NBS

PUBLICATIONS

NBSIR 88-3699

A 11 IDE 7S3ED1

Technical Activities 1987

Surface Science Division

C. J. Powell, Chief

U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards

National Measurement Laboratory

Center for Chemical Physics

Surface Science Division

Gaithersburg, MD

January 1988

Prepared for:

QC "ARTMENT of commerce

Bureau of Standards

iUU burg, MD 20899

U56

88-3699

1988

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NBSIR 88-3699

TECHNICAL ACTIVITIES 1987

SURFACE SCIENCE DIVISION

Research Information Center

National bureau of Standards

Gaithersburg, Maryland 20899

C. J. Powell, Chief

U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards

National Measurement Laboratory

Center for Chemical Physics

Surface Science Division

Gaithersburg, MD 20899

January 1988

Prepared for: U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards

Gaithersburg, MD 20899

U.S. DEPARTMENT OF COMMERCE, C. William Verity, Secretary

NATIONAL BUREAU OF STANDARDS, Ernest Ambler, Director
-
ABSTRACT

This report gives a brief summary of the technical activities conducted in

the NBS Surface Science Division during Fiscal Year 1987. These activities

include surface -standards work, experimental and theoretical research in

surface science, the development of improved measurement methods, and applications to important scientific and national problems. Listings are given of

publications, talks, Division staff, and guest scientists.

key words: surface chemistry; surface physics; surface science; surface

standards
FOREWORD

This report is a brief summary of the technical activities of the NBS

Surface Science Division for the period October 1, 1986 to September 30, 1987.

The report was prepared as part of the Annual Report of the Center for Chemical

Physics within the National Measurement Laboratory of NBS.

Section 1 of the report contains narrative descriptions of technical

projects within three program areas: surface standards, surface measurements,

and surface competence. Sections 2 and 3 contain listings of papers published

and talks presented during the year. The Division staff are listed in section

4 and guest scientists who have worked in the Division in section 5.

Further information on the activities of the Division can be obtained by

contacting Dr. C. J. Powell, Chemistry B-248, National Bureau of Standards,

Gaithersburg, MD 20899 (telephone, 301-975-2534).

NOTE: Certain commercial equipment, instruments, or materials are identified

in this report in order to adequately specify the experimental procedure. Such

identification does not imply recommendation or endorsement by the National

Bureau of Standards, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
TABLE OF CONTENTS

Page

ABSTRACT . ....... i

FOREWORD ii

1. SUMMARY OF TECHNICAL WORK ....... 1

(a) Introduction ...................... 1

(b) Surface Standards Program ................ 1

(c) Surface Measurements Program ....... 2

(d) Surface Competence Program ......... 3

2. PUBLICATIONS 6

3. TALKS 11

4. SURFACE SCIENCE DIVISION STAFF ........... 20

5. GUEST SCIENTISTS 21
'
1. SUMMARY OF TECHNICAL WORK

(a) Introduction

Over the last ten years, there has been a dramatic growth in surface

science and its applications. A large number of techniques are utilized for

surface characterization. A choice of one or more techniques is made typically

on the basis of the property to be measured, the specimen material, and the

specific needs (e.g., spatial resolution, chemical information, sensitivity,

degree of difficulty, and cost). Most surface analyses, for example, are now

qualitative since there are very few standard procedures and limited reference

data and reference materials.

The goal of the Surface Science Division is to improve the quality of

existing surface-characterization measurements and to extend the present capability. Specific objectives of the Division are to: perform research so as to

develop improved methodologies; provide data for surface properties and

processes; develop standards in cooperation with relevant organizations; and

develop expertise to provide new measurement services. These objectives are

met organizationally through three formal NBS programs: surface standards,

surface measurements, and surface competence. This report contains brief

descriptions of work conducted during 1987 in these three programmatic areas;

further information on. these activities is contained in a more detailed

Division report prepared in 1986 (Technical Activities 1986 - Surface Science

Division, C. J. Powell, editor, NBSIR 86-3491, December, 1986).

(b) Surface Standards Program

The Division improves the quality of surface measurements through the

development of reference data, reference materials, and reference procedures.

New calculations have been made of inelastic electron mean free paths in

thirty-one materials in the energy range important for quantitative surface

analyses by Auger-electron spectroscopy and x-ray photoelectron spectroscopy

(XPS) . From these calculations, a general formula has been developed to predict inelastic mean free paths in other materials. New measurements of electron

attenuation lengths are being made in a number of molecular solids using an

improved measurement method developed at NBS. High-accuracy measurements have

been made of core-electron binding energies for copper, silver, and gold and

found to correspond, within the combined uncertainties, with independent

measurements at the UK National Physical Laboratory. These data will be useful

for the calibration of XPS energy scales. Work is nearing completion on a compilation and evaluation of elemental sputtering yields, data important for

the calibration of the depth scales when ion bombardment is used with surface

analysis to obtain depth profiles.

A new batch of the Ni/Cr multi-layer thin-film SRM 2135 has been

characterized and will be issued shortly. A new "marker" type of multilayer

material consisting of about 3 ML of Cr2 03 between much thicker Cr layers is

under development. Sputter-depth profiles of Ni/Ag multi-layered thin-film

structures have broad interfaces when measured at room temperature on account

of radiation-enhanced diffusion. When measured above 130°C, however, the

1
profiles are much sharper due apparently to the annealing of bombardmentproduced defects.

The Division provides leadership to standards committees, particularly to

ASTM Committees E-42 on Surface Analysis and D-32 on Catalysts and to the

Surface Chemical Analysis Working Party of the Versailles Project on Advanced

Materials and Standards (VAMAS) . The latter group is an international cooperation involving the USA, Canada, UK, FRG, France, Italy, Japan, and the European

Economic Community; at present, 12 projects are underway and others are

expected to be initiated. Liaison is made between this VAMAS group, the ASTM

E-42 Committee, and an active IUPAC Working Group on Surface Analysis.

Finally, workshops and conferences have been organized to promote the development of needed reference procedures in surface analysis.

(c) Surface Measurements Program

The Division undertakes a number of projects directed to improved

determinations of surface properties and processes. New techniques are

developed along with theories of the measurement processes. Applications to

important scientific and national problems are pursued. One area of importance

concerns the "high- temperature" superconductivity materials which have caused

great excitement in the scientific community as well as interest by the administration during the past year. In collaboration with scientists at NRL,

Division staff made the first measurements of the photoelectron spectra of

YBa2 Cu3 07 to compare with electronic structure calculations. The measurements

showed two unexpected results: the density of states at the Fermi level was

small and the Cu was in the +2 oxidation state with no evidence for the +3

state

In another area, measurements are made of the reaction kinetics and the

structures of molecules on single-crystal surfaces to understand heterogeneous

catalytic chemistry. In preliminary experiments, monolayer films of platinum

have been deposited on a W(110) surface and shown to have chemisorption

properties quite different from those of clean tungsten or platinum surfaces

alone. This work will be extended to search for unusual catalytic activity of

the Pt/W system. Division staff have constructed a novel digital- imaging

instrument to give direct information on the structure of adsorbed molecules

using the NBS-developed Electron Stimulated Desorption Ion Angular Distribution

method. This instrument has been used to investigate the interactions of the

first-row protic hydrides (H2 0, NH3 , and HF) with both stepped and planar

Si (100) surfaces. All molecules adsorb dissociatively between 125 and 300 K

and structures of the adspecies on both types of silicon surfaces have been

determined. Similar measurements have been made to investigate the orientation

of H2 0 on a Cu(110) surface; at 90 K, H2 0 adsorbs molecularly with tendency to

cluster into hydrogen-bonded dimers. In related work, inelastic incoherent

neutron scattering has been employed to characterize the adsorption and

absorption of hydrogen by palladium black, a high-surface-area Pd powder.

These experiments at the NBS reactor have shown the presence of subsurface

hydrogenic species in addition to the expected bulk and surface phases.

2
Synchrotron radiation is used in a number of Division projects (at both

the NBS SURF facility and the Brookhaven National Synchrotron Light Source)

.

In addition to the experiments on the superconducting materials mentioned

earlier, investigations have been made of the interaction of H2 0 with

Ti02 (llO)surfaces , in one case with a near-perfect surface and in another case

with a surface having numerous defects. The reactivity of H2 0 was greater on

the "defective" Ti02 surface which was shown to have traces of Ti3+

, Ti2+, and

metallic Ti whereas the more perfect surface was almost completely TiA+

. Molecular dynamics calculations have been made to give a better understanding

of the effects of defect structures on particular surface properties. In other

experiments, a new mechanism was found for the photon- stimulated desorption of

ions from an MgO surface: core-exciton- induced desorption. This and other

mechanisms of surface decomposition are important in establishing rates of beam

damage in other surface spectroscopies. Recent collaborative work at the

Cornell synchrotoron has shown that chemisorbed monolayers can be detected

using glancing- incidence x-ray diffraction to excite transverse x-ray standing

waves. Finally, improved devices have been developed in which a photovoltaic

x-ray detector has been fabricated on a silicon monochromator crystal; such

devices are efficient and useful for instrumental alignment.

The pathways and rates of energy transfer at surfaces remain key unresolved issues for understanding chemical reactions at interfaces. In

cooperation with the Laser Spectroscopy Group, the Division utilizes both the

temporal and spectral characteristics available in state-of-the-art lasers to

address the issues of energy transfer on surfaces. Laser-excited fluorescence

along with multi-photon ionization are used as state-specific probes of laserinduced desorption processes. Investigations of the desorption of NO from Pt

surfaces have shown that there is non-equilibrium partitioning of kinetic and

internal energy at all laser wavelengths studied. This result indicates that

the desorption does not occur through a NO resonance but through a coupling

with the substrate, perhaps involving electron-hole pair excitations. In other

experiments, vibrational lifetimes have been measured on a series of metalcluster carbonyls in solution and for metal particles on Si02

. Complementary

theoretical studies are being made to elucidate the roles of quasi-periodic

versus chaotic intramolecular dynamics as applicable in molecule-surface

collisions and in surface vibrational spectroscopies. Another theoretical

study has demonstrated that chemical selectivity can be obtained in the

scattering of polyatomic molecules by surfaces.

(d) Surface Competence Program

The Surface Competence Program (initiated in 1984) has two components:

"Novel Two-Dimensional Materials" and "State Characterization of Energetic

Species Ejected from Surfaces". The objective of the first component is to

synthesize and determine the fundamental chemical properties of ultrathin

layered materials with layers so thin (a few atoms thickness) that they exhibit

two-dimensional behavior. The objective of the second component is to understand the excitation dynamics by which atoms and molecules are desorbed from

surfaces in ion- sputtering processes as well as in electron- and photonstimulated processes. Each program component consists of several technical

proj ects

.

3
Within the first program component, the x-ray photoelectron spectroscopy

(XPS) searchlight effect has been applied to the characterization of the growth

modes of ultra-thin metal films. Superlattice structures consisting of Cu and

Fe layers on Cu(100) have been successfully prepared with film thicknesses of

1, 2, and 3 monolayers and atomically sharp interfaces. These structures have

been found to have novel magnetic properties: the Fe layers are ferromagnetic

and the magnetic moment is perpendicular to the film plane with a large

anisotropy. In other experiments, the XPS searchlight effect has been used to

study the initial stages of Schottky barrier formation when Ni is deposited on

GaAs(llO); it was found that Ni replaced both Ga and As in the second and third

atomic layers beneath the surface. A second- generation design has been developed for the ovens that generate ultra- thin metal films by molecular beam

epitaxy. The new ovens are both simple, compact, and effective. Four such

ovens are being mounted on a single flange and will be used to fabricate nonequilibrium ordered alloys, a new class of materials, by alternating monolayer

deposition. An auxiliary vacuum chamber has also been constructed to perform

Mossbauer spectroscopy on superlattice structures containing iron films using

an electron multiplier to detect the conversion electrons.

In a separate project, the microstructure of YBa2 Cu3 Q7

_ x (0<x<0.5) has

been examined by field- ion microscopy (FIM) . Specimens from nominally superconducting and nonsuperconducting samples (determined by magnetic susceptibility measurements) were studied by FIM and significant differences were

found. Preferential imaging of atomic or molecular layers, due to preferential

field evaporation, field .ionization, or both, was found in the superconducting

phase below the transition temperature, and is interpreted as possible evidence

for the occurrence of relatively highly conducting layers in the YBa2 Cu3 07 _ x unit cell perpendicular to the orthorhombic c-axis.

The nucleation and growth of crystalline layers of Cr on W and of Cr on Re

has been studied using field-electron emission microscopy. Two different modes

of nucleation on W(100) were found to occur at room temperature, depending only

on the angle of incidence of the Cr flux. In separate work, it has been

demonstrated that the field- ion microscope atom probe can measure compositional

changes and impurity distributions at metal-metal interfaces with monolayer

resolution.

Theoretical contributions have been made to the understanding of the

fractional quantum Hall effect. A particular type of off-diagonal long-range

order has been shown to lead to the fractional quantum Hall effect. This

result extends the analogies previously found between superconductivity and

superfluidity; both types of systems have dissipationless transport because of

a remarkably low density of excited states at low energies.

Within the second program component, new instrumentation has been designed

and built to determine the energy states of sputtered neutral particles by

resonant multiphoton ionization and time-of-flight mass spectrometry. Following tests, improvements have been made to reduce the neutral and doubly- ionized

components in the ion beam to insignificant levels. The incident Ar+ beam is

rapidly switched and a 38 ns plus width has been obtained. The instrument has

been interfaced to a computer that also displays time-of-flight spectra and

kinetic-energy distributions. This instrumentation will be used to determine

4
the energy states of neutral species sputtered from Al and Mg surfaces by

resonance- ionization mass spectrometry.

In another project, a special angle-resolving, display-type ion and

electron energy analyzer has been constructed and is undergoing testing. This

analyzer will be installed at the NBS synchrotron radiation facility SURF-II to

measure simultaneously the angular, energy, and mass distributions of ions

desorbed from surfaces by photon or electron excitation. Special videoprocessing software for manipulating and displaying the data is being developed

as is software for controlling voltages applied to the instrument. The

instrument will be employed to examine the desorption dynamics of adsorbed

molecules

.

5
2. PUBLICATIONS

Bange , K. , Madey, T. E. and Stuve, E. M. , "Summary Abstract: Coadsorption

of Water and Oxygen on Ag(110): A Study of the Interactions Among

H2 0, OH, and 0," J. Vac. Sci. Tech. A 5, 954 (1987).

Bange, K. , Stuve, E. M. , Madey, T. E. and Sass, J. K. , "The Adsorption of

Water and Oxygen on Ag(110): A Study of the Interactions Among Water

Molecules, Hydroxyl Groups, and Oxygen Atoms," Surface Sci. 183 . 334

(1987).

Cavanagh, R. R. , Casassa, M. P. , Heilweil, E. J., and Stephenson, J. C.,

"Vibrational Relaxation of Adsorbed Molecules: Comparison with

Relaxation Rates of Model Compounds," J. Vac. Sci. Tech. A 5,

469 (1987).

Cavanagh, R. R. , Rush, J. J. and Kelley, R. D. , "Incoherent Inelastic

Neutron Scattering: Vibrational Spectroscopy of Adsorbed Molecules

on Surfaces," Vibrational Spectroscopy of Molecules . J. T. Yates, Jr.

and T. E. Madey, eds . , p. 183 (1987).

Cowan, P. L. , Brennan, S., Jach, T. , Bedzyk, M. J. and Materlik, G.

"Observations of the Diffraction of Evanescent X-Rays at a Crystal

Surface," Phys . Rev. Letters 57, 2399 (1986).

Egelhoff , Jr. , W. F. , "Core-Level Binding -Energy Shifts in Solids and at

Surfaces," Surface Science Reports 6, 253 (1987).

Egelhoff, Jr. W. F. , "XPS and Auger Forward Scattering in Epitaxial Films,"

Physics News Section of Physics Today, January, 1987, p. S - 6 9

Egelhoff, Jr., W. F. , "Summary Abstract: The Importance of Multiple Scattering

in XPS and Auger Electron Diffraction," J. Vac. Sci. Tech. A 5, 1684

(1987).

Egelhoff, Jr. , W. F. , "Role of Multiple Scattering in X-Ray Photoelectron and

Auger-Electron Diffraction in Crystals," Phys. Rev. Letters 59, 559

(1987).

Egelhoff, Jr., W. F. , "Summary Abstract: Heats of Adsorption of Atomic C, N,

and 0 on Ni(100) and Cu(100) from a (Z+l) Core-Level Shift Analysis,"

J. Vac. Sci. Tech. A 5, 700 (1987).

Erickson, N. E. , Powell, C. J. and Ramaker, D. E. , "New Correlation Effects

Observed for Inner-Shell Excitations in Titanium and Vanadium," Phys.

Rev. Lett. 58, 507 (1987).

Gadzuk, J. W. , "Role of Site Conversion in Vibrational Spectroscopy of Adsorbed

Molecules," J. Opt. Soc. Am. B 4, 201 (1987).

6
Gadzuk , J. W. , "Anisotropic Change Transfer Rates in the Scattering of Oriented

Atoms or Molecules from Surfaces," Surface Sci. 180 , 225 (1987).

Gadzuk, J. W. , "Vibrational Excitation in Molecule-Surface Collisions:

Analytical Modeling vs. Classical Trajectories," J. Chem. Phys . 86., 5196

(1987).

Gadzuk, J. W. , "Core Level Spectroscopy: A Dynamics Perspective," Physica

Scripta 35. , 171 (1987).

Gadzuk, J. W. , "Intramolecular Dynamics in Molecule-Surface Collisions:

Excitation, Dissociation, and Selectivity of Reactivity, Surface Sci.

184 . 483 (1987).

Gadzuk, J. W. , "Dynamics of Dissociative Adsorption and Vibrational Excitation

in Molecule-Surface Collisions," J. Vac. Sci. Tech. A .5 , 492 (1987).

Gadzuk, J. W. , "Selectivity of Elementary Molecular Processes in MoleculeSurface Collisions, Chem. Phys. Letters. 136 . 402 (1987).

Gadzuk, J. W. , "Excitation Mechanisms in Vibrational Spectroscopy of Molecules

on Surfaces," Vibrational Spectroscopy of Molecules . J. T. Yates, Jr. and

T. E. Madey, eds . , p. 49 (1987).

Gadzuk, J. W. and Holloway, S., "Dynamics of Molecular Collisions with

Surfaces: Excitation, Dissociation, and Diffraction," Nucl. Instr. &

Meth. B 27, 37 (1987).

Girvin, S. M. , "Theoretical Aspects of the Quantum Hall Effect," Proc . Nat.

Acad. Sci. 84, 4698 (1987).

Girvin, S. M. and MacDonald, A. H. , "Off-Diagonal Long-Range Order, Obliqe

Confinement and the Fractional Quantum Hall Effect," Phys. Rev. Lett.

58, 1252 (1987).

Heilweil, E. J., Casassa, M. P. , Cavanagh, R. R. and Stephenson, J. C.,

"Population Lifetimes of 0H(v=l) and 0D(v=l) Vibrations in Alcohols,

Silanols and Crystalline Micas," Springer Series in Chemical Physics,

Vol. 46: Ultrafast Phenomena V, G. R. Fleming and A. E. Siegman, eds.,

Springer-Verlag, p. 465 (1986).

Heilweil, E. J., Casassa, M. P. , Cavanagh, R. R. and Stephenson, J. C.,

"Population Lifetimes of 0H(v=l) and 0D(v=l) Stretching Vibrations of

Alcohols and Silanols in Dilute Solution," J. Chem. Phys. 85., 5004

(1986)

Heilweil, E. J., Cavanagh, R. R. and Stephenson, J. C., "Population Relaxation

of C0(v=l) Vibrations in Solution Phase Metal-Carbonyl Complexes," Chem.

Phys. Lett. 134, 181 (1987).

7
Holloway, S., Karikorpi, M. and Gadzuk, J. W. , "Dynamics of Molecular

Collisions with Surfaces: Excitation, Dissociation, and Diffraction,"

Nucl . Instr. & Meth. B 27, 37 (1987).

Jach, T. , Kirkland, J. P. , Wolf, P. D. and Neiser, R. A., "A Harmonic Rejection

Scheme for X-ray Monochromators," Nucl. Instr. & Meth. A 257 . 443 (1987).

Jones, T. S., Holloway, S. and Gadzuk, J. W. , "Theoretical Study of the

Vibrational Lineshape for CO/Pt(lll)," Surface Sci. 184 . L421 (1987).

King, D. S. and Cavanagh, R. R. , "Final-State Resolved Studies of MoleculeSurface Interactions," in Chemistry and Structure at Interfaces . New

Laser and Optimal Techniques, VCH Publishers, Deerfield Beach, FL,

p. 25 (1986).

Kurtz, R. L. , "Stimulated Desorption Studies of Defect Structures on Ti02

,

Surface Sci. 177 . 526 (1986).

Kurtz, R. L. , "The Influence of Surface Structure on Ion Emission from Ti02

,

J. Vac. Sci. Tech. A 4, 1248 (1986).

Kurtz, R. L. , Stockbauer, R. , Mueller, D. , Shih, A., Toth, L. , Osofsky, M.

and Wolf, S., "Resonant Photoemission Study of Superconducting Y-Ba-Cu0," Phys . Rev. B, Rapid Communications 35., 8818 (1987).

Kurtz, R. L. , Stockbauer, R. , Nyholm, R. , Flodstrdm, S. A., and Senf, R.

"Photon-Stimulated Desorption Induced by Core Exciton States in MgO," J.

Vac. Sci. Tech. A5, 1111 (1987).

Kurtz, R. L. , Stockbauer, R. , Nyholm, R. , Flodstrdm, S. A., and Senf, F.

"Core Exciton Induced Desorption from MgO," Phys. Rev. B, Rapid Communications 3J5, 7794 (1987).

Larsson, C. U. S., Johnson, A. L. , Flodstrfim, A., and Madey, T. E. , "Structure

of H2 0 Adsorption on Planar and Stepped Si (100) 2x1," J. Vac. Sci. Tech. A

5, 842 (1987) .

Madey, T. E. , "Electron and Photon Stimulated Desorption: Probes of Structure

and Bonding at Surfaces," Science 234 . 316 (1986).

Madey, T. E. , "Mechanisms and Applications of Electron Stimulated Desorption in

Surface Science," Vacuum TAIP 37, 31 (1987).

Madey, T. E. , "Summary Abstract: Coadsorption of Water and Oxygen on Ag(110):

A Study of the Interactions Among H2 0, OH, and 0," J. Vac. Sci. Tech. A

5, 954 (1987).

Madey, T. E., Benndorf, C., and Semancik, S., "Influence of Electronic and

Geometric Structure on Desorption Kinetics of Isoelectronic Polar

Molecules: NH3 and H2 0," Kinetics of Interface Reactions . Springer

Series in Surface Science 8, Springer-Verlag , Heidelberg, p. 175, (1987).

8
Marton, D. and Fine, J., "On the Develpment of Increasing Surface Roughness

During Ion Sputtering," Thin Solid Films 151 , 433 (1987).

Melmed, A. J., "Field Emission Microscopy - Trends and Perspectives," in

Chemistry and Physics of Solid Surfaces VI, R. Vangelow and R. Howe,

eds . , Springer-Verlag, Berlin, p. 325 (1986).

Melmed, A. J., "Progress in Understanding Atomic Structure of the Icosahedral

Phase," J. de Physique 47, C7-35 (1986).

Melmed, A. J., Schmidt, W. A., Block, J. H. , Naschitzki, M. and Lovisa, M.

,

"Effects of a Gold Shank-Over layer on the Field Ion Imaging of Silicon,"

J. de Physique 47, C7-333 (1986).

Melmed, A. J., Maurice, V., Frank, 0. and Block, J. H. , "BCC and FCC Forms of

Eu Epitaxially Grown on Re Surfaces," J. Crystal Growth 84, 123 (1987).

Navinsek, B. and Fine, J., "Sputter Deposition of Multilayered Structures for

Use in Sputter Depth Profile Calibration," Vacuum 36, 711 (1986).

Oji, H. C. A., MacDonald, A. H. and Girvin, S. M. , "Superlattice Magnetoroton

Bands," Phys . Rev. Lett. .58, 824 (1987).

Perera, R. C. C., LaVilla, R. E. , Cowan, P. L. , Jach, T. and Karlin, B.,

Cl K/3 (K-V) Emission of CFC1 3 Excited by Synchrotron Radiation Below and

Above Cl -Is Binding Energy: Perturbation Effects in a Highly Excited

Neutral Molecule," Physica Scripta 36., 132 (1987).

Powell, C. J., "Progess of the VAMAS Surface Chemical Analysis Working Party,"

VAMAS Bulletin, No. 6, July, 1987, p. 1.

Powell, C. J., "The Energy Dependence of Electron Inelastic Mean Free Paths,"

Surf. Interface Anal. 10, 349 (1987).

Powell, C. J., "Reference Materials, Reference Data, and Reference Procedures

for Surface Analysis: National and International Standards Activities,"

in Electronic Materials and Processes . N. H. Kordsmeier, C. A. Harper and

S. M. Lee, eds., Society for the Advancement of Material and Process

Engineering, Covina, CA, p. 252, (1987).

Powell, C. J., editor, "Technical Activities 1986 - Surface Science Division,"

NBSIR 86-3491.

Prange , R. E. and Girvin, S. M. , editors, " The Quantum Hall Effect ." SpringerVerlag, New York, Heidelberg, (1986).

Semancik, S., Doering, D. L. and Madey, T. E. , "Coadsorption of Water and

Lithium on the Ru(001) Surface," Surface Sci. 176 . 165 (1986).

Shinn, N. D. and Madey, T. E. , "Oxygen Chemisorption on Cr(110): I. Dissociative Adsorption," Surface Sci. 173 . 379 (1986).

9
Shinn, N. D. and Madey, T. E. , "Oxygen Chemisorption on Cr(110): II. Evidence

for Molecular 02 (ads)," Surface Sci. 176 . 635 (1986).

Shinn, N. D. and Madey, T. E. , "Stimulated Desorption from CO Chemisorbed

on Cr(110)," Surface Sci. 180 . 615 (1987).

Shinn, N. D. and Szuromi, P. , "Alkali Interactions over Cu(311)," J. Vac. Sci.

Tech. A 5, 796 (1987)

Stockbauer, R. , "Ion Desorption from Surfaces," Ultraviolet Synchrotron

Orbital Radiation Activity Report 1986, for Molecular Science, Okazaki

National Research Institutes, Okazaki, Japan, 14, 87 (1987).

Szuromi, P. D. , Kelley, R. D. and Madey, T. E. , "The Influence of Sulfur on

Methanation on W(110)," J. Phys . Chem. 90, 6499 (1986).

Szuromi, P. D. , Kelley, R. D. , and Madey, T. E. , "Summary Abstract: The

Influence of Sulfur on Methanation over W(110)," J. Vac. Sci. Tech. A 5

867 (1987).

Tanovic, N. , Tanovic , L. , Backovic , N. , Zalar, A. and Fine, J., "Interface

Broadening and Topography of Auger Sputter Profilesd Cr/Ni Interfaces,"

Proceedings of Contributed Papers. Symposium on the Physics of Ionized

Gases . M. V. Kurepa, ed. , University of Beograd, Belgrade,

Yugoslavia, p. 269, (1986).

Thiel, P. A. and Madey, T. E. , "The Interaction of Water with Solid Surfaces:

Fundamental Aspects," Surface Sci. Rep. 7, 211 (1987).

Udovic , T. J. and Kelley, R. D. , "Neutron Scattering Studies of Hydrogen in

Catalysts," in Hydrogen in Catalysis: Theoretical and Practical

Aspects . Z. Paal and P. G. Menon, eds . , Marcel Dekker, Inc., New York,

NY, p. 167 (1987).

10
3 . TALKS

Cavanagh, R. R. , "Time Resolved Laser Probes of Surface Dynamics,"

International Laser Science Conference, Seattle, WA, October 21, 1986.

Cavanagh, R. R. , "Vibrational Relaxation of Adsorbed Molecules," American

Vacuum Society Meeting, Baltimore, MD, October 27, 1986.

Cavanagh, R. R. , "Energy Transfer and Chemical Bonds: Laser Probes of

Molecular Dynamics, Air Force Office of Scientific Research, Bolling Air

Force Base, Washington, DC, March 11, 1987.

Cavanagh, R. R. , "Dynamics of Laser Driven Thermal Desorption: Internal

States Distributions Induced by Laser Heating Pulses," American

Chemical Society Meeting, Denver, CO, April 6, 1987.

Cavanagh, R. R. , "Energy Transfer and Chemical Bonds: Laser Probes of

Molecular Dynamics," E. I. duPont deMours & Company, Inc., Wilmington,

DE, April 21, 1987.

Cavanagh, R. R. , "Vibrational Relaxation Rates and Mechanisms: Surfaces and

Model Compounds," IBM, San Jose, CA, June 26, 1987.

Cavanagh, R. R. , "Laser Induced Desorption: LEF Evidence for Non-Thermal

Channels," Physical Electronics Conference, Monterey, CA, June 29, 1987.

Cavanagh, R. R. , "Time-Domain Measurements of Vibrational Relaxation at

Surfaces," Chemistry Department, University of East Anglia, Norwich,

England, August 31, 1987.

Cavanagh, R. R. , "Time-Domain Measurements of Vibrational Relaxation at

Surfaces, Fifth International Conference on Vibrations at Surfaces,

Garmisch, W. Germany, September 8, 1987.

Cavanagh, R. R. , "Time Resolved Vibrational Relaxation: CO on Supported Metal

Clusters and in Model Cluster Compounds," Air Force Office of Scientific

Research Contractor's Meeting, Air Force Academy, Colorado Springs, CO,

September 17, 1987.

Demmin, R. A., "Adsorption Properties of Pt Films on W(110)," American Chemical

Society Meeting, New Orleans, LA, August 31, 1987.

DeWeert, M. J., "Nonequilibrium Tunneling Through Ferromagnetic Barriers,

American Physical Society Meeting, New York, NY, March 20, 1987.

DeWeert, M. , Equilibrium and Nonequilibrium Pairbreaking at Interfaces with

Ferromagnetic Insulators," Novel Mechanisms of Superconductivity Conference, Berkeley, CA, June 23, 1987.

11
Egelhoff, Jr.

W. F."Angle -Resolved XPS and AES Studies of the Structure of

Crystal Surfaces," Physics Department, University of Wisconsin-Milwaukee

Milwaukee, WI , October 8, 1986.

Egelhoff, Jr.

W. F.

"Angle-Resolved XPS and AES Studies of the Structure of

Crystal Surfaces," Chemistry Department, University of Wisconsin,

Madison, WI , October 9, 1986.

Egelhoff, Jr.

W. F.

Angle-Resolved XPS and AES Studies of the Structure of

Crystal Surfaces," Chemistry Department, Northwestern University,

Evanston, IL, October 10, 1986.

Egelhoff, Jr.

W. F."The Relative Importance of the Major Factors Contributing to the Angular Variation of Intensities in XPS and AES of Crystals," American Vacuum Society Meeting, Baltimore, MD, October 27, 1986.

Egelhoff, Jr., W. F.

"A Born-Haber Cycle, Core-Level Shift Analysis of Atomic

C, N, and 0 on Ni(100)," American Vacuum Society Meeting, Baltimore, MD,

October 31, 1986.

Egelhoff, Jr., W. F.

"Core-Level Binding- Energy Shifts: Introduction and

Basics," Simon Fraser University, Vancouver, Canada, November 12, 1986.

Egelhoff, Jr., W. F.

"Core-Level Binding- Energy Shifts: Theoretical Background and Experimental Case Studies," Physics Department, Simon Fraser

University, Vancouver, Canada, November 12, 1986.

Egelhoff, Jr., W. F."Core-Level Binding- Energy Shifts: Selected Advanced

Topics," Physics Department, Simon Fraser University, Vancouver, Canada,

November 12, 1986.

Egelhoff, Jr., W. F.

"Core-Level Binding- Energy Shifts: Selected Advanced

Topics," Physics Department, Simon Fraser University, Vancouver, Canada,

November 12, 1986.

Egelhoff, Jr., W. F.

"XPS Forward Scattering Studies of Epitaxial Structures,"

Simon Fraser University, Vancouver, Canada, November 13, 1986.

Egelhoff, Jr.W. F.

"Structural Characterization of Thin Overlayers by XPS

and AES Forward Scattering," Materials Research Society Meeting, Boston,

MA, December 4, 1986.

Egelhoff, Jr., W. F.

"The Importance of Multiple Scattering in XPS and Auger

Diffraction in Crystals," American Physical Society Meeting, New York,

NY, March 17, 1987.

Egelhoff, Jr.

W. F."A (Z+l) Core-Level Shift Analysis of the Adsorption of

Atomic C, N, and 0 on Ni(100) and Cu(100)," American Physical Society

Meeting, New York, NY, March 18, 1987.

Egelhoff, Jr.W. F.

"XPS Forward Scattering Studies of Ultrathin Film

Growth," American Vacuum Society Meeting, Detroit, MI, May 28, 1987.

12
Fine, J., "Computer Analysis of Auger-Depth Profiles," Workshop on Quantitative

Surface Analysis, National Bureau of Standards, Gaithersburg, MD, October

24, 1986.

Fine, J., "Collisionally Excited Auger Electron Emission from Al(100):

Dependence on Azimuthal Orientation," American Vacuum Society Meeting,

Baltimore, MD, October 27, 1986.

Fine, J., "Reference Materials for Surface Analysis," University of Dayton,

Dayton, OH, June 3, 1987.

Gadzuk, J. W. , "Dynamics of Dissociative Adsorption and Associative

Desorption," American Vacuum Society Meeting, Baltimore, MD, October

28, 1986.

Gadzuk, J. W. , "Charge Transfer in Molecular Scattering from Studies," Montana

State University, Bozeman, MT, November 17, 1986.

Gadzuk, J. W. , "Exciting Vibrations at Surfaces," University of Washington,

Seattle, WA, November 19, 1986.

Gadzuk, J. W. , "Selectivity of Elementary Molecular Processes: Coherent

2-photon Processes Vs. Surface Scattering," IMB Almaden Research Laboratory, San Jose, CA, November 21, 1986.

Gadzuk, J. W. , "Intra-Molecular Dynamics in Molecule Surface Collisions," MaxPlanck-Institut , Gottingen, W. Germany, January 23, 1987.

Gadzuk, J. W. , "Fundamentals of Surfaces," Tata Institute of Fundamental

Research, Lonayla, India, January 27, 1987.

Gadzuk, J. W. , "Easy Modeling in Time-Dependent Quantum Mechanics," Tata

Institute of Fundamental Research, Lonayla, India, January 28, 1987.

Gadzuk, J. W. , "Exciting Vibrations at Surfaces: Spectroscopy," Tata

Institute of Fundamental Research, Lonayla, India, January 29, 1987.

Gadzuk, J. W. , "Exciting Vibrations at Surfaces: Molecular Scattering,"

Tata Institute of Fundamental Research, Lonayla, India, January 30, 1987.

Gadzuk, J. W. , "Dynamics of Dissociative Adsorption and Scattering," American

Physical Society Meeting, New York, NY, March 19, 1987.

Gadzuk, J. W. , "Selectivity of Elementary Processes in Molecular Surface

Collisions," Dynamics of Molecular Collisions Conference, Wheeling, WV,

July 14, 1987.

Gadzuk, J. W. , "Molecular Scattering and Vibrational Spectroscopy at Surfaces:

A Dynamic Symbiosis," Fifth International Conference on Vibrations at

Surfaces, Garmisch, W. Germany, September 10, 1987.

13
Girvin, S., "Off-Diagonal Long Range Order, Oblique Confinement and the

Fractional Quantum Hall Effect," Physics Department, University of

Minnesota, Minneapolis, MN, November 13, 1986.

Girvin, S., "The Quantum Hall Effect," Physics Department, Virginia

Commonwealth University, Richmond, VA, November 18, 1986.

Girvin, S., "The Fractional Quantum Hall Effect: Fractionally Charged

Vortices, Electrons and Bosons and Other Mysteries," Physics Department,

Colloquium, Indiana University, Bloomington, IN, January 21, 1987.

Girvin, S., "Introduction to Replica Field Theory Methods for Random

Systems," National Research Council of Canada, Ottawa, Canada,

February 9, 1987.

Girvin, S., "Off-Diagonal Long Range Order in the Fractional Quantum Hall

Effect," American Physical Society Meeting, New York, NY, March 20, 1987.

Girvin, S., "Theoretical Aspects of the Quantum Hall Effect," National Academy

of Sciences, Washington, DC, March 24, 1987.

Girvin, S., "The Fractional Quantum Hall Effect: Fractionally Charged

Vortices, Electrons as Bosons and Other Mysteries," Yale University, New

Haven, CT, April 6, 1987.

Jach, T. , "Observation of Whisker Growth on Gold Thin Films using Reflection

Electron Microscopy," American Physical Society Meeting, New York, NY,

March 19, 1987.

Jach, T. , "Dynamical Diffraction of X-Rays from Crystal Surfaces at Glancing

Incidence- -A New Surface Science Technique," Physics Division Seminar,

Naval Research Laboratory, Washington, DC, April 2, 1987.

Jach, T. , "PIN Diodes as X-Ray Detectors for Synchrotron Radiation," Cornell

High Energy Synchrotron Source Seminar, Ithaca, NY, May 1, 1987.

Jach, T. , "Using Silicon Diodes to Instrument Synchrotron Radiation Experiments, " Ecole Polytecnique , Palaiseau, France, September 11, 1987.

Jach, T. , "Energy Depencence of the K/? Fluorescent Line and its Satellites in

Ar Gas," International Conference on X-Ray and Inner-Shell Processes (X87), Paris, France, September 15, 1987.

Jach, T. , "Using Silicon Diodes to Instrument Synchrotron Radiation Experiments, " Laboratoire pour 1 'Utilization du Rayonnement Electromagnetique

Orsay, France, September 21, 1987.

Johnson, A. , "Recent Work on the Chemisorption of First Row Protic Hydrides

on Si(100) Using ESDIAD," Lawrence Berkeley Laboratory, Berkeley, CA,

March 9, 1987.

14
Johnson, A. L. , "First Row Protic Hydrides Adsorbed on Si(100): Structure

and Reactivity," American Chemical Socieity Meeting, Denver, CO, April

8, 1987.

Johnson, A. L. , "Chemistry in One and Two Dimensions: Structural Studies of

Chemisorption on Platinum and Silicon Using Near Edge X-ray Absorption

Fine Structure (NEXAFS) and Electron Stimulated Desorption Ion Angular

Distributions (ESDIAD)," Department of Chemistry/Chemical Engineering,

University of Washington, Seattle, WA, April 30, 1987.

Johnson, A. L. , "Structural Studies of Chemisorption on Platinum and Silicon

Using Near Edge X-ray Adsorption Fine Structure (NEXAFS) and Electron

Stimulated Desorption Ion Angular Distributions," Department of Chemistry/Chemical Engineering, California Institute of Technology, Pasadena,

CA, May 1, 1987.

Johnson, A. L. , "Digital Video Data Acquisition/Analysis for Existing ESDIAD

Apparatus," Desorption Induced by Electronic Transitions (DIET-III)

,

Shelter Island, NY, May 21, 1987.

Johnson, A. J., "H2 0, NH3 , and HF on Si(100) by ESDIAD," Department of

Chemical Engineering, Stanford University, Stanford, CA, August 6, 1987.

Johnson, A. L. , "ESDIAD of First Row Protic Hydrides (H2 0, NH3 , and HF Adsorbed

on Si(100): Structure and Reactivity," Department of Chemistry, Oak

Ridge National Laboratory, Oak Ridge, TN, August 17, 1987.

Kurtz, R. L. , "Photon-Stimulated Desorption via Core Exciton Production in

MgO," American Physical Society Meeting, New York, NY, March 19, 1987.

Kurtz, R. L. , "Ion Desorption Induced by Core Exciton States in MgO," Desorption Induced by Electronic Transitions (DIET III) , Shelter Island, NY,

May 20, 1987.

Kurtz, R. L. , "The Influence of Surface Structure on Mechanisms of Stimulated

Desorption," Desorption Induced by Electronic Transitions (DIET III),

Shelter Island, NY, May 21, 1987.

Kurtz, R. L. , "The Dynamics of 0

+ Desorption from Ti02

, " Desorption Induced by

Electronic Transitions (DIET III), Shelter Island, NY, May 21, 1987.

Kurtz, R. L. , "Performance of the SURF-II High-Throughput Toroidal Grating

Monochromator," Synchrotron Radiation Instrumentation Conference,

Madison, WI , June 22, 1987.

Kurtz, R. L. , "Resonant Photoemission Measurements of Superconducting Y-Ba-Cu0," Forty-Seventh Annual Conference on Physical Electronics, Pacific

Grove, CA, June 29, 1987.

Madey, T. E. , "The Structure of Molecules on Surface - Application of

Electron Stimulated Desorption," Department of Materials Science Seminar,

University of Illinois, Urbana, IL, February 11., 1987.

15
Madey, T. E. , "The Interaction of Water with Solid Surfaces: Fundamental

Aspects," Chemistry Department Seminar, Howard University, Washington,

DC, February 13, 1987.

Madey, T. E., "Direct Determination of the Structure of Surface Molecules,"

Spanish Vacuum Society Meeting, Madrid, Spain, March 1, 1987.

Madey, !. E. , "The Interaction H2 0 with Surfaces: Basic Aspects," National

Council for Scientific Investigation (CSIC) , Madrid, Spain, March

10, 1987.

Madey, T. E. , "Electron and Photon Stimulated Desorption as Probes of

Structure and Bonding at Surfaces," Department of Materials Science

Seminar, Princeton University, Princeton, NJ , March 30, 1987.

Madey, T. E. , "Structure of Molecules on Surfaces," American Chemical Society

Meeting, Denver, CO, April 7, 1987.

Madey, T. E. , "Direct Determination of Molecular Structure and Surfaces,"

Department of Material Sciences Seminar, Pennsylvania State University,

Philadelphia, PA, April 14, 1987.

Madey, T. E. , "Direct Determination of Molecular Bonds at Surfaces," Department

of Chemistry Seminar, Ohio State University, Columbus, OH, April 27,

1987.

Madey, T. E., "Direct Determination of Molecular Bonds at Surfaces," Chemistry

Department Seminar, University of Minnesota, Minneapolis, MN, May 15,

1987.

Madey, T. E., "ESDIAD of Small Molecules on Surfaces: A Few Caveats,"

Desorption Induced by Electronic Transitions (DIET III) , Shelter Island,

NY, May 20, 1987.

Madey, T. E. , "Electron and Photon Beam Damage in Surface Analysis:

Fundamental Aspects," Microbeam Analysis Society Meeting, Kona, Hawaii,

July 13, 1987.

Madey, T. E. , "The Interaction of Water with Solid Surfaces: Fundamental

Aspects," American Chemical Society Meeting, New Orleans, LA, August 31,

1987.

Madey, T. E. , "The Local Orientation of Molecular and Dissociated H2 0 on FCC

(110) Surfaces: Ag, Ni, Cu," American Chemical Society Meeting, New

Orleans, LA, September 2, 1987.

Madey, T. E. , "Determination of Molecular Structure at Surfaces Using Electron

Stimulated Desorption," Joint Symposium of American Vacuum Society and

Chinese Vacuum Society VASA-87, Beijing, China, September 8, 1987.

16
Melmed, A., "Field Ion Microscopy and the Icosahedral Problem," University of

California, Berkeley, CA, November 6, 1986.

Melmed, A., "Atomic Dissection of Icosahedral-AlMn: The FIM View," American

Physical Society Meeting, New York, NY, March 16, 1987.

Melmed, A. , "Nucleation and Growth of Cr on Stepped Surfaces with Facets - An

FEEM Study," Thirty-Fourth International Field Emission Symposium, Osaka,

Japan, July 17, 1987.

Powell, C. J., "Recent Developments in Surface Analysis by X-Ray Photoelectron

Spectroscopy (XPS or ESCA) , " Eastern Analytical Symposium, New York, NY,

October 22, 1986.

Powell, C. J., "High Accuracy Measurements of XPS Binding Energies and AES

Kinetic Energies for Copper, Silver, and Gold," American Vacuum Society

Meeting, Baltimore, MD, October 29, 1986.

Powell, C. J., "Recent Developments in Surface Analysis by X-Ray Photoelectron Spectroscopy," Chemistry Department Seminar, University of

Maryland, College Park, MD, November 7, 1986.

Powell, C. J., "Reference Materials for Surface Analysis," NPL-VAMAS Workshop,

National Physical Laboratory, London, UK, November 17, 1986.

Powell, C. J., "High-Accuracy Measurements of XPS Binding Energies and AES

Kinetic Energies for Copper, Silver, and Gold," Fourth International

Conference on Quantitative Surface Analysis, National Physical Laboratory, London, UK, November 18, 1986.

Powell, C. J., "The Development of Standards for Surface Analysis," Fourth

International Conference on Quantitative Surface Analysis," National

Physical Laboratory, London, UK, November 19, 1986.

Powell, C. J., "The Energy Dependence of Electron Inelastic Mean Free Paths,"

Fourth International Conference on Quantitative Surface Analysis,"

National Physical Laboratory, London, UK, November 20, 1986.

Powell, C. J., "Comparison of L3 -Shell Binding Energies of 3d Metals by XPS,

APS, and EELS," Deutsches Elektronen Synchrotronen Laboratory, DESY,

Hamburg, Germany, November 21, 1986.

Powell, C. J., "Dependence of Inelastic Electron Mean Free Paths on Electron

Energy and Material," Pittsburgh Conference on Analytic Chemistry and

Applied Spectroscopy, Atlantic City, NJ , March 10, 1987.

Powell, C. J., "Recent Developments and Trends in Surface Characterization,"

Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy,

Atlantic City, NJ , March 13, 1987.

17
Powell, C. J., "Dependence of Inelastic Electron Mean Free Paths on Electron

Energy and Material," American Physical Society Meeting, New York, NY,

March 20, 1987.

Powell, C. J., "Reference Materials, Reference Data, and Reference Procedures

for Surface Analysis: National and International Standards Activities,"

Electronic Materials and Processes Conference, Society for the Advancement of Material and Process Engineering, Santa Clara, CA, June 24, 1987.

Powell, C. J., "The Quest for Universal Curves to Describe the Surface

Sensitivity of Electron Spectroscopies," Stanford University, Stanford,

CA, June 24, 1987.

Powell, G. J., "Recent Developments in Surface Analysis by X-Ray Photoelectron

Spectroscopy," Applied Physics Division Seminar, Commonwealth Scientific

and Industrial Research Organization, Sydney, Australia, July 20, 1987.

Powell, C. J., "Comparison of L3 -Shell Binding Energies in Six 3d Metals by XRay Photoelectron Spectroscopy, Appearance-Potential Spectroscopy, and

Electron Energy-Loss Spectroscopy," Physics Department Seminar, University of Western Australia, Perth, Australia, July 30, 1987.

Powell, C. J., "The Quest for Universal Curves to Describe the Surface Sensitivity of Electron Spectroscopies," Physics Department Seminar, LaTrobe

University, Melbourne, Australia, August 6, 1987.

Powell, G. J., "The Accuracy of Surface Analyses," Symposium on Accuracy in

Trace Analysis -Accomplishments , Goals, Challenges, National Bureau of

Standards, Gaithersburg, MD, September 30, 1987.

Steigerwald, D. A., "Anisotropy of Equilibrium Surface Composition," American

Vacuum Society Meeting, Baltimore, MD, October 29, 1986.

Steigerwald, D. A., "Structural Studies of Ultrathin Sandwiches of Cu/Fe,"

American Physical Society Meeting, New York, NY, March 18, 1987.

Steigerwald, D. A. , "Structural Studies of Ultrathin Sandwiches of FCC

Fe/Cu(100)," Texas Instruments Central Research Laboratory, Dallas, TX,

April 13, 1987.

Steigerwald, D. A. , "Growth and Magnetic Properties of Ultrathin FCC Fe

Films on Cu(100)," Hewlett Packard Laboratories, San Jose, CA, July 28,

1987.

Stockbauer, R. , "Ion Desorption from Surfaces," 28th Okazaki Conference,

Okazaki, Japan, February 6, 1987.

Stockbauer, R. , "Ion Desorption from Surfaces," Electrotechnical Laboratory,

Ibaraki , Japan, February 10, 1987.

18
Stockbauer, R. , "Ion Desorption Induced by Core Exciton States in MgO,"

Desorption Induced by Electronic Transitions (DIET-III) , Shelter Island,

NY, May 20, 1987.

Stockbauer, R. , "An Ellpsoidal Mirror Analyzer for the Study of Photon

Stimulated Desorption," Desorption Induced by Electornic Transitions

(DIET-III), Shelter Island, NY, May 20, 1987.

Stockbauer, R. , "Construction and Performance of an Ellipsoidal Mirror

Analyzer," Synchrotron Radiation Instrumentation Conference, University

of Wisconsin, Madison, WI , June 22, 1987.

Stockbauer, R. , "Resonant Photoemission Study of the Electronic Structure

of High Temperature Superconductors," Boulder Superconductivity

Meeting, National Bureau of Standards, Boulder, Co, July 16, 1987.

19
4. SURFACE SCIENCE DIVISION STAFF

As of September 30, 1987, the Surface Science Division was staffed as

follows

C. J. Powell, Chief

L. M. Johnson, Secretary

R . R . Cavanagh

W. F. Egelhoff , Jr.

N. E. Erickson

J . Fine

J. W. Gadzuk

T. J. Jach

A. J. Melmed

D. A. Steigerwald*

Surface Structure and Kinetics Group

T. E. Madey, Group Leader

B. E. Stewart, Secretary

P. M. Connelly^

R. A. Demmin*

R. L. King*

R. L. Kurtz

E. 0. Neitzel#

D. E. Ramaker®

R„ L. Stockbauer

NBS-NRC Postdoctoral Research Associate

® Faculty Appointment, Part Time

# Engineering Technician

+ Electronics Technician

20
5. GUEST SCIENTISTS

The Surface Science Division has been host during the past year to the

following guest scientists who have worked in the Division staff on problems on

mutual interest.

G. P. Chambers (University of Maryland)

C. K. Chen (Precision Instrument Development Center, Taiwan)

H. H. Chen (Precision Instrument Development Center, Taiwan)

T. L. Einstein (University of Maryland)

I. Jacob (Ben Gurion University of the Negev, Israel)

R. D. Kelley (Department of Energy)

R. Klein (Retired)

C. U. S. Larsson (Royal Institute of Technology, Sweden)

D. Marton (Technical University of Budapest, Hungary)

D. R. Mueller (Naval Research Laboratory)

J. M. Nicol (University of Maryland)

J. L. Pena (National Polytechnic Institute, Mexico)

M. Polak (Ben Gurion University of the Negev, Israel)

E. L. Roman (Institute for the Physics of Materials, Spain)

P. Roncin (University of Paris -South, France)

M. H. Shapiro (California State University, Fullerton)

A. Shih (Naval Research Laboratory)

S. M. Shivaprasad (National Physical Laboratory, India)

S. Tanuma (Nippon Mining Company, Japan)

M. W. Walczak (Iowa State University)

Q. Wang (Fudan University, Peoples Republic of China)

21
NBS-114A (rev. 2-80

U.S. DEPT. OF COMM.

BIBLIOGRAPHIC DATA

SHEET (See instructions)

1. PUBLICATION OR

REPORT NO.

2. Performing Organ. Report No. 3.

NBSIR 88-3699

JANUARY 1988

4. TITLE AND SUBTITLE

Technical Activities 1987

Surface Science Division

So AUTHOR(S)

C. J. Powell , editor

6. PERFORMING ORGANIZATION (If joint or other than NBS, see instructions)

NATIONAL BUREAU OF STANDARDS

U.S. DEPARTMENT OF COMMERCE

GAITHERSBURG, MD 20899

7. Contract/Grant No.

I. Type of Report & Period Covered

9. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS (Street. City. State. ZIP)

10. SUPPLEMENTARY NOTES

| Document describes a computer program; SF-185, FlPS Software Summary, is attached.

11. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significant

bibliography or literature survey, mention it here)

This report gives a brief summary of the technical activities conducted

in the NBS Surface Science Division during Fiscal Year 1987. These activities

include surface-standards work, experimental and theoretical research in

surface science, the development of improved measurement methods, and

applications to important scientific and national problems. Listings are

given of publications, talks. Division staff, and guest scientists.

12. KEY WORDS (Six to twelve entries ; alphabetical order; capitalize only proper names; and separate key words by semicolons)

surface chemistry; surface physics; surface science; surface standards

13. AVAILABILITY 14. NO. OF

PRINTED PAGES

[X 1 Unlimited

| | For Official Distribution. Do Not Release to NTIS 27

1 Order From Superintendent of Documents, U.S. Government Printing Office, Washington, D.C.

20402. 15. Price

[J] Order From National Technical Information Service (NTIS), Springfield, VA. 22161 $11.95

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