NSRDS and to organize the collection systematically. A

listing, including abstracts of the reference data collection, was published

in September 1970 as NBS Technical Note 554, Annotated Accession List of

Data Compilations of the NBS Office of Standard Reference Data . Tt

contained almost 13U0 items. The Data File has an additional collection of

about 600 related documents. As of June 1, 19 72, the Data File housed more

than 1600 reference data and ancillary publications and more than 1000

related documents. Data File personnel are also in the process of

developing an index for NSRDS publications.

Editorial Liaison Services . This activity serves as the editorial

intermediary between the data centers of the NSRDS and other individuals and

groups producing data compilations and reviews, on the one hand, and

publishers on the other hand. A new publisher since early 1972 is a consortium of the American Chemical Society and American Institute of

Physics which publishes the Journal of Physical and Chemical Reference Data . Other publishers include the U.S. Government Printing Office, commercial

publishers, and the National Technical Information Service. One of the

functions of the Editorial Liaison Services is to produce the monthly

newsletter, NSRDS NEWS, which has a mailing list of almost 6000. The

newsletter contains general information on data evaluation, news of specific

projects and announcements of new publications.

The program has produced thus far three quarterly issues of the Journal

of Physical and Chemical Reference Data ; 53 publications in the NSRDS series

oF critically evaluated data compilations ; 16 other compilations of data; 29

nondata publications from NSRDS-related projects, as well as 33 publications

under the aegis of various of its associated data centers.

Inquiry Services . This activity responds to inquiries received by the

Office of Standard Reference Data. Information and data are provided from

NSRDS publications and other available sources. Inquiries may be referred

to data centers and individual specialists in NBS and elsewhere. At times

references are provided; if available and appropriate, copies of

publications or excerpts therefrom containing the requested data are furnished. OSRD receives about 1200 requests and inquiries during a calendar year. Negative replies sent during 1971 because of a complete lack

of information or inability to refer the correspondent to a likely source of

information totalled only eleven.

Analysis and User Relations . The mission of this activity is to

provide the Office understanding of requirements, both present and future,

of NSRDS' s actual and potential users. Among its recent efforts have been

two surveys, which are described in the two following paragraphs.

Because technical librarians often serve as intermediaries between

National Standard Reference Data System publications and their users, the

Office of Standard Reference Data in 1970 surveyed by mail 2,700 selected

members of the Special Libraries Association to check their knowledge and

use of NSRDS publications as well as to learn the problems they encounter in

providing the publications or their data to their users. On the basis of a 22% response, the survey results showed that almost 88% of the responders

-52-
have heard of the NSRDS and that about 59% have indicated that their

libraries acquire NSRDS publications, but less than 44% of the responders

have used an NSRDS publication; however, 94% of this latter percentage (the

users) indicated that they have found NSRDS publications very, or to some

extent, useful. The survey revealed that distribution and dissemination

procedures of NSRDS publications need improvement and that better ways need

to be found to acquaint both librarians and users with the data and

information contained in NSRDS publications.

In 1971, OSRD surveyed purchasers of NSRDS publications to assess what

benefits the publications provided its users as well as to obtain feedback

on user experience, requirements, and problems of use. Returns provided

evidence that the publications were meeting the two goals of the NSRDS

programs: (1) making available reliable physical and chemical reference

data; and (2) helping improve the quality and productivity of scientific and

technological measurements by means of its published evaluations and

criteria. The responders indicated the publications were helpful to them in

meeting their data requirements. Specific uses and benefits were

identified. The greatest use of NSRDS publications was in connection with

basic research. The results of the survey emphasized that awareness and use

of NSRDS compilations are steadily increasing but continued and emphasized

promotion is needed, especially among scientists and engineers working on applied technological problems.

-53-
APPENDIX IA

FEDERAL COUNCIL FOR SCIENCE AND TECHNOLOGY

COMMITTEE ON SCIENTIFIC INFORMATION

28 May 1963

Federal Policy on National Standard Reference Data System

There will be established a National Standard Reference Data System

(NSRDS) to provide on a national basis critically evaluated data in the physical

sciences. The NSRDS will consist of a National Standard Reference Data Center

(NSRDC) at the National Bureau of Standards and such other Standard Reference

Data Centers as may be required.

The National Bureau of Standards will be charged with the administration of

the National Standard Reference Data System. This assignment will include the

establishment of standards of quality, methodology including machine processing

formats, and such other functions as are required to ensure the compatibility of

all units of the NSRDS.

The National Bureau of Standards will be charged with funding and administering the National Standard Reference Data Center. This Center will be an identifiable part of the National Scientific and Technical Information System (NSTIS).

Standard Reference Data Centers covering certain specific areas of effort may

be established by or be assigned to the various Departments and Agencies in ac- cordance with their specific desires and capabilities. Such Centers will be financed

and administered by the Department to which assigned but will meet the quality

standards and other requirements of the NSRDS. Such Centers will be included

as identifiable components of the NSTIS.

The NSRDS may also include Standard Reference Data Centers at universities, research institutes, and other appropriate non-Government activities. To be

included in the NSRDS, such Centers will meet the quality standards and other

requirements of the NSRDS and will be included as identifiable components of the

NSTIS.

There will be an Advisory Board to review and recommend policy relative to the operation of the NSRDS. It will include among others, representation from

the National Academy of Sciences, National Science Foundation, Federal Agencies

engaged in research and development, and such other representatives of the sci- entific and technical community as the Director of the National Bureau of Standards may determine.

In establishing the NSRDS, the intent is to provide an articulated system of

Centers and activities under such coordination and direction as to ensure an out- put meeting quality standards for national reference data in the physical sciences.

The establishment of the System should not be construed as preventing the establishment of such Federal or Departmental Data Systems as are required for the

collection of raw or evaluated data to serve engineering or operating needs of the

Federal Government or various Federal agencies.

-54-
APPENDIX IB i i *m^mm*^ Public Law 90-396

90th Congress, H. R. 6279

July 11, 1968

To provide for the collection, compilation, critical evaluation, publication, and

sale of standard reference data.

lie it enacted by the. Senate and Home of Representative* of the United State* of America in Congres* axxemblcd,

DECLAMATION OF POLICY Section 1. The Congress hereby finds and declares that reliable standardized scientific and technical reference data are of vital im- portance to (lie progress of the Nation's science and technology. It is therefore the policy of the Congress to make critically evaluated refer- ence data readily available to scientists, engineers, and the general

public. It is the purpose of this Act to strengthen and enhance this pol icy.

Standard Reference Data Aot.

82 STAT. 339

Colleotion and publication of standard referenoe data.

DEFINITIONS 82 STAT. 340

Sec. 2. For ^he purposes of this Act

(a) The term "standard reference data" means quantitative infor- mation, related to a measurable physical or chemical property of a

substance or system of substances of known composition and structure, which is critically evaluated as to its reliability under section 3 of this Act.

(b) The term "Secretary" means the Secretary of Commerce.

Sec. 3. The Secretary is authorized and directed to provide or ar- range for the collection, compilation, critical evaluation, publication,

and dissemination of standard reference data. 'In carrying out this program, the Secretary shall, to the maximum extent practicable,

utilize the reference, data services and facilities of other agencies and

instrumentalities of the Federal Government and of State and local governments, persons, firms, institutions, and associations, with their consent and in such a manner as to avoid duplication of those services and facilities. All agencies and instrumentalities of the Federal Gov- ernment are encouraged to exercise their duties and functions in such manner as will assist in carrying out the purpose of this Act. This

section shall be deemed complementary to existing authority, and

nothing herein is intended to repeal, supersede, or diminish existing

authority or responsibility of any agency or instrumentality of the Federal Government.

Sec. 4. To provide for more effective integration and coordination of standard reference data activities, the Secretary, in consultation with

other interested Federal agencies, shall prescnl>e and publish in the Federal Register such standards, criteria, and procedures for the preparation 'and publication of standard reference data as may l>e necessary

to carry out the provisions of this Act. Sec. 5. Standard reference data conforming to standards established by the Secretary may be made available and sold by the Secretary or by a person or agency designated by him. To the extent practicable

and appropriate, the prices established for such data may reflect the

cost of collection, compilation, evaluation, publication, and dissemination of the data, including administrative expenses; and the amounts

received shall be subject to the Act of March 3, 1901, as amended (15 U.S.C.271-278e).

Sec. 6. (a) Notwithstanding the limitations contained in section

8 of title 17 of the United States Code, the Secretary may secure copyright and renewal thereof on behalf of the United States as author

or proprietor in all or any part of any standard reference data which

Standards, etc. Publication in

Federal Register.

Sale of referenoe data. Cost recovery.

31 Stat. 1449; Ante , p. 34.

U. S. oopyright and renewal

rights.

61 Stat. 655

|

76 Stat. 446.

-55-
Pub. Law 90-396

82 STAT. 340 - 2 July 11, 1968

Appropriation.

Short title.

ho prepares or makes available, under this Act, and may authorize

the reproduction and publication thereof by others. (b) The publication or republication by tnc Government under this Act. either separately or in a public document, of any material in which

copyright is subsisting shall not bo taken to cause any abridgment or annulment of the copyright or to authorize any use or appropriation

of such material without the consent of the copyright proprietor. Sec. 7. There arc authorized to be appropriated to carry out this Act, $1.86 million for the fiscal year ending June 30, 1!)C>9. Notwithstanding the provisions of any other law, no appropriations for any

fiscal year may be made for the purpose of this Act after fiscal year

1S)(>!> unless previously authorized by legislation hereafter enacted by

the Congress.

Skc. 8. This Act may be cited as the "Standard Reference Data Act." Approved July 11, 1968.

LEGISLATIVE HISTORY t

HOUSE REPORT No. 260 (Comm. on Solenoe and Astronautios). SENATE REPORT No. 1230 (Coma, on Corameroe). CONGRESSIONAL RECORD:

Vol. 113 ( 1967) i lug. 14, oonsidered and passed House. Vol. 114 (1968)t June 13, oonsidered and passed Senate, amended.

June 27, House oonourred In Senate

amendments.

gpo ee-139

-56-
APPENDIX II CONTINUING DATA CENTERS IN THE UNITED STATES

As the management office for the NSRDS, the OSRD has certain general

responsibilities for coordinating all of the physical science-related data

compilation and evaluation activities going on with Federal Government

sponsorship. This coordination is not restricted to centers formally

supported by OSRD. As a minimum level of "coordination," OSRD seeks to

learn about and communicate regularly with all such centers which fall

within the following guidelines:

a) The major objective of the center should be to provide

evaluated numerical data within the technical scope of NSRDS.

b) The center should retrieve, store, and index articles within

its scope from the world literature, on a regular basis and

in a comprehensive manner.

c) There should be some reasonable expectation of continuity, as demonstrated by the commitment of the personnel and the

stability of the financial support.

d) The output of the center should be readily available.

Listed below are all the identified data centers in the United States

which meet these guidelines. To avoid repetition, centers which have been

described in Chapter II are listed by title only, with a reference to the

earlier entry. The detailed entries which follow are, accordingly, for

those centers which have no formal connection with, and receive no financial

support from the Office of Standard Reference Data as of June, 19 72.

It is recognized that some groups may have been omitted from this list

because of a lack of information on their activities. The Office of

Standard Reference Data welcomes suggestions on continuing centers which

should be included.

A more detailed description of most of the centers may be found in

CODATA- International Compendium of Numerical Data Projects , (SpringerVe.rlag, New York, Heidelberg, Berlin, 1969 ). Further information is also

given in the Directory of Federally Supported lnformation Analysis Centers , available from the National Technical Information Service, Springfield,

Virginia, as COSATI-70-1 (PB 189300).

Code for Source of Support :

NBS: National Bureau of Standards (other than OSRD)

AEC: Atomic Energy Commission

USAF: United States Air Force

-57-
LIST OF CONTINUING DATA CENTERS

Thermodynamic and Transport Properties

1. Title : Chemical Thermodynamics Data Center

(See II Al)

2. Title : Thermodynamics Research Center

(See II A4)

3. Title : Thermophysical Properties Research Center

(See II A20)

4. Title : Cryogenic Data Center

(See II A9)

5. Title : JANAF Thermochemical Tables

Location : Dow Thermal Research Laboratory, Midland, Michigan

DirectoF : Formerly, D. R. Stull, now H. Prophet

Source of Support : USAF

Coverage! Thermodynamic properties in the solid, liquid, and/or ideal

gaseous state over the temperature range of 0-6000°K. Covered are the following elements: Al, B, Ba, Be, Br, C, Ca, CI, Co, Cs, F,

Fe, H, Hg, I, K, Li, Mg, Mo, N, Na, Nb, 0, P, Pb, S, Si, Sr, Ta,

W, Zr, and e- and their simple compounds, principally those with

the halogens, oxygen, and hydrogen. Properties given are heat

capacity, entropy, Gibbs energy function, enthalpy (heat content),

heat of formation, and Gibbs energy of formation for the ideal

gas, liquid or solid state. Other pertinent properties such as molecular weight, point group, ground state configuration or statistical weight, vibrational frequencies and degeneracies, bond

distances and angles, and the product of the moments of inertia

are also presented.

Form of Output : JANAF Thermochemical Tables, Second Edition, by D. R. Stull and H. Prophet published in 1971 as NSRDS-NBS 37. Additions

and revisions released periodically in data-sheet form.

6. Title : Binary Metal and Metalloid Constitution Data Center

(See II A18)

7. Title : Thermodynamic Properties of Metals and Alloys

Location: Lawrence Radiation Laboratory, University of California,

Berkeley, California

Director : Ralph Hultgren

Source o"f Support : AEC and the American Iron and Steel Institute

Coverage": All elements and binary metallic (alloys) systems. For the

elements the following properties are considered: heat capacity,

-58-
enthalpy (heat content), entropy, Gibbs energy function (free

energy function) . Values for enthalpy and entropy of phase

changes, for Gibbs energy and enthalpy of vaporization, and for

vapor pressure are also given. For alloys, the following data are covered: Gibbs energy, entropy, enthalpy, excess Gibbs energy,

and excess entropy of formation. Values for activities and

activity coefficients, and for partial molar thermodynamic

quantities over a range of compositions are given. Phase diagrams

for most of the alloys are included. This project is terminating.

Form of Output : Tables will be published as Selected Values for the

Thermodynamic Properties of the Elements ; and of Binary Alloys

(two volumes) by the American Society for Metals.

8. Title : Contributions to the Data on Theoretical Metallurgy

Location : Thermodynamics Laboratory, Albany Metallurgy Research

Center, Albany, Oregon

Director : E. G. King; Project Director : A. D. Mah

Source "of Support : Bureau of Mines

Coverag"el The elements and their inorganic compounds of interest in

metallurgical and ceramic operations. Included are oxides,

halides, carbides, carbonates, sulfides, sulfates, nitrates,

nitrides, and some intermetallic and interoxide compounds.

Properties given include Gibbs energy, entropy, heat content

(enthalpy), high and low temperature heat capacity, heat and free

energy of formation and phase change, and vapor pressure.

Form of Output : Published as bulletins of the Bureau of Mines. Some

related publications appear as Bureau of Mines "Report of

Investigations" series.

9. Title : Thermochemistry for Steelmaking

Location : Department of Metallurgy, Massachusetts Institute of

Technology, Cambridge, Massachusetts

Director : J. F. Elliott

Source "of Support : American Iron and Steel Institute

Coverage! Selected elements and compounds involved in the chemistry

and technology of steelmaking. The compounds include: carbides,

nitrides, oxides, phosphides, silicides, and sulfides. Binary and

ternary iron alloys and solutions, complex oxide systems, and

slags are also treated. The properties include: heat content

(enthalpy) and temperature of phase changes; heat capacity;

enthalpy, entropy and Gibbs energy function at 100-degree as appropriate. The following properties, as available, are also

given: density, thermal conductivity, electrical resistivity,

total and spectral emissivity, viscosity, surface tension, vapor

pressure, solubility (including gases), diffusion, and activity

coefficients.

Form of Output : Book published commercially by Addison-Wesley

Publishing Company in 2 volumes, Thermochemistry for Steelmaking .

10. Title : Molten Salts Data Center

(See II A15)

11. Title : High Pressure Data Center

(See II A19)

-59-
Atomic and Molecular Data

1. Title : .Atomic Energy Levels Data Center

(See II B2)

2. Title ; Atomic Transition Probabilities Data Center

(See II B6)

3. Title : Data Center on Atomic Line Shapes and Shifts

(See II B7)

4. Title : Atomic Collision Cross-Section Information Center

(See II B8)

5. Title : Atomic and Molecular Processes Information Center

(See II B9)

6. Title : X-Ray Attenuation Coefficient Information Center

(See II B12)

7. Title : Diatomic Molecule Spectral Data Center

(See II B13)

8. Title : Microwave Spectral Data Center

(See II B14)

9. Title : Data Center for Atomic and Molecular Ionization Processes

(See II B18)

-60-
Chemical Kinetics

1. Title : Chemical Kinetics Information Center

(See II CI)

2. Title : Radiation Chemistry Data Center

(See II C2)

-61-
Solid State Data

1. Title : Single Crystal Data Center

(See II Dl)

2. Title : Cambridge Crystal Data Centre

(See II D2)

3. Title : Alloy Data Center

(See II D3)

4. Title : Diffusion in Metals Data Center

(See II D4)

5. Title : Superconductive Materials Data Center

(See II D5)

6. Title : Phase Diagrams for Ceramists

Location : Inorganic Materials Division, NBS, Washington, D. C. Director : Ernest M. Levin

Source "of Support : American Ceramic Society; NBS

Coverag"el Systems of special interest to ceramists: metal-oxygen and

metal oxide systems (including Si), systems with oxygen-containing

radical systems containing halides, sulfides, cyanides, alone and

with other substances, systems of water with metal oxide and

miscellaneous substances. Phase diagrams for one-, two-, three-,

temperature, and composition. For some systems, multidiagrams

show isothermal and isoplethal sections of phase relations; for

others, relations, and base systems of tetrahedra are given.

Melting points of metallic oxides, molecular weights of oxides and

atomic weights are presented.

Form of Output : Publications of the American Ceramic Society.

-62-
Nuclear Data

Title : Nuclear Data Project

Location : Oak Ridge National Laboratory, P. 0. Box X,

Oak Ridge, Tennessee

Director : Daniel J. Moren

Source "of Support : AEC

Coverage": Energy Levels and other properties of all nuclides, with

emphasis on those with A > 40.

Form of Output : Nuclear Data Sheets, now published as Section B of the

journal, Nuclear Data , Academic Press.

Title : Photonuclear Data Center

(See II El)

Title : Table of Isotopes

(See II E3)

Title : National Neutron Cross Section Center

Location : Brookhaven National Laboratory, Upton, New York

DirectoT: S. Pearlstein

Source of Support : AEC

Coverage : All available neutron cross section data for all nuclides

and naturally occurring mixtures of isotopes.

Form of Output : Compilations of cross section data, published as the

"Barn Books", (NBL-325 and BNL-400 series). Answers to specific

inquiries for data in form of listings, tapes, or graphical

displays.

Title : Physical Data Group

Location : Lawrence Radiation Laboratory, University of

California, Livermore, California

Group Leader : Robert J. Howerton

Source of Support : AEC

Coverag"el Neutron and photon cross section data required for weapon

effects , shielding and reactor calculations; static and dynamic

parameters of critical assemblies and bulk experiments relating to

neutron multiplication and transport.

Form of Output : State-of-the-art reviews and data compilations,

published as Lawrence Radiation Laboratory reports and in the

professional journals.

Title : Fundamental Particle Data Center

(See II E2)

-63-
Colloid and Surface Properties

Title : Light Scattering Data Center

Location : Clarkson College of Technology, Potsdam,

New York

Director : Joseph Kratohvil

Source of Support : Cover ag"e~l Light scattering in gases, liquids, and liquid mixtures;

refractive index increments in liquids and solutions.

Form of Output : A critically evaluated data compilation of Rayleigh

ratio and depolarization values for liquids and liquid mixtures

in preparation.

is

-64-
Appendix III

Publications List

Publications in the National

Standard Reference Data Series

NSRDS-NBS-1, National Standard

Reference Data System— Plan of Operation, by E. L. Brady and M. B. Wallenstein, 1964

(15 cents), SD Catalog No. C13.48:1. NSRDS NBS-2, Thermal Properties of Aqueous Uni-univalent Electrolytes, by V. B. Parker, 1965 (45 cents), SD Catalog No. C13.48:2. NSRDS-NBS-3, Sec. 1, Selected Tables of

Atomic Spectra, Atomic Energy Levels and

Multiplet Tables, Si II, Si III, Si IV, by C. E. Moore, 1965 (35 cents), SD Catalog No.

Cl3.48:3/Sec. 1. NSRDS-NBS-3, Sec. 2, Selected Tables of

Atomic Spectra, Atomic Energy Levels and

Multiplet Tables, Si I, by C. E. Moore, 1967 (20

cents), SD Catalog No. Cl3.48:3/Sec. 2. NSRDS-NBS-3, Sec. 3, Selected Tables of

Atomic Spectra, Atomic Energy Levels and

Multiplet Tables, C I, C II, C in, C iv, C v, C

VI, by C. E. Moore, 1970 ($1), SD Catalog No.

C13.48:3/Sec. 3. NSRDS-NBS-3, Sec. 4, Selected Tables of

Atomic Spectra, Atomic Energy Levels and

Multiplet Tables, N iv, N v, N vi, N vn, by C.

E. Moore, 1971 (55 cents), SD Catalog No.

Cl3.48:3/Sec.4.

NSRDS-NBS-3, Sec. 6, Selected Tables of

Atomic Spectra, Atomic Energy Levels and

? Multiplet Tables, H I, D, T, by C. E. Moore,

1972 (In press), SD Catalog No. C13:48:3/Sec. 6. D NSRDS NBS 4, Atomic Transition Probabilities, Vol. I, Hydrogen Through Neon, by W.

L. Wiese, M. W. Smith, and B. M. Glennon, 1966

($2.50), SD Catalog No. C13.48:4/Vol. I. NSRDS NBS 5, The Band Spectrum of Carbon Monoxide, by P. H. Krupenie, 1966 (70

cents), SD Catalog No. C13.48:5.

NSRDS-NBS-6, Tables of Molecular Vibrational Frequencies, Part 1, by T. Shimanouchi, 1967. Superseded by NSRDSNBS-39.

NSRDS NBS 7, High Temperature Properties and Decomposition of Inorganic Salts,

Part 1. Sulfates, by K. H. Stern and E. L. Weise, 1966 (35 cents), SD Catalog No.

Cl3.48:7/Pt. 1. NSRDS-NBS-8, Thermal Conductivity of

Selected Materials, by R. W. Powell, C. Y. Ho,

and P. E. Liley, 1966 ($3). PB189698*

NSRDS NBS 9, Tables of Bimolecular Gas

Reactions, by A. F. Trotman-Dickenson and G.

S. Milne, 1967 ($2), SD Catalog No. C13.48:9. NSRDS-NBS-10, Selected Values of Electric

Dipole Moments for Molecules in the Gas

Phase, by R. D. Nelson, Jr., D. R. Lide, Jr., and

A. A. Maryott, 1967 (40 cents), SD Catalog No.

C13.48:10. NSRDS NBS 11, Tables of Molecular Vibrational Frequencies, Part 2, by T. Shimanouchi, 1967. Superseded by NSRDSNBS-39.

NSRDS NBS 12, Tables for the Rigid Asymmetric Rotor: Transformation Coefficients

from Symmetric to Asymmetric Bases and

Expectation Values of P \ , P *, and P f , by R. H. Schwendeman, 1968 (60 cents), SD Catalog No. C13.48:12. NSRDS NBS 13, Hydrogenation of Ethylene on Metallic Catalysts, by J. Horiuti and K. Miyahara, 1968 ($1), SD Catalog No. C13.48:13. D NSRDS NBS 14, X-Ray Wavelengths and XRay Atomic Energy Levels, by J. A. Bearden,

1967 (40 cents), SD Catalog No. C13.48:14. NSRDS NBS 15, Molten Salts: Vol. 1, Electrical Conductance, Density, and Viscosity

Data, by G. J. Janz, F. W. Dampier, G. R. Lakshminarayanan, P. K. Lorenz, and R. P. T. Tomkins, 1968 ($3), SD Catalog No. Cl3.48:15/Vol. 1.

65
NSRDS-NBS-16, Thermal Conductivity of

Selected Materials, Part 2, by C. Y. Ho, R. W.

Powell, and P. E. Liley, 1968 ($2), SD Catalog No.

Cl3.48:16/Pt. 2. NSRDS NBS 17, Tables of Molecular Vibrational Frequencies, Part 3, by T. Shimanouchi, 1968. Superseded by NSRDSNBS-39.

NSRDS NBS 18, Critical Analysis of the

Heat-Capacity Data of the Literature and

Evaluation of Thermodynamic Properties

of Copper, Silver, and Gold from to 300

K, by G. T. Furukawa, W. G. Saba, and M. L.

Reilly, 1968 (40 cents), SD Catalog No. C13.48:18. NSRDS NBS 19, Thermodynamic Properties

of Ammonia as an Ideal Gas, by L. Haar, 1968

(20 cents), SD Catalog No. C13.48:19. NSRDS-NBS-20, Gas Phase Reaction

Kinetics of Neutral Oxygen Species, by H. S. Johnston, 1968 (45 cents), SD Catalog No. C 13.48:20. NSRDS-NBS-21, Kinetic Data on Gas Phase

Unimolecular Reactions, by S. W. Benson

and H. E. O'Neal, 1970 ($7), SD Catalog No.

C13.48:21. NSRDS NBS 22, Atomic Transition Probabilities, Vol. II, Sodium Through Calcium,

A Critical Data Compilation, by W. L. Wiese,

M. W. Smith, and B. M. Miles, 1969 ($4.50), SD

Catalog No. C 13.48 :22/Vol. II. NSRDS NBS-23, Partial Grotrian Diagrams

of Astrophysical Interest, by C. E. Moore and

P. W. Merrill, 1968 (55 cents), SD Catalog No. C 13.48:23. NSRDS-NBS 24, Theoretical Mean Activity

Coefficients of Strong Electrolytes in Aqueous Solutions from to 100 °C, by Walter J. Hamer, 1968 ($4.25), SD Catalog No. C13.48:24. NSRDS NBS 25, Electron Impact Excitation

of Atoms, by B. L. Moiseiwitsch and S. J. Smith,

1968 ($2), SD Catalog No. C13.48:25. NSRDS NBS 26, Ionization Potentials, Appearance Potentials, and Heats of Formation of Gaseous Positive Ions, by J. L. Franklin, J. G. Dillard, H. M. Rosenstock, J. T. Herron, K. Draxl, and F. H. Field, 1969 ($4), SD

Catalog No. C13.48:26. NSRDS NBS 27, Thermodynamic Properties

of Argon from the Triple Point, to 300 K at Pressures to 1000 Atmospheres, by A. L. Gosman, R. D. McCarty, and J. G. Hust, 1969

($1.25), SD Catalog No. C 13.48:27. NSRDS-NBS-28, Molten Salts: Vol. 2 , Section

1. Electrochemistry of Molten Salts: Gibbs

Free Energies and Excess Free Energies

from Equilibrium-Type Ceils, by G. J. Janz and C. G. M. Dijkhuis; Section 2. Surface Tension Data, by G. J. Janz, G. R. Lakshminarayanan, R. P. T. Tomkins, and J. Wong,

1969 ($2.75), SD Catalog No. Cl3.48:28/Vol. 2. NSRDS NBS 29, Photon Cross Sections, At- tenuation Coefficients, and Energy Absorption Coefficients from 10 keV to 100

GeV, by J. H. Hubbell, 1969 (75 cents), SD

Catalog No. C 13.48:29. NSRDS NBS 30, High Temperature Properties and Decomposition of Inorganic Salts,

Part 2. Carbonates, by K. H. Stern and E. L. Weise, 1969 (45 cents), SD Catalog No.

Cl3.48:30/Pt.2.

NSRDS NBS 31, Bond Dissociation Energies

in Simple Molecules, by B. deB. Darwent, 1970

(55 cents), SD Catalog No. C13.48:31. NSRDS NBS 32, Phase Behavior in Binary

and Multicomponent Systems at Elevated

Pressures: re-Pentane and Methane-n-Pentane, by V. M. Berry and B. H. Sage, 1970 (70

cents), SD Catalog No. C13.48:32. NSRDS-NBS-33, Electrolytic Conductance

and the Conductances of the Halogen Acids

in Water, by W. J. Hamer and H. J. DeWane,

1970 (50 cents), SD Catalog No. C13.48:33. NSRDS NBS 34, Ionization Potentials and

Ionization Limits Derived from the

Analyses of Optical Spectra, by C. E. Moore,

1970 (75 cents), SD Catalog No. C13.48:34. NSRDS-NBS 35, Atomic Energy Levels as Derived from the Analyses of Optical Spectra, Vol. I, >H to 23V; Vol. II, 24Cr to 41 Nb;

Vol. Ill, 42Mo to "La, 72 Hf to 89Ac, by C. E. Moore, 1971 (Vol. I, $5; Vol. II, $4.25; Vol III, $4.50), SD Catalog No. Cl3.48:35/Vols. I, II, and

III. NSRDS-NBS 36, Critical Micelle Concentrations of Aqueous Surfactant Systems, by P. Mukerjee and K. J. Mysels, 1971 ($3.75), SD

Catalog No. C13.48:36. NSRDS-NBS-37, JANAF Thermochemical

Tables, 2d Edition, by D. R. Stull, H. Prophet,

et al., 1971 ($9.75), SD Catalog No. C13.48:37. NSRDS-NBS-38, Critical Review of Ultraviolet Photoabsorption Cross Sections

for Molecules of Astrophysical and

Aeronomic Interest, by R. D. Hudson, 1971

($1), SD Catalog No. C13.48:38. NSRDS NBS-39, Tables of Molecular Vibra66
tional Frequencies, Consolidated Volume

I, by T. Shimanouchi, 1972 ($3), SD Catalog No. C 13.48:39. D NSRDS-NBS-40, A Multiple! Table of As- trophysical Interest, Part I— Tables of Multiplets; Part II — Finding List of All Lines in

the Table of Multiplets (Reprint of 1945 Edition), by C. E. Moore, 1972 ($2), SD Catalog No. C 13.48:40. NSRDS NBS 41, Crystal Structure Transformations in Binary Halides, by C. N. R. Rao

and M. Natarajan, 1972 (55 cents), SD Catalog No. C13.48:41. NSRDS NBS 42, Selected Specific Rates of

Reactions of the Solvated Electron in Al- cohols, by E. Watson, Jr., and S. Roy, 1972 (30

cents), SD Catalog No. C13.48:42. NSRDS NBS 43, Selected Specific Rates of

Reactions of Transients from Water in

Aqueous Solution. I. Hydrated Electron, by

M. Anbar, M. Bambenek, and A. B. Ross, 1972 (In press), SD Catalog No. C13.48:43. NSRDS NBS-44, The Radiation Chemistry of

Gaseous Ammonia, by D. B. Peterson, 1972 (In press), SD Catalog No. C13.48:44. McDaniel, E. W., Cermak, V., Dalgarno, A., Ferguson, E. E., and Friedman, L., Ion-Molecule

Reactions, published by Wiley-Interscience Series in Atomic and Molecular Collisional Processes, 1970 ($19.95).

Mapleton, R. A., Theory of Charge

Exchange, published by Wiley-Interscience Series in Atomic and Molecular Collisional Processes, 1971 ($19.95).

D McClure, G. W. and Peek, J. M., Dissociation

in Heavy Particle Collisions, published by

Wiley-Interscience Series in Atomic and Molecular Collisional Processes, 1972 ($13.95).

Thomas, E. W., Excitation in Heavy Particle

Collisions, published by Wiley-Interscience Series in Atomic and Molecular Collisional Processes, 1972 ($22.50).

NSRDS-UCRL-20000 YN, A Compilation of

YN Reactions, by the Berkeley Particle Data

Group, January 1970. NSRDS-UCRL-20030 ttN, ttN Partial-Wave

Amplitudes, by the Berkeley Particle Data

Group, February 1970. NSRDS-UCRL-20000 NN, NN and ND Interactions [above 0.5 GeV/c] —A Compilation, by

the Berkeley Particle Data Group, August 1970. NSRDS-LBL-55, K,°N Interactions -A Compilation, by the Berkeley Particle Data Group,

March 1972. NSRDS-LBL-100, Review of Particle Properties, by the Berkeley Particle Data Group, April

1972.

Publications in the NSRDS Series reprinted

from the Journal ofPhysical and Chemical

Reference Data**

Marrero, T. R. and Mason, E. A., Gaseous Diffusion Coefficients ($6), Vol. 1 , No. 1 , 1972. Pound, G. M., Selected Values of Critical Supersaturation for Nucleation of Liquids

from the Vapor ($3), Vol. 1, No. 1 , 1972. Pound, G M., Selected Values of Evaporation and Condensation Coefficients for

Simple Substances ($3), Vol. 1, No. 1, 1972.

Tilford, S. G. and Simmons, J. D., Atlas of the

Observed Absorption Spectrum of Carbon

Monoxide between 1060 and 1900 A ($4), Vol. 1, No. 1,1972.

Shimanouchi, T., Tables of Molecular Vibrational Frequencies. Part 5 ($3.50), Vol. 1, No.

1,1972.

Domalski, E. S., Selected Values of Heats of

Combustion and Heats of Formation of Organic Compounds Containing the Elements

C, H, N, O, P, and S ($4.50), Vol. 1, No. 2, 1972. Ho, C. Y., Powell, R. W., and Liley, P. E., Thermal Conductivity of the Elements ($7), Vol. 1, No. 2, 1972. Krupenie, P., The Spectrum of Molecular

Oxygen ($6), Vol. 1, No. 2, 1972. D Wilson, W. E., Jr., A Critical Review of the

Gas-Phase Reaction Kinetics of the

Hydroxyl Radical ($4), Vol. 1, No. 2, 1972.

Other NBS Compilations of Data

NBS Tech. Note 270-3, (C13.46:270-3) Selected

Values of Chemical Thermodynamic Properties, Tables for the First Thirty-Four

Elements in the Standard Order of Ar- rangement, by D. D. Wagman, W. H. Evans, V.

B. Parker, I. Halow, S. M. Bailey, and R. H. Schumm, 1968 ($1.25). NBS Tech. Note 270-4, (C13.46-.2704) Selected

Values of Chemical Thermodynamic Properties, Tables for Elements 35 through 53

in the Standard Order of Arrangement, by

D. D. Wagman, W. H. Evans, V. B. Parker, I. Halow, S. M. Bailey, and R. H. Schumm, 1969

($1.25). NBS Tech. Note 270-5, (C 13.46:270-5) Selected

67
Values of Chemical Thermodynamic Properties, Tables for Elements 54 through 61

in the Standard Order of Arrangement, by

D. D. Wagman, W. H. Evans, et al., 1971 (55

cents). NBS Tech. Note 270-6, (Cl3.46:270-6) Selected

Values of Chemical Thermodynamic Properties, Tables for the Alkaline Earth Elements [Elements 92 through 97 in the

Standard Order of Arrangement] , by V. B. Parker, D. D. Wagman, and W. H. Evans, 1971

($1.25). NBS Tech. Note 438, (03.46:438)

Compendium of ab-initio Calculations of

Molecular Energies and Properties, by M.

Krauss, 1967 (70 cents). NBS Tech. Note 474, (C 13.46:474) Critically

Evaluated Transition Probabilities for Ba

I and II, by B. M. Miles and W. L. Wiese, 1969

(30 cents). NBS Tech. Note 484, (03.46:484) A Review of

Rate Constants of Selected Reactions of Interest in Re-Entry Flow Fields in the At- mosphere, by M. H. Bortner, 1969 (60 cents). NBS Tech. Note 724, (03.46:724) Properties of

Selected Superconductive Materials, by B. W. Roberts, 1972 ($1). NBS Monograph 70, Vol. I, (PB168072)*

Microwave Spectral Tables, Diatomic

Molecules, by P. F. Wacker, M. Mizushima, J. D. Petersen, and J. R. Ballard, 1964 ($6). ONBS Monograph 70, Vol. II, (PB189714)*

Microwave Spectral Tables, Line Strengths

of Asymmetric Rotors, by P. F. Wacker and

M. R. Pratto, 1964 ($6). NBS Monograph 70, Vol. Ill, (O3.44:70/Vol. Ill) Microwave Spectral Tables, Polyatomic

Molecules with Internal Rotation, by P. F. Wacker, M. S. Cord, D. G. Burkhard, J. D. Petersen, and R. F. Kukol, 1969 ($4.25). NBS Monograph 70, Vol. IV, (C 13.44 :70/Vol. IV)

Microwave Spectral Tables, Polyatomic

Molecules without Internal Rotation, by M.

S. Cord, J. D. Petersen, M. S. Lojko, and R. H. Haas, 1968 ($5.50). NBS Monograph 70, Vol. V, (O3.44:70/Vol. V)

Microwave Spectral Tables, Spectral Line

Listing, by M. S. Cord, M. S. Lojko, and J. D. Petersen, 1968 ($4.75). NBS Monograph 94, (03.44:94)

Thermodynamic and Related Properties of

Parahydrogen from the Triple Point to 1 00

K at Pressures to 340 Atmospheres, by H.

M. Roder, L. A. Weber, and R. D. Goodwin, 1965

(75 cents). D NBS Monograph 115, (03.44:115) The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic

Molecules, by Jon T. Hougen, 1970 (55 cents). COM-72-10014, *Rate Constants of Gas Phase

Reactions, by V. N. Kondratiev. Translated by

L. Holtschlag and R. Fristrom, 1972 ($8.50).

Nondata Publications from NSRDS Related

Projects

NBS Misc. Publ. 277, (PB191754)*

Photonuclear Data Index, prepared by the Photonuclear Data Group, NBS Radiation

Physics Division, 1966 (55 cents). NBS Misc. Publ. 281, (03.10:281)

Bibliography on Flame Spectroscopy,

Analytical Applications. 1800 to 1966, by

R. Mavrodineanu, 1967 ($2). NBS Misc. Publ. 289, (03.10:289)

Bibliography of Low Energy Electron Collision Cross Section Data, by L. J. Kieffer,

1967 (50 cents). NBS Tech. Note 290, (03.46:290) Information

Handling in the National Standard

Reference Data System, by F. L. Alt, 1966 (25 cents). NBS Tech. Note 291, (03.46:291) A Bibliography on Ion-Molecule Reactions, January

1900 to March 1966, by F. N. Harllee, H. M.

Rosenstock, and J. T. Herron, 1966 (30 cents). NBS Tech. Note 444, (TN444)* Reform: A

General-Purpose Program for Manipulating Formatted Data Files, by R. C. McClenon

and J. Hilsenrath, 1968 ($3). NBS Tech. Note 446, (03.46:446) PRECISE: A

Multiple Precision Version of Omnitab, by

A. E. Beam and J. Hilsenrath, 1968 (55 cents). NBS Tech. Note 448, (03.46:448) Status Report—National Standard Reference Data

System, April 1968, E. L. Brady, Editor, 1968

(70 cents). NBS Tech. Note 464, (03.46:464) The NBS

Alloy Data Center: Function, Bibliographic

System, Related Data Centers, and

Reference Books, by G. C. Carter, L. H.

Bennett, J. R. Cuthill, and D. J. Kahan, 1968

($1-25). NBS Tech. Note 470, (03.46:470) Edpac: Utili- ty Programs for Computer-Assisted Editing, Copy-Production, and Data Retrieval,

by C. G. Messina and J. Hilsenrath, 1969 (75

68
cents). NBS Tech. Note 500, (C13.46:500) Edit-Insertion Programs for Automatic Typesetting

of Computer Printout, by C. G. Messina and

J. Hilsenrath, 1970 (60 cents). NBS Tech. Note 553, (03.46:553) Critical

Evaluation of Data in the Physical

Sciences — A Status Report on the National

Standard Reference Data System, by D. R.

Lide,Jr., 1970 (70 cents). NBS Tech. Note 554, (C13.46:554) Annotated

Accession List of Data Compilations of the

NBS Office of Standard Reference Data, by

H. M. Weisman and G. B. Sherwood, 1970 ($1.50). NBS Spec. Publ. 306-1, (C13.10:306-l)

Bibliography on the Analyses of Optical

Atomic Spectra, Section 1, 'H-^V, by C. E. Moore, 1968 ($1). NBS Spec. Publ. 306-2, (Cl3.10:306-2)

Bibliography on the Analyses of Optical

Atomic Spectra, Section 2, 24Cr-41Nb, by C. E. Moore, 1969 (60 cents). D NBS Spec. Publ. 306-3, (C13.10:306-3)

Bibliography on the Analyses of Optical

Atomic Spectra, Section 3, 42Mo-57La, 72 Hf89Ac, by C. E. Moore, 1969 (50 cents). NBS Spec. Publ. 306-4, (C13.10:306-4)

Bibliography on the Analyses of Optical

Atomic Spectra, Section 4, 57La-71 Lu, 89Ac-

"Es, by C. E. Moore, 1969 (55 cents). NBS Spec. Publ. 320, (C13.10:320)

Bibliography on Atomic Transition Probabilities, January 1916 through June 1969,

by B. M. Miles and W. L. Wiese, 1970 ($1.25). NBS Spec. Publ. 320, Supplement I, (Cl3.10:320/Suppl. I) Bibliography on Atomic

Transition Probabilities, July 1969

through June 1971, by J. R. Fuhr and W. L. Wiese, 1971 (65 cents). NBS Spec. Publ. 322, (C13.10:322)

Photonuclear Data Index, January 1965

through January 1970, prepared by the Photonuclear Data Group, 1970 (75 cents). Supersedes NBS Misc. Publ. 277, Supplement 1. D NBS Spec. Publ. 324, (C13.10:324) The NBS

Alloy Data Center: Permuted Materials In- dex, by G. C. Carter, D. J. Kahan, L. H. Bennett,

J. R. Cuthill, and R. C. Dobbyn, 1971 ($7). NBS Spec. Publ. 349, (C13.10:349) Heavy-Atom

Kinetic Isotope Effects, An Indexed

Bibliography, by M. J. Stern and M. Wolfsberg,

1972 (45 cents). NBS Spec. Publ. 362, (03.10:362) Chemical

Kinetics in the C-O-S and H-N-O-S Systems:

A Bibliography- 1899 through June 1971,

by F. Westley, 1972 (70 cents). NBS Handbook 101, (03.11:101) OMNITAB A

Computer Program for Statistical and Numerical Analysis, by J. Hilsenrath, G. G. Ziegler, C. G. Messina, P. J. Walsh, and R. J. Herbold, Revised January 1968 ($3). Coblentz Society Specifications for Evaluation of Infrared Reference Spectra, by

Board of Managers, Coblentz Society, Analytical

Chemistry 38, No. 9 (August 1966). Kieffer, L. J. and Dunn, G. H., Electron Impact

Ionization Cross-Section Data for Atoms,

Atomic Ions, and Diatomic Molecules: I. Experimental Data, Rev. Mod. Phys. 38, No.

1,1-35(1966).

Rudge, M. R. H., Theory of the Ionization of

Atoms by Electron Impact, Rev. Mod. Phys.

40, No. 3, 564-90 (1968). Coblentz Society Evaluated Infrared

Reference Spectra, by the American Society

for Testing and Materials' Joint Committee on Atomic and Molecular Physical Data, 1969. Vol.

6, 1000 Spectra ($225). Vol. 7, 1000 Spectra

($225). Vol. 8, 1000 Spectra ($225). Index to Vols.

1-8 ($40). Cannon, J. F. and Merrill, L., A Compilation of

Volumes I-IV of Bibliography on High

Pressure Research with Author and Subject Indexes, Volumes I and II, published by

and available from High Pressure Data Center,

Brigham Young University, Provo, Utah 84601,

1972.

Publications in the OSRD Bibliography

Series*

NBS-OSRDB-70-1-V1, (PB191174) High Pres- sure Bibliography 1900-1968, Vol. I, Section I — Bibliography. Section II — Author

Index, by L. Merrill, 1970 ($7). NBS-OSRDB-70-1-V2, (PB191175) High Pres- sure Bibliography 1900-1968, Vol.

II -Subject Index, by L. Merrill, 1970 ($7). NBS-OSRDB-70-2, (COM-71 -00722) The NBS

Alloy Data Center: Author Index, by G. C. Carter, D. J. Kahan, L. H. Bennett, J. R. Cuthill,

and R. C. Dobbyn, 1970 ($10). NBS-OSRDB-70-3, (AD705110) Semiempirical

and Approximate Methods for Molecular

Calculations — Bibliography and KWIC In- dex, by G. A. Henderson and S. Frattali, 1969

($3).

69
NBS-OSRDB-70-4, (COM-71 -00025) Bibliography of Photoabsorption Cross Section

Data, by R. D. Hudson and L. J. Kieffer, 1970

($4). NBS-OSRDB-71-1, (COM-71 -00248) Bibliography on Properties of Defect Centers in

Alkali Halides, by S. C. Jain, S. A. Khan, H. K.

Sehgal, V. K. Garg, and R. K. Jain, 1971 ($3). NBS-OSRDB-71-2, (COM-71-00841) Bibliography of Kinetic Data on Gas Phase Beactions

of Nitrogen, Oxygen, and Nitrogen Oxides,

by F. Westley, 1971 ($3).

Publications of the Atomic and Molecular

Processes Information Center

Oak Bidge National Laboratory

Oak Bidge, Tennessee*

ORNL-AMPIC-1, Bibliography of Atomic

and Molecular Processes for 1963, compiled

by the Atomic and Molecular Processes Information Center, July 1965 ($6). ORNL-AMPIC-2, Directory of International

Workers in the Field of Atomic and

Molecular Collisions, September 1965,

October 1965 ($6). ORNL-AMPIC-3, Bibliography of Atomic

and Molecular Processes for 1964, compiled

by the Atomic and Molecular Processes Information Center, March 1966 ($3). ORNL-AMPIC-6, Bibliography of Atomic

and Molecular Processes for JulyDecember 1965, compiled by the Atomic and

Molecular Processes Information Center, September 1967 ($6). ORNL-AMPIC 7, Bibliography of Atomic

and Molecular Processes for January-June

1966, compiled by the Atomic and Molecular

Processes Information Center, October 1967 ($6). ORNL-AMPIC 8, Bibliography of Atomic

and Molecular Processes for JulyDecember 1966, compiled by the Atomic and

Molecular Processes Information Center, October 1967 ($6). ORNL-AMPIC-9, Bibliography of Atomic

and Molecular Processes for January-June

1967, compiled by the Atomic and Molecular

Processes Information Center, January 1968 ($6). ORNL-AMPIC-10, Bibliography of Atomic

and Molecular Processes for JulyDecember 1967, compiled by the Atomic and

Molecular Processes Information Center, June

1968 ($6).

ORNL AMPIC 11, Bibliography of Atomic

and Molecular Processes for January-June

1968, compiled by the Atomic and Molecular

Processes Information Center, January 1969 ($6). ORNL AMPIC 12, Bibliography of Atomic

and Molecular Processes for JulyDecember 1968, compiled by the Atomic and

Molecular Processes Information Center, June

1969 ($6). ORNL AMPIC 13, Bibliography of Atomic

and Molecular Processes for JanuaryDecember 1969, compiled by the Atomic and

Molecular Processes Information Center,

November 1970 ($3). D ORNL AMPIC 14, Bibliography of Atomic

and Molecular Processes for JanuaryDecember 1970, compiled by the Atomic and

Molecular Processes Information Center, June

1972 ($3).

Publications of the Joint Institute for

Laboratory Astrophysics, NBS

Boulder, Colorado

PB189132, Kieffer, L. J., Bibliography of

Photoabsorption Cross Section Data, JILA

Information Center Beport No. 5, 32 pages,

April 1968 ($3).* PB189127, Kieffer, L. J., Compilation of Low

Energy Electron Collision Cross Section

Data, Part I, JILA Information Center Beport No. 6, 95 pages, January 1969 ($3).* AD695692, Sinnott, G. A. , Bibliography of Ion- Molecule Beaction Bate Data, JILA Information Center Beport No. 9, 80 pages, August 1969 ($3).* AD696467, Kieffer, L. J., Compilation of Low

Energy Electron Collision Cross Section

Data, Part II, JILA Information Center Beport No. 7, 167 pages, September 1969 ($3).* AD865520, Chamberlain, G. E. and Kieffer, L. J., Bibliography of Low Energy Electron Collision Cross Section Data (1967-1969),

JILA Information Center Beport No. 10,44

pages, February 1970 ($3).*

Line and Band Emission Cross Section

Data for Low Energy Electron Impact, L. J. Kieffer (Editor), Appendix B in JILA Information Center Report No. 12, Proceedings of the Workshop on Dissociative Excitation of Simple

Molecules, (June 1972).

70
Publications of the Radiation Chemistry

Data Center

University of Notre Dame

Notre Dame, Indiana*

COO 38 595, Bibliography on Electron Spin

Resonance of Radiation Produced Radicals, November 1967 ($6). COO 38 621, Thesaurus for Radiation

Chemistry, Revised, August 1969 ($3).

Tsederberg, N. V., Popov, V. N., and Morozova,

N. A., Thermodynamic and Thermophysical Properties of Helium (Edited by A. F. Alyab'ev), published by Atomizdat, 1971 (S3).*

Kletskii, A. V., Thermophysical Properties of

Freon-22, published by the Committee of Standards, Measures and Measuring Instruments of the U.S.S.R. Council of Ministers — Government

Standards Service, 1971 ($3).*

COO-38-641, Bibliography on the Radiation

Chemistry of Aqueous Solutions. I. Amino

Acids, Revised, August 1969 ($3).

COO-38-642, Bibliography on the Radiation

Chemistry of Aqueous Solutions. II. Carbohydrates, Revised, August 1969 ($3).

COO-38-643, Bibliography on Radiation

Chemistry of Alcohols and Phenols,

November 1968 ($6). COO 38 661, Bibliography on Radiation

Chemistry of Alkanes, May 1969 ($6). COM 71 01103, Weekly List of Papers on

Radiation Chemistry, Index and Cumulation, Vol. IV, Nos. 1-26, January through June

1971, August 1971 ($6). COM 72 10266, Index and Cumulative List of

Papers on Radiation Chemistry, Vol. IV, Nos. 27-52, July through December 1971, January

1972 ($6).

Translations from the Russian

Eight products of the Russian standard reference

data system have been translated by the Israel Translation Service with the support of the National Science Foundation at the request of the National Bureau of Standards. These are: Vasserman, A. A., Kazavchinskii, Ya. Z., and

Rabinovich, V. A., Thermophysical Properties of Air and Air Components (Edited by A. M. Zhuravlev), published by the Academy of Sciences of the U.S.S.R., 1971 (S3).*

Kazavchinskii, Ya. Z.,KesseFman, P. M.,Kirillin, V. A., Rivkin, S. L., Sheindlin, A. E., Shpil'rain,

E. E., Sychev, V. V., and Timrot, D. L., Heavy

Water: Thermophysical Properties (Edited

by V. A. Kirillin), published by the State Power

Publishing House, 1971 (S3).*

Zagoruchenko, V. A. and Zhuravlev, A. M.,

Thermophysical Properties of Gaseous and

Liquid Methane, published by the Committee

of Standards, Measures and Measuring Instru- ments of the U.S.S.R. Council of Ministers — Government Standards Service, 1971

($3).* Esel'son, B. N., et al., Properties of Liquid

and Solid Hydrogen, published by the Committee of Standards, Measures and Measuring In- struments of the U.S.S.R. Council of Ministers — Government Standards Service, 1971

(S3).* Gurevich, V. M., Electric Conductivity of

Ferroelectrics, published by the Committee of Standards, Measures and Measuring Instruments

of the U.S.S.R. Council of Ministers — Govern- ment Standards Service, 1971 (S6).* Ivan'ko, A. A., Handbook of Hardness Data

(Edited by G. V. Samsonov), published by Academy of Sciences of the Ukrainian SSR, Institute of Materials Sciences, 1971 (S3).*

'Available from National Technical Information Service, Springfield, Va. 22151. **AvuiIable from the American Chemical Society, 1155 16lh Street, NW., Washington. D.C. 20036.

71
PUBLICATIONS IN PRESS

Journal of Physical and Chemical Reference Data

Issue 3

High-Pressure Calibration—A Critical Review

Molten Salts, Vol. 3. Nitrates, Nitrites

and Mixtures: Electrical Conductance , Density, Viscosity and Surface Tension

Data

D. L. Decker, W. A. Bassett

L. Merrill, H. T. Hall and

J. D. Barnett

G. J. Janz, H. F. Siegenthaleij

and R. P. T. Tomkins

High Temperature Properties and

Decomposition of Inorganic Salts , Part 3. Nitrates and Nitrites

K. H. Stern

Issue 4

The Surface Tension of Liquids

Calculated Values for Viscosity and

Thermal Conductivity Coefficients

of Gaseous and Liquid Fluorine

Osmotic Coefficients and Mean

Activity Coefficients of Uni-Univalent

Electrolytes in Water at 25°C

Microwave Spectra of Molecules of

Astrophysical Interest . I. Formaldehyde, Formadine, and

Thioformaldehyde

J. J. Jasper

H. J. M. Hanley and

R. Prydz

W. J. Hamer and Y. C. Wu

D. R. Johnson, F. J. Lovas

and W. H. Kirchhoff

Information on subscriptions and purchase of copies of individual

articles may be obtained from American Chemical Society, 1155 Sixteenth

Street, N. W. , Washington, D. C. 20036

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1. PUBLICATION OR REPORT NO. NBS TN-747,

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3. Recipient's Accession No.

4. TITLE AND SUBTITLE

Critical Evaluation of Data in the Physical Sciences —

A Status Report on the National Standard Reference

Data System June 1972

5. Publication Date November 1972

6. Performing Organization Code

7. AUTHOR(S)

Stephen A. Rossmassler, Editor

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