International Atomic Energy Agencyo

IHDC(KDS)-78
D i s t r . G+ Sp.

w
I
00

I N

DC

INTERNATIONAL

NUCLEARDATA

COMMITTEE

o
(D

3
c+

(D

3
04

Report on the Twelfth Pour-Centre Meetingas

Vienna, 26-27 April 1976

October 1976
IAEA NUCLEAR DATA SECTION, KARNTNER RING 11, A-1010 VIENNAReproduced "by the IAEA in Austria
October 1976
76-9194

DrDC(NDS)-78
Distr. G + Sp.

Report on the Twelfth Pour-Centre Meeting

Vienna, 26-27 April 1976

TABLE OF CONTENTS

Foreword. . . . . . . . . . .

.

v

List of Participantsvi

Agendavii

List of Abbreviations usedviii

Minutes. . . . . . . . . . . . . . . . . . . . . . . .

Recommendations. . . . . . . . . . . .

...

1
23

Conclusions:re Cinda
re NND Exfor

25
.

27

relevant to EH) and CPND Exfor28

re CPND Exfor

31

Actions

33

Appendices:A.

CJD Progress report

38

B.

CCDN Progress reportC.

NNCSC Progress reportD.

Recent NNCSC PublicationsE.

NDS Progress reportF.

NDS report about past and future meetings

G.

Views of NNCSC on the adoption of new keywords
for neutron Exfor

„

43
45

. . . . .

%

,

58
...

71
73

_ v -FOREWORDThe Twelfth Annual Consultants' Meeting of the Pour Neutron
Nuclear Data Centres (twelfth "Pour Centre Meeting") was held at the
IAEA, Vienna,on Monday 26 April and Tuesday 27 April 1976. It was
immediately followed "by the Second Consultants' Meeting on Charged
Particle Nuclear Data Compilation on 28-30 April 1976. Both meetings
were closely related due to the discussions on the Exfor system commonly used for the exchange of both data types, and most of the participants of the first of the two meetings stayed for the second. Bothmeetings together can be regarded therefore as the First Consultants'
Meeting of Nuclear Reaction Data Centres - though photonuclear reaction
data were not a topic of the meeting.

The present document contains the minutes of the meeting of the
Neutron Data Centres. The minutes of the subsequent Charged Particle
Nuclear Data Meeting are contained in the document INDC(NDS)-77.
Both documents include all the decisions on the Exfor system disregarding from which of the two meetings they resulted.

- vi -

LIST OF PARTICIPANTS

Mr. V. Manokhin
Mr. V. Pronjaev

CJD

Mr. L. Lesca
Mr. A. Schofield

NDCC

Mr. C.L. Dunford
Mr. N. Holden
Mr. S. Pearlstein

NNCSC

Mrs. P.M. Attree
Mrs. G. Lammer
Mr. H.D. Lemmel
Mr. A. Lorenz
Mr. J.J. Schmidt
Mr. 0. Schwerer(local secretary)(scientific secretary)

NDS(chairman)(local secretary)

Observers:
Mr. A. Marcinkowski

Institute for Nuclear
Research
Swierk, Poland

Mr. Rapeanu

Institute of Atomic Physics
Bucharest, Romania

Mr. M.A. Khalil
Mr. R. Lessler
Mr. K. Okamoto
Mr. M. VlasovNDS- vii -Twelfth Four-Centre Meeting
Vienna, 26-27 April 1976

AGENDA
page
Opening of the meeting, election of chairman, adoption of agenda

1

1»

Status reports of the neutron data centres

1

2«

Cinda

3

a.
b.
c.
d.
e.
f.
g.
h.
i.
j.

3
4
4
6
6
8
8
8
9
9

3»

4«

Wrenda

10

a.
b.

10
10

d.

6.

Report by NDS, INDC conclusions
Reports by other centres

Evaluated data
a.
b.
c.

5«

Brief report on the Cinda indexers seminar
Cinda indexer's ManualCompleteness, coverage control and r e l a t e d computer programmes
P i l e maintenance, feedback l i s t i n g s , r e l a t e d computer programmes
Clean-up, blocking, and r e l a t e d computer programmes
Index l i n e s for EXFOR and evaluated data
Quantity definitions
Handbook section in the Cinda-book
Publication schedule
Miscellaneous

11

Technical problems
11
Documentation
11
Exchange of information on status and quality of available evaluated data
12
Evaluations being done or to be released
12

Customer services

13

a.

13

Request statistics

Neutron Exfor

13

a.
b.
c.
d.
e.
f.

14
15
16
17
19
20

Completeness, coverage control
Experience with exchange tapes, review of errors
Assigning of accession-aumbers, superseded data, etc.
Pending proposals, 4C-memos
Manual updating
Generalized Exfor for neutron-data

7.

Miscellaneous

21

8.

Next 4C-Meeting22

— VI11 —LIST OP ABBREVIATIONS USED

CCDN

Centre de Compilation de donnees neutroniques; same as
NDCC

CINDA

Computerized Index of Neutron Data, a specialized bibliography and data index on neutron nuclear data operated
jointly by NNCSC, NDCC, NDS and CJD

CJDCentr po Jadernym Dannym, the USSR Nuclear Data Centerat F.E.I. Obninsk

CINDU

A catalogue of numerical nuclear data libraries available
from NDS

CPND

Charged particle nuclear reaction data

GSISRSMCSC's internal system for handling experimental data; theprevious system was known as SGISRSEXPORExchange Format, initially developed for the international
exchange of neutron nuclear data, now being extended tocharged particle nuclear data

INDC

International Nuclear Data Committee

INIS

International Nuclear Information System, a bibliographic
system operated by the IAEA

NDCC

Neutron Data Compilation Centre (Centre de Compilation deDonnees Neutroniques - CCDN) of the OECD Nuclear Energy
Agency at Saclay near Paris

NDS

IAEA Nuclear Data Section, Vienna

NNCSC

USA National Neutron Cross Section Center at the Brookhaven
National Laboratory, Upton, N.Y.

Neutron nuclear reaction data

WRENDA

World Request List for Nuclear Data Measurements publishedby the IAEA

- 1 -MINUTES

Opening
Prof. Shalnov, Director of the Division of Research and Laboratories, opened the meeting welcoming the participants on behalfof the Director General. He stressed that the services of the Agency's
Nuclear Data Section to the developing countries are increasing due tothe growing importance of nuclear energy and nuclear technologies inthese countriest and that the services of the Nuclear Data Section would
not be possible without the contributions from the other centers represented at this meeting. Mr. Pearlstein replied and acknowledged therole of the Nuclear Data Section in the development of the Pour Centres
cooperation.

Election of Chairman
Mr. Schmidt was elected to act as Chairman of the meeting.
Mr. Lemmel, Mrs. Lammer and Mr. Schwerer acted as Scientific Secretaries.

Adoption of Agenda
After a brief discussion, the proposed Agenda as given on page ~W
was adopted.

1.

Status report of the neutron data centres

Each centre presented its progress report including statistics
for 1975. (These are attached as Appendices A, B, C, E ) . Some items
were discussed following the progress reports:
On the NDCC report:
Dunford acknowledges the significant progress achieved at NDCC
with the CINDA operations and with the transmission of EXPOR data.
Schmidt expresses the wish that this may continue, despite of the planned
organizational and personal changes within NDCC. Lesca points out that
NDCC had several posts vacant during the past years, but that from May
1976 onwards, the staff at NDCC will be complete and that this situation
is expected to last for at least two years. In future, it may be possible
to save one or two persons for new tasks.

2 —On the NNCSC report;
Apart from the progress-report, a list of recent M C S C publications has been distributed (Appendix D ) .
Pearlstein reports that at NNCSC, increasing effort is devoted to the evaluation of neutron cross-sections of reactor constituents and the coordination of evaluation activities.
On the NDS report;
The evaluation of the 2200m/s data of the main fissile isotopes will be currently updated by Lemmel with continuing consultationof specialists but perhaps without a specialists' meeting, since little
can be decided at a meeting. A revision of the evaluation presented
at the 1975 Washington Conference does not seem appropriate before
existing discrepancies have been clarified.
Schmidt reports about recent and future meetings on nuclear
data (Appendix F ) .
The two observers reported the following neutron data activities of their centres(progress reports attached as Appendices G andH.):
Rapeanu (institute of Atomic Physics, Bucharest): The centre is
involved in-compilation and evaluation of neutron data for Be-9, 0-16, D-2,
D2O, Th-232, U-233. The sources for the data are Cinda, preprints and data retrievals received from NDS, and also theauthors of publications.

-

measurement of thermal neutron cross-sections for several elements, in solid and liquid phase, by means of crystal spectrometer and time-of-flight.

Marcinkowski (Nuclear Data Group of the Institute for Nuclear
Research, Swierk): The activities of the group include CPND. Selected
neutron data (total and capture cross-sections in the thermal energy
range) are being compiled and evaluated, in order to be used for reactor
calculations.
In the discussion following these reports, the need for a feedback from customers about the quality of the data they receive from NDS
was emphasized by Schmidt.

— 3 —

2.

Cinda

2.a»

Brief report of the Cinda indexers' seminar (Lesca)(i)
Following a proposal by L. Lesca, the Cinda indexers1 seminar
was organized "by the NDCC Steering Committee, and was held on two daysin November 1975» at NDCC, Saclay. Its objectives were:-to bring together, for the first time, all the persons indexing in Cinda the literature from area 2;-

to familiarize the indexers with the whole Cinda system andits organization;-

to make attempts to officialize the Cinda indexing at the indexers1 home-laboratories; and - last, not least --to improve the coverage and its control system.
The minutes of this seminar are published as a report of the

NDCC.
(ii)
This report was followed by a discussion between all participants about the usefulness and the drawbacks of an indexers' network
system based on the good will of external coworkers as established inarea 2. Although, at the NDCC, an improvement in the contributions ofmany indexers has been noticed since the seminar was held, it was concluded:-that this structure gives insufficient possibilities to supervise the external Cinda indexers;-that the literature scanning for Cinda should preferably be related to the data compilation in Exfor, both for blocking purposes and for the sake of completeness in Exfor; and-that many external coworkers, who usually prepare Cinda entries
shortly before the book deadline only, cannot be brought to amore regular Cinda indexing, which is often not regarded aspart of their recognized duties.

For these reasons it was recommended to the NDCC Steering Committeethat the Cinda scanning and indexing be centralized at NDCC (Recommendation 1)(iii)
Feedback from users: The foregoing discussion entailed thequestion to the users present at the meeting (Rapeanu, Marcinkowski) about
the quality of Cinda. Both emphasized the usefulness of Cinda, but statedthat several mistakes and gaps have been found. Lemmel requested that all
mistakes found should be communicated to NDS (Actions 1 and 2 ) .

-4-Marcinkowski mentioned the special problem that publications
which do not contain any data, can often not be recognized as suchfrom the entry. This is particularly disturbing, when the publication
quoted is difficult to obtain. It was therefore agreed that the fourCentres advise their indexers that in all such cases the code 'FDG'
should be included in the comment (Action 3 ) .
(iv)
In order to generally encourage the feedback from users, it
was decided that formsheets for the communication of gaps and mistakes
should be included in the Cinda book (Action 4 ) .

2.b.

Cinda indexers' manual

The final version of the Cinda Manual will soon be publishedat HDCC. It will consist of loose leaves, so that single pages caneasily be replaced, and will be issued as a formal publication; about
150 copies will be printed (Lesca). Schofield reports that the Manual
will be composed of two parts:a.) a complete description of the Cinda system which concerns
mainly the centres, andb.) a kind of condensed "coding aid" which will mainly be used by
the Cinda indexers.
The participants of the meeting expressed their appreciation of
UDCC's effort in producing the Manual and of NDS 1 contributions to it.

2.c.

Completeness, coverage control and related computer programmes(i)Coverage control: In a general discussion, it was noted thatthe responsibility for the coverage in a centre's service area, and hence
the coverage control, remains with each centre.
(ii)
The coverage control systems at the different centres were reported and discussed: NDCC is working on the development of a computerizedcoverage control system. It will be based on the use of coverage control
entries, but the features incorporated will be partially different ascompared to the old 'ZZ*-system. Details about the planned system are to
be found in the "Summary Record of the Cinda Readers1 Seminar".
Atffl)S,the coverage control presently consists of hand-written
lists of the issues that have been scanned. HDS would participate in
HDCC's coverage control system as soon as this is ready.
HHCSC uses at present its own, more general coverage control
system, from which the Cinda coverage list is extracted. Donford suggeststhat M C S C shall investigate the feasibility of taking part in the system
to be developed by OTXJC.

- 5-

It was concluded that the development of a coverage control
system at NDCC is important (Conclusion l) and that NDCC should keep
the other centres informed about the progress in this respect (Action 5 ) .
The status of the Cinda-coverage should be communicated to
NDS in time before each book-deadline, so that the section of the book'last issues scanned' can be updated (Action 6 ) .

(iii)
Check of the completeness of the file: It was found that thecoverage list cannot provide a reliable check of the completeness, forthe following reasons:-most of the report series do not have regular numbering, andoften a centre receives only a fraction of the whole series.
A definite answer to whether a report series has been completely assessed by the Cinda-indexers can only be received from thelaboratories (Dunford);-in future, the publications and series which contain Cinda relevant information only occasionally, will in many cases not bescanned by the Cinda-indexers but rather Ibe covered with thehelp of IFIS-retrievals. Each issue of Atomindex contains alist of reports that have been indexed in this issue, yet a similar coverage list for journals seems to be missing in Atomindex.

In this connection, Lesca pointed out that in NDCC's new coveragecontrol system, flags will indicate whether a publication has been covered
through INTS or by a Cinda indexer.
Lemmel considers it important that one can easily check in acoverage list whether a certain issue has been scanned or not.
The centres agreed to inform each other which series are scanned
by Cinda indexers and for which series they rely on INIS retrievals. (Action 7)
Lesca opened the discussion about the completeness check of old
entries, i.e. entries from pre-1976 publications. Following Pearlstein's
recommendation that the effort in this respect should be limited, thefollowing proposal was made:An attempt should be made to detect and cover gaps in the main
Journal-series. Other missing entries could rather be detected by checking the literature cited in evaluation reports (Action 8 ) . In order tofacilitate the checking, NDCC will provide a reference list retrieved from the current Cinda-file to the other centres (Action 9 ) .

- 6-

(iv)
Status with respect to completeness: With respect to thecoverage at CJD, Lemmel noted that the Soviet journals are well covered, whereas the situation with the reports (resp. so-called '•preprints") from USSR does not seem to be satisfactory, Manokhin explained that CJD does not receive all Soviet reports, but steps arebeing taken to improve the coverage. Lemmel suggested that CJD send
to NDS coverage control entries for laboratory reports resp. preprints(Action 10). For journals, coverage control entries have always been
prepared by CJD and sent to NDS.
Holden reports that H. Goldstein is preparing a list of gaps
he has found in Cinda. This list will be communicated to the othercentres as soon as it is available (Action 11).

2.d.

File maintenance, feedback listings, related computer programmes

NDCC will investigate the possibility of sending all Cinda
listings in the same quantity-sort as in the book (Action 12).
It would also be desirable that in all Cinda listings the records within a block were sorted as they are in the book (Action 13).
Lemmel and Danford wondered why a new entry that is assigned
the hierarchy "main" would not supersede any earlier "main11 entry of a
block. Schofield explained that this is due to the structure of Cinda,
which requires a "head-entry" for each block. A memo about this problem
will be prepared by NDCC (Action 14).

2.e.

Clean-up, blocking and related computer programmes(i)Lemmel asked whether duplicate entries could be removed or atleast detected automatically at NDCC. A computer program to this effecthad been in successful operation at NDCC, but the program would requireconversion to the new Cinda system. Although it was recognized that eachcentre is responsible for the clean-up in its area, the participants foundthat a computer checking of duplicates would be helpful (Action 15). A
large number of duplications seems to exist in the file originating fromthe time that modifications or blocking could only be done by a "deleteand-reenter" operation. At least at NDS it was so far not possible toscan the file systematically for duplications.
(ii)
In the course of the clean-^up, NNCSC had created a great numberof "No-book-flagged" entries. Lesca expressed the need to clarify andunify the philosophy of the "No-book-flag" use. It turned out that this- 7question has been dealt with and answered at the last Pour Centres
Meeting, but that the Cinda Manual did not yet contain the appropriate advise. The next update of the Cinda Manual should include
a clear definition of the use of "No-book-flags" (Action 16) *.

(iii)
Clean-up and blocking performed:
NNCSC: About 85$ of the
post-1970 entries are now blocked; new entries will be blocked at thetime when they are coded. Many Lab-codes have been corrected, ambiguities clarified, obsolete codes removed.
In future, the Cinda activities at NNCSC will have the following priorities:l) coverage of new literature;2
entry of older missing references brought to MCSC's attention;3
correction of errors detected by users or the CCDK feedback program;
4
blocking of references and addition of data index lines relevant to
EXPOR;
5) blocking of references and addition of data index lines for pre 1970
experiments.
NDCC: about 85$ of the post 1970 entries are now blocked,
entries from Japan having not yet been treated. The report-codes arestill to be unified, which is of vital importance for the operation of
NDCC's coverage control system. The correction can, to a certain extent, be done automatically.
NDS:
For a number of years all entries from areas 3 and 4
are blocked. Difficulties still exist when labs in areas 3 or 4 publish
in journals of areas 1 or 2, for which entries are made by M C S C or NDCC.
NDS will have to request from NDCC at regular intervals retrievals forrecent entries made by NNCSC and NDCC on papers by labs in areas 3 and 4
and review the blocking (Action 17a). Duplicates have not yet been removed systematically. The lab-codes of USSR, especially the many "CCP-"
codes, have not yet been corrected.
Since the blocking is an essential feature of Cinda, it was concluded that, from 1 January 1976 onwards, the 3 centres responsible will
currently block all entries (Conclusion 2 ) .
In order to avoid future mistakes in coding laboratories, it
was decided that all centres should send to NDS for inclusion in the
Lab-Dictionary cross-references between related laboratories or between
laboratories with similar names, and information whether and when a laboratory had changed its name (Action 18)•
Dunford suggested that in case that a laboratory has changed its
name, the old code should preferably be kept and the dictionary updated
appropriately.

NDCC should also note that a special use of the "No-book-flag" was discussed by the "Subcommittee on the indexing of evaluated data" (seeConclusion 3)

- 8-

2.f .

Index lines for Exfor and evaluated data(i)
Ezfor index lines; Pearlstein was concerned about the space
the Exfor index lines occupy in the "book. Schmidt estimated that atpresent the number of Exfor lines roughly amounts to 10$ of all entries.
According to Dunford this number will be doubled, when all the data compiled before 1970 will have been converted to Exfor.
(ii)
Index lines for evaluated data: The question whether and how
the contents of large evaluated data libraries like EHIF should be indexed in Cinda was discussed in a Subcommittee, See Conclusions 3-5
and Actions 19-20*

2.g.

Quantity definitions
Following discussions held in a subcommittee it was decided-

to change the quantity H3N to MXN ( X ^ 3 ) , see Conclusion 6 andActions 21-22;-

to introduce the new quantity PPB for fission product betas(Conclusion 7 and Action 22);-

to revise the definitions of LDL and TSL (Conclusions 8 and 11.
Actions 24 and 25);-

to accept memo 4C-3/155 about resonance integrals (Conclusion 9 ) ;-how to code metastable targets (Conclusion 10);-to cancel the quantities HEM and HPR as suggested in memo 4C—3/164(Conclusion 12, Action 22a);-

to investigate the difficulties connected with introducing "neutron11 as a target material (Conclusion 13. Actions 28 and 29).

NDCC is to inform Cinda indexers about these changes (Action 27)
and to update the Cinda Manual accordingly (Action 26). NDS is to makethe appropriate changes in the text pages of the Cinda book (Action 23).

2»h.

Handbook section in the Cinda book

The handbook section as conceived at NDS for the book Cinda 76
has been distributed to all participants (see Appendix i ) . After a brief
discussion whether this section should also include the non-neutron data
handbooks, the proposed version was accepted. Two additional handbooks
were proposed for inclusion (Action 30)•

-9 -

2.i.

Publication scheduleLemmel reported the recommendation of the 8th INDC-meeting:In view of the rapidly increasing paper-costs, the frequency of cumulative Cinda issues should be reduced as much as possible. In 1978,
an 'archival 1 cumulative Cinda-volume shall be published, which willremain valid for about five years. During t h i s time, currently updated supplements shall regularly be issued. A brief discussion about
the 'cut-off year 1 , i . e . the l a t e s t reference year to be included in
the archival volume, and about possible publication modes for the part
covering the new l i t e r a t u r e , remained without conclusions. Proposals
for the publication schedule after 1978 should be worked out at thecentres and circulated as 4C-memos (Action 31).

2..j.

Miscellaneous(i)
HNCSC, NDCC and NDS are reminded to use the so-called "cosmetic" reader symbol where appropriate in order to reduce the noise in
the supplement books (Action 31a).
(ii)
Action 6 of the 11th Pour Centres meeting requested "to document
in a 4C-ntemo user reactions to Cinda (e.g. usefulness of blocking system)
for use in evaluating the present Cinda-system". In the meantime HNCSC
had requested, by means of a questionnaire, comments from Cinda users in
USA and Canada. The results are documented in the memo 4C-1/67.

At this occasion, MCSC updated the US distribution l i s t for
Cinda, which now includes about 200 persons in USA.
The users from USA and Canada were considered by the p a r t i c i pants as being representative for the users elsewhere, and therefore nofurther enquiry will be undertaken.
(iii)
Action 20 of the 11th Pour Centres meeting was "to t r y to i n clude Cinda-type indices in conferences and progress-reports". This
practice should be continued* However, i t was questioned whether such
indices should not include a l l types of nuclear data rather than dataof the Cinda scope only.

- 10 -

3«

WRENDA

3«a.

Report by NDS. INDC conclusions

The report by NDS is included in its Progress Report,
Appendix E. section 9» Lessler added that the files for WRENDA
76 are essentially closed, the printed edition will be releasedin summer 1976.
Schmidt summarized the conclusions of the eighth INDC
meeting:-

WRENDA should not only include requests for measurements,
but also for evaluations and information.

-

The previous data status conunents shall be deleted. Instead, NDS
would provide comments on WRENDA 76 using the reports by thetechnical Sub-committees on Standards and Discrepancies of
INDC and NEANDC as guideline.

-

Requests unreviewed for 2 years should be dropped.

-

A two years publication cycle is proposed.

-

A sequential number should be added on the left side of eachrequest.

3.b.

Reports by other centres

NNCSC (Dunford): Discussions about the usefulness of WRENDA
for USA are going on. At the USNDC-meeting in May 1976, potentialchanges in WRENDA supply from USA will be discussed. Perhaps it will
be proposed that in future US-requests with priority "1" only shall be
published. The pertaining conclusions of this meeting will be reported
to NDS (Action 32).
NDCC (Lesca): Although WRENDA has so far been, publishedannually, at the CCDN it has always been felt that many countries wereactually reviewing their request list every second year only. For
example, the French and Japanese requests have been thoroughly revised this year, but remained unchanged in the last edition. The recent
INDC proposal to adopt a 2-year publication cycle was therefore welcomed.
Marcirikowski: In Poland, WRENDA is used to determine and confirm the need for an experiment. It is therefore regarded as a very
useful document.

- 11 -

Rapeanu: WRENDA has been used in Romania for a long time,
both for deciding which experiments should be performed and for submitting requests. At this occasion, Rapeanu formulates an additionalrequest, which will be taken care of in WRENDA 76.
In conclusion, Schmidt strongly recommends to reduce thenumber of requests in WRENM, since many of them may have been fulfilled.

4.

Evaluated data

4.a.

Technical problems(i)Lemmel reported that many of the evaluated data files received
by NDS contain mistakes, mainly in the record identification part (e.g.
blanks instead of zeros).
Another problem at NDS is the correction of transmitted files
after small revisions by the originator. Since NDS does not have any
updating programme, i t would prefer to have the corrected version r e transmitted, rather than receive 4C-raemos about the corrections to be
performed. Pearlstein mentioned that a Fortran programme for updating
evaluated data libraries was available. Dunford said, that NNCSC would
be prepared to retransmit the corrected f i l e s , but NDS should define thesmallest unit for retransmission.
(ii)
Pearlstein asked the two observers about the format for evaluated data used in Romania and Poland:
Rapeanu: Besides the original formats of the libraries received,
occasionally the Exfor-format is used also for evaluated data.
Marc ink owski: It is tried to follow the KNDb'/B-f orma-fc. IXinford
mentions that the l i s t of NNCSC publications (Appendix D) contains also
a new manual for the ENIF/B-5 version.
Lemmel reported that a Czechoslovakia!! group is preparing a fileof evaluated fission product nuclear data, but he does not know the format. In Hungary, group constants are being evaluated, input is accepted
in a l l the formats of the major evaluated data l i b r a r i e s .

4«b.

Documentation

When preparing CINDU-11, NDS encountered some difficulties infinding a l l documentations about evaluated data. Leramel suggested thatthe exchange of information in this respect could s t i l l be improved.

- 12 -

Lesca replied that all such documents received at NDCC are
immediately distributed to a l l centres.
Pearlstein points to the NNCSC Newsletter where all reports
about evaluations are documented. Concerning ENDF, i t is very difficult to gather the reports from the many different laboratories involved.
It was decided that the second part of Action 44 from the11th Four-Centres-meeting "to inform other centres about documentationsof evaluations" is to be continued (Action 33).

4»c

Exchange of information on status and quality(i)
Action 43 from the 11th Pour-Centres-meeting "to try to getfrom users feedback information on status and quality of evaluated data
files" is to be continued (Action 34).
(ii)
Pearlstein raised the question about the feedback from area 3
concerning the evaluated data libraries. Lemmel answered that aquestionnaire was attached to each dispatch, but replies were rarely
received. However, the fact that all libraries are frequently requested
indicates to a certain extent that users are satisfied.
Manokhin says that the quality of an evaluation cannot easily
be judged without making a new evaluation.
(iii)
Concerning CJD, Manokhin reports that the centre will publish
a comparison between ENDF/B and the evaluations performed at CJD. A
paper about a comparison between different evaluations has been presented at the 75 Kiev conference. CJD will send the preprints of thispaper to NDS (Action 35). who will initiate i t s translation and d i s t r i bute i t to the other centres (Action 36).

4«d.

Evaluations being done or to be released

The evaluation activities of the centres are included in the
progress reports (Appendices A«B«C.E). The following points were added
during the discussion:
Manokhin: The full files of Pu-240, He-3, He-4 and partial
files of Pu-238, Am-243 and Cm-244 will be sent to NDS soon.
In Minsk, the evaluation of Pu-241 is completed.
ations of Pu-242, U-233 and Th-232 are in process.

Full evalu-

- 13 -

Rapeanuj Marcinkowski: The evaluations performed at both
centres (see Sect. 1 of these minutes) are connected to thermal powerreactor projects.
Lorenz: At the Transactinium Nuclear Data Meeting i t wasrecommended to evaluate certain actinides. NDS investigated the possib i l i t i e s of starting a cooperative project; groups from 5 or 6 countries are willing to participate in such a programme.
The first part of Action 44 from the 11th 4C-meeting - "evaluations and/or comparisons of available evaluations going on within
the centre's area should be reported to the other centres as soon as
possible" is s t i l l valid (Action 33).

5.

Customer services

5.a.

Request statistics(i)
The request statistics for area 1 and 3 are included in the
progress reports (Appendices C.E).
(ii)
Pearlstein proposed to examine the request statistics closely
and to find out, whether there are some data or data-types that arenever requested. These should perhaps not be compiled, or only uponrequest. Lesca mentioned that this question had already been discussed
at NDCC, but there had been strong objections from the evaluators who
had claimed to need a l l the neutron-data.
Okamoto raised the question whether preliminary data are needed
and really worth to be compiled?
It was concluded that for both these points the centres should
provide each other with any background information available before thenext Pour Centres Meeting (Action 37).
(iii)
Pearlstein asked how the customers processed multidimensional
tables. Lemmel answered that in area 3 only listings have been r e quested so far; the planned computation-format foresees only two-dimensional tables.

6.

Neutron-Exfor
Conclusions about Exfor coding rules can be found on pages 27-30.

- 14 -

(i)Lemmel opened the discussion "by presenting two 4C-memos
concerning the completeness of Erfor: Jfemo 4C-3/159 on the completeness of P-31 data, and Memo 4C-3/I65 on the completeness of keV
fission data, containing also completeness s t a t i s t i c s derived fromthese two memos. As a rough result, the l a t t e r memo states the following completeness:
Approx. 50$ for important data, less than 40% for less important data*

figures.

In the discussion following, most participants rejected these
The main arguments were:-

Many of the references mentioned in memo 4C-3/165 containsuperseded or unreliable data.

-

In particular, the case of P-31 had "been checked at UNCSC;
i t was found that from area 1 actually 2 old data-sets were
missing. At NDCC, the completeness of the keV fission data
had been checked and the completeness had been found to amountto about 85$.

The discussion was concluded by the decision that CJD, NDCC
and MCSC would respond to Memo 4C-3/165 in 4C-memos. (Action 38).
(ii)
Pearlstein suggested a method to detect important data that are
missing in Exfor: Whenever a data specialists meeting or conference isheld in a centre's area, this centre should supply the participating
evaluators with the pertaining Cinda-retrievals and Exfor-data. In caseof any complaint about the adequacy of the experimental data supplied,
this should be communicated to the other centres (Action 39).
(iii)
Some experience with feedback from evaluators could already bereported:
Manokhin: Both Nikolaev's group in Obninsk and Konshin's groupin Minsk were satisfied with the data available in Exfor or HEUUADA.
Dunford: Feedback was received about heavy metals and structurematerials for fast reactors; i t resulted in some corrections of the data,
but no major gaps were detected.

Evaluators participating in the last Task Force Meeting were
supplied with experimental data. The reaction is to be awaited.
Lesca: When sending fission-related data to evaluators,
letters asking about the adequacy of these data have been attached.
Out of 7» 3 positive and no negative answers were received. He
suggests to provide the evaluators participating in the meeting on"Differential and Integral Nuclear Data Requirements for Shielding
Calculations" which will be held in Vienna, in October 1976, with
up-to-date data compilations.
(iv)
In this connection, Okamoto recommended that, if a memberof one centre attends a conference or a technical meeting, he should
communicate any material on new data to the centres responsible.
This was accepted (Action 40).
(v)
The next item discussed, was the "Delinquency liBt" which
was to be prepared according to Action 31 from the 10th Pour Centres
meeting. It was decided that exact book-keeping about the measurestaken to get the data, and informing the other centres when data are
not available, was sufficient. The delinquency l i s t was dropped.
(vi)
In a review of the actions from the last Four Centres meeting
concerning the completeness of Exfor, the following was decided.
Action 29 - "It would be desirable for all centres to send astatus l i s t of Erfor entries when sending a Trans-tape (status l i s t toinclude data sets compiled but not yet transmitted and data sets being
compiled) is to be continued (Action 41).
(vii)
Action 31 - "To compare the translated SCISRS-I data with present Exfor files . . . . (see "List of Actions") is to be continued.
(Action 42).

6.b.

Experience with exchange tapes, review of errors(i)Dunford discussed the memo 4C-1/79 about 3 trans-tapes of the40000-series.
Generally, many corrections have to be applied to thetrans-tapes received from CJD.
Attree mentioned similar problems, although at NDS only theformal requirements for the input into the files are checked.

- 16 -

Manokhin explained that an insufficient check-programme had
been used so far. The Exfor-tapes to be transmitted in 1976 will bechecked by a newly developed checking-programme; the checking specifications used will be communicated to the other centres (Action 43).
In reply, the other 3 centres will send the output of their
checking of these tapes to CJD (Action 44).

(ii)
A computer list of errors found by NDCC in trans-tapes processed in 1975 has been distributed during the meeting. All theseerrors had been detected by the centre's check-programme. Schofieldannounced a memo 4C-2/72 where these errors are discussed.
Dunford explained that NNCSC's check-program is currently being
improved, and that a feedback from other centres was considered as very
helpful.

(iii)
Lemmel mentioned that until now NDS had only received 3 retransmissions from area 2. Schofield asked NDS to send a 4C-memo requestingfrom NDCC those Exfor-entries for retransmission where errors have beenfound (Action 45)»

(iv)
Manokhin reported that the computer terminal at CJD is now connected to a new computer which requires a 7-track format for tapes. He
requested NDS to retransmit TRANS-3O2O in 7-track format to CJD (Action 46).
Also, the first few records of a tape can at present not beread due to computer problems. CJD will probably ask for retransmissionof some subentries. Dunford suggested that until these problems are
solved, the centres transmit their tapes with a short dummy first file
(Action 47).

6.c.

Assigning of accession-numbers. superseded datat etc.

(i)
NNCSC (Dunford): The clean-^up of the 50000-series is almost
finished. Many errors were corrected, and new, previously missing, data
were added. This series will be retransmitted as regular 10000-series.
An index for the correspondence between the 50 000 and the new 10 000
series, as well as ISO-QUANT indices to the new 10 000 series will besent to the other 3 centres (See Action 42).
The 60 000 to 80 000 series will be corrected and retransmitted
on request, but they will not be reorganized.

- 17 -

(ii)
Lemmel mentioned that the assignment of accession-numbers
was not uniform. In some cases, e.g. the same experiment has got 3
different accession-numbers. He also requested that superseded data
be either replaced by the new data, or that cross-references be made.
Dunford stressed that uniform assignment of accession-numbers
is particularly important when Cinda is used as an index to Exfor. In
future, more care should be taken of these problems.
Concerning the superseded data, M C S C usually enters the superseding data in new subentries, keeping the old ones at their place.

6.d.

Pending proposals

Various 4C-memos about proposed conventions or changes in Exfor were discussed:(i)Memo 4C-1/80 about pointers and standards was accepted except
for its last paragraph.

(ii)
Memo 4C-1/78 proposing a Lexfor entry on Single-Level ResonanceParameters was essentially accepted except for a few minor revisions.

(iii)
Memo 4C-3/148 about the use of the column headings ANG and ANG-CM
in the same subentry, and the reply in 4C-l/7O« that this would mean to
i&Slude multiple representations of the same variable in Exfor was extensively discussed. Okamoto mentioned a similar problem when both the timeof flight and the energy were given in a paper.
It was eventually concluded that, whenever a paper gives the samedata in two different representations or units, those values which weremore directly obtained should be compiled. If important, the fact that asecond presentation is given should be noted in free text in the BIB
section, as well as the formula relating the two data sets. The case oftime of flight and energy should perhaps be further investigated.

(iv)
Memo 4C-l/73s The code "X" for X-rays under the keyword PARTIET has been accepted. *(v)
Re memos 4C-3/128 and 4C-1/76" about coding of half-lives in Exfor, no decision was made. The matter will be further investigated.

*
The code has been changed to "XR" during the Second Meeting on Charged
Particle Nuclear Data.

- 18 -

(vi)
Memo 4C-1/76 about particle designators for angular correlations
and triple differential cross-sections. The proposal involves technicalproblems for the Dictionary 14; it will be brought up again in the discussion of reaction schemes in the extended Exfor (Second Meeting on
Charged Particle Nuclear Data).
(vii)
Memo 4C-1/77: The Lexfor entry for resonance integrals was
accepted, except for the sentence: "If no value of the cutoff energy
is given, it may be coded as 0.5eV". This sentence should be omitted.
(viii) The rule included in the Lexfor update of June 1975 - "Data....
under NUC-QUANT should not be given an incident energy" was discussed.
Dunford pointed out that an incident energy should only be given in Exfor, if the result is clearly depending on it. Lemmel suggested that theenergy, if given in the publication, should then be entered in the freetext. The rule itself was accepted.
(ix)
Pearlstein raised the question of the use of multidimensional
tables. HNCSC wishes that the use of pointers and vector-common be
not extended any further, giving the arguments that-the system would become too complicated, processing would be
difficult;-since Exfor is the main output format, a subentry should represent one unit of retrieval;-for the consideration of further extensions, the generalized
Erfor system should be borne in mind;-

it is recognized that it may be favourable to compile the dataclose to the format used by the author, in order to get theauthor's proof more easily. However, a separate compilation
format could take care of this demand, but the exchange format
should not be affected.

A preliminary agreement was reached, that different data evenfor the same ISO-QUANT and the same experiment, e.g. when they are derived by different methods of analysis, would be entered in different
subentries. Lemmel will write a memo about the status code to be used
to relate these data (Action 48).
(x)
It was emphasized that precise reference to the Exfor Manual
should be included in all 4C-memos quoting errors (Action 49).

- 19 -

6.e»

Manual updating(i)Lemmel acknowledged the great effort done at NNCSC in updating
the Exfor-Manual. He mentioned, however, that more care should be taken
to avoid or correct small errors.
It was recognized that the speed of transmission of Manualpages had considerably improved since the last Four Centres Meeting.
It was agreed that in future NNCSC would transmit changes in the Exfor
Manual at latest about one month after a Pour Centres decision has been
agreed or after the draft minutes of a Pour Centres Meeting have been
received (Action 50).

(ii)
Lemmel stated that probably several 4C-memos were related to
Action 25 of the last Pour Centres Meeting - "to review Exfor Manuals
in order to make them compatible with checking programme specifications".
This action is still to be continued (Action 51).

(iii)
Concerning the Action 26 of the 11th Four-Centres-Meeting "to exchange between the centres Exfor user Manuals prepared at eachcentre", Lemmel reported that the "edited" Exfor-format as released by HDS has been circulated as 4C-memo -3/136 and the information
sheet about Exfor has been included in CDTDQ-ll. The action is to becontinued (Action 52).

(iv)
Action 28 of the 11th 4C-meeting - "to investigate the possibility of restructuring Exfor/Lexfor Manuals so as to separate the format material from the procedures material" should be continued(Action 53).

(v)
Referring to Action 41 of the 11th 4C-meeting, Dunford statedthat some of the Cinda entries for C-12 and 0-16 actually contain information on natural C and 0, since the contribution of C-13 and 0-17» 18
is not quite negligible for certain data types.
(vi)unlessConcerning the "RAW"datat no action will "be taken at NNCSC,
relevant proposals are received.

(vii)
Dunford suggested that extensive physical explanations, likethe one on fission-yields, should not be included in the Lexfor Manual.
Instead, some kind of Exfor-Monographs could be published about certain
topics, which would be referred to on the respective Lexfor-Manual page.
The centres agreed that they would send suggestions for reports to bereferred to in the Lexfor Manual to NNCSC (Action 54).

- 20 -

6»t.

Generalized Erfor for neutron-data(i)
Donford presented the paper "Views of NNCSC on the Adoptionof New Keywords for Neutron Exfor" (Appendix G ) . This paper recommends
that the neutron Erfor adopt the following keywords, which weresuggested by Muenzel for the Charged Particle-Exfor, effective as of
the next Pour-Centres Meeting:the keyword "REACTION", which would allow to specify reactions with more than 2 outgoing particles, and the residual
nucleus;-

the keyword "MONITOR", which would be particularly helpfulin specifying fission-yield standards;-

the keyword "DECAY-DATA", which would allow for the coding of
all decay data in machine retrievable form;
the keyword "ADD-RES" for "Additional Results".

For the required changes of the dictionary, a draft has been
worked out at NNCSC (Dunford).

(ii)
A discussion about the way and schedule of implementing thesechanges in neutron-Erfor followed:
Dunford suggested that all new keywords except "REACTION"
can be easily implemented, since only checking programs are affected.
So one could consider implementing at an early date all new keywords
except "REACTION". For this keyword many programs are affected andtherefore a longer lead time would be required. The conversion from
"ISO-QUANT" to "REACTION" formalism can probably be made automaticallyusing a conversion dictionary.
Dunford proposed a cutoff date for the use of the new keywords,
especially for "REACTION" instead of "ISO-QUANT", although a computertranslation from one keyword to the other should in most cases bepossible. He pointed out that the changes required are rather simple
and concern only the check-programme.
Schmidt said that NDS would not be able to change the programmes during the next year.
Lesca reported that NDCC would in principle be prepared toaccept the Charged Particle-Exfor.
Lemmel proposed that the generalized Exfor system be agreed
upon as soon as possible, but an implementation schedule be set up for
gradually converting the neutron Exfor to the generalized Exfor.
As a basis for this implementation schedule, Dunford agreed toprepare a detailed analysis of the problems involved in the conversion(Action 55).

- 21 -

7«

Miscellaneous(i)
Pearlstein asked the other centres, whether measurers in theirarea were coding their data in Exfor format:
Schmidt:
I. Angeli from Debrecen, Hungary) is presently making
an attempt. A group from the "Technische Uhiversitaet Dresden" in
DDR would also be interested.

in USSR;

Pronjaev: No experience in that respect has yet been madeattempts will be promoted.

Lesca:
tivities.

There are no intentions at NDCC to initiate such ac-

Pearlstein: Some positive experience has been made at USA,
NNCSC will continue to stimulate measurers to code in Exfor.

(ii)
Pearlstein expressed the opinion that, in view of the stillongoing development of the Pour Centres1 activities in the neutron data
field, a two days duration of the Pour Centres meeting was definitely
too short. He felt that many points of discussion could not really beconcluded due to the shortage of time. He proposed that the next PourCentres meeting be scheduled for at least 3 days, perhaps overlappingwith the beginning of the 3rd Charged Particle Nuclear Data meeting.
This view was shared by all the participants.

(iii)
The participants noticed with concern that, for the first time,
only one person per centre had been invited to this Pour Centres meeting.
They confirmed that each centre needed to delegate at least two persons:-the head of the centre, or his representative, who is responsible
for the centre's policy; and-a technical expert who is well acquainted with all technicalmatters discussed. Therefore it was recommended to the IAEA
that, as in the past, two persons from each national centre be
invited to participate in a Pour Centres meeting at IAEA expense (Recommendation 2 ) .

(iv)
The Actions 2, 29 and 30 from the 10th Four Centres meeting
about information to be exchanged between the centres are continuing.
(Actions 56. 57. 58).

- 22 -

(v)
Action 34 of the last Pour Centres meeting asked NNCSC "toinvestigate the feasibility of translation of the Nuclear Data Project
capture gamma-ray computerized data file into an Exfor-like format".
Most of the data in the computer file are recommended values. He
agreed to investigate and inform the other centres about the availability of the Nuclear Data Project capture gamma-ray file and othercomputerized data files (Action 59)«
(vi)
Action 36 from the 11th Pour Centres meeting requested NDS "to provide each centre with a listing of capture gamma-ray compilations
being done in all areas"* Some compilations of this type were includedin CINDU-11, but the action should continue (Action 60).
(vii)
Dunford reported that in about two years a new edition of
BNL-325i vol« I will be available. Related experimental data should
be compiled in Eacfor. The recommended values of the third edition areavailable on tape, together with a format description.

8.

Next Four Centres meeting

The next meeting was proposed to be held together with themeeting on Charged Particle Nuclear Data Compilation, on 25-29 April,at Obninsk resp. Moscow, following the Kiev Conference on Neutron
Physics.

- 23 -

RECOMMENDATIONS
1.

(about coding of Cinda entries at the centers)

CINDA has a long history of being a useful condensation of thebibliography to neutron data. Recent efforts to block entries pertaining to a single experiment, to improve literature coverage, andto correct older entries where required, have increased the usefulnessof CINDA. This and the fact that CINDA has also become an index toexperimental data files resulted in an increasing interest on the partof research scientists in the CINDA publication, its supplement, andits comprehensive and up-to-date coverage.

Because of-

the need to combine the EXFOR and CINDA compilation for theblocking of relevant CINDA entries, a task which can be carriedout only at the centres;-

the fact that the coverage responsibility for both CINDA and
EXFOR resides already within the centres; and-the need to' have updates performed as often as possible andnot only at the approach of the book deadline, in order tomake the CINDA file adequate for "current awareness" searches;the 4 centres strongly believe that the literature scanning, thepreparation of CINDA entries and the Exfor compilation should be performed by the data centres.

2.

(about invitations to Pour Centre meetings)

The participants confirmed that the annual Consultants1 Meetingsof the Neutron Data Centres could serve their purpose with optimum
profit only when each Centre is represented by its head for discussing
and deciding policy matters, and by a technical expert who is familiar
with all technical matters to be discussed.
It was therefore recommended that the IAEA continue its previous
practice of inviting two representatives from each centre to thesemeetings, and paying for them.

CONCLUSIONS re GINDA
Coverage Control in Ciada
C 1

The development of a coverage control system at NDCC isconsidered important and should be given high priority.

Clean-up in Cinda
C 2

From 1 January 1976 onwards, all entries into Cinda are
currently "blocked by the responsible centres.

Indexing Evaluated Data in Cinda (see also actions 18-20)
C 3

a. Documents and data index lines are entered under the
CINDA quantity "Evaluation" only, if they contain fullevaluations of all or most significant quantities. The
comment should contain some information whether theevaluation is comprehensive or partial.
b. If additional entries are made for individual quantities,
these get the no-book-flag.
c. Evaluations of single quantities continue to be enteredunder the relevant quantities and not under the quantity"Evaluation".
d. Documents reporting many evaluations contained in alarge library are entered in the handbook-section.

C 4

ENDF and ENDL are so far not indexed in Cinda. The matter
will be further reviewed.

C 5

Documents on evaluations which do not contain data are also
entered under the quantity "Evaluation" with a comment "Nodata given". If such documents do not contain detailed databut, for example, resonance parameters, an entry under "RES"
should be made in addition to the entry under "Evaluation".

Cinda quantities (and targets) (see also actions 21—29)
C 6

The quantity N3N is changed to NXN (where x ss 3), to include
all reactions producing 3 or more neutrons. The commentshould state whether only N3N or also other reactions areincluded. NDCC will retrieve, by area, N3N entries in card
image form, and send it to the relevant centres for appropriate
revision.

C 7

The quantity FPB (Fission Product Betas) is introduced, forentry under the fissioning nucleus only, not under thefission product nuclei. NDCC is to retrieve FPG entries by
area, and to send the retrievals to the centers for reviewing
them and adding FPB entries where necessary. These FPB entries
do not get the "cosmetic" indexer symbol.

- 26 C 8

Prom now on LDL entries are coded with the nucleus to which
the quantity given refers. Explanation is given in the bookindicating to users that old LDL entries still refer to thetarget nucleus. Level spacings derived from resonances are
not entered under LDL. Old entries contain a lot of errors
which should be tidied up as time allows. The use of LDL isrestricted to LDL data deduced from energy distributions of
gammas or particles from neutron induced reactions.

C 9

4C-3/155 about resonance-integrals is accepted.

C 10

Metastable targets are noted in comments.

C 11

With respect to TSL the definitions by Holden. + Goldstein
and the proposed Manual text by NDS is accepted and will be
combined by HDCC.

C 12

Memo 4C-3/164 re R M and MPR is accepted.

C 13

NDCC shall investigate how "neutron" as a target can beentered in Cinda, and to contact NDS how this would affectthe book printing program. NNCSC shall issue a Lexfor entry
stating for which quantities the target "neutron" is entered.

- 27 Conclusions about the NND Esfor system
Rules specific to NND
1.

The proposal contained in Memo 4^-1/76 section D about angular correlations
and triple differential cross-sections is postponed until conversion from
ISO-QUANT to REACTION formalism since the quantity codes proposed are toolong for inclusion in dictionary 14.

2.

Memo 4C-1/77 (dispatched 76/4/2)proposing a Lexfor entry on resonance integrals
is accepted, except for the sentence "If no value of the cutoff energy is given
it may be coded as 0.5 eV". In such case 0.5 eV may rather be entered under
the column headingEN-MIN-APXAlternatively a comment on the cutoff energy may
be entered in free text only until further information is received from theauthor.
Also, the Note on page 2 of Memo 4C-I/77 should be revised such that all
resonance integrals, disregarding whether they were directly measured or
deduced from o(E) measurements, may be coded in Exfor with appropriate explanation in free text and under STATUS.

3.

For data entered under NUC-QUANT the column heading EN must not be given. If
the incident neutron energy is not irrelevant as may be the case for level
density parameters, it may "be entered in free text. (This is to be added on
Manual-page VIII.16.)

4.

Memo 4C-1/8O (dispatched 76-4-12) on pointers and standards was accepted(except for the last 3 lines which are discussed elsewhere in the present
conclusions). The contents of this memo should be included in Lexfor underStandard. The column heading keywords STAND1 and STAND2 are not obsolete.

5.

The Lexfor entry on Single-Level Resonance Parameters proposed in 4C-I/78(dispatched 76/4/12) was accepted with some minor modifications:- Under 1) Resonance energy: a) When the resonance energy is determined ...
(instead of assigned)- 4 lines further below: omit the word "only"- Under 2) Resonance widths: keep the definition of V from the previous
Lexfor entry- last line of same page: write units throughout in the style of columnheadings: EV, MILLI-EV, etc.
- Under 3) Reduced neutron widths: the characters "nu" and "v"are inconsistent- omit the note: "E is in eV1. In the formulae given E may have any unit.
Example: E = 1.2°keV, then 1.2 keV/eV = 1200 which is to be entered in
the formula.
- Under 4) Peak cross-section: Add to the "Note" NP,RES,TER. (A probably
preferable correction of NP,RES,TER into NF/PCS,,TER should be postponed
until the conversion from ISO-QUANT to REACTION formalism.)- Under 5) Resonance area: the factor in front of the ratio is inconsistentand disagrees with previous Lexfor entry. NNCSC is asked to check what
is correct. Also the units should be mentioned.
- Under 6) Special representations: there is a typing error in the code S Q / S O .

6.

The question of Fission Yield Standards (sae proposed Lexfor entry in Memo
4C-3/122 of 75/5/13J was postponed until after the conversion from ISO-QUANT
to REACTION formalism.

7.

The "multiple-isocruant" formalism for is eric cross-sections (compare
item 19. of the NNIH-CPND Exfor conclusions) was not yet accepted for NND.

- 28 Conclusions relevant to the NMD and CPND Exfor systems
EXPOR_structure. 1.

The SUBENT record may contain in fieldsN/ — Nc (cols.45—66) center internal
information which is of no interest to recipients of the entry. (Although
this is a KACHAPAG internal matter, this should be added in the Manualon page III.6, in order that Exfor users may find an explanation of themeaning of this field, and in order to avoid that this field is assigned
a different purpose.)

2.

Col. 67 in the ENDTRANS record is to contain the number of character of theoriginating center, followed by 9's in col. 68-79. (This applies forcenter-to-center transmission tapes where throughout the tape col. 67
contains the code of the originating center. In other tapes which may
contain Exfor entries from various centers, the record identification
field cols, 67-79, of the ENDTRANS record should be such that it sorts
at the end of the tape. Compare Manual page III.3.) Action 23 of CPHD meeting.

3.

Trailing records to fill up the last block should be repetitions of the
ENDTRANS record.

4.

It should be stated explicitly in the Manual (e.g. on page V.I. and VI.1.)
that in the COMMON and DATA sections the number of columns is unrestricted.

Pointers, etc.
5.

Pointers may be used in subentry 001 if they apply to all following subentries,

6.

Compilers are reminded of the rule that a pointer in the BIB-Section refers
to all subsequent records until a new pointer or keyword is encountered.

7.

If two different numerical results of the same quantity are obtained fromthe same experiment by two different ways of analysis or normalization,
two separate subentries must be made, linked to each other by appropriate
STATUS information. The solution with pointers as illustrated in thefollowing example
ISO-QUANT(...)
ANALYSIS l(...)
ENDBIB
DATA
M

DATA

1DATA

2

is so far not accepted by all centers and can therefore not be used in Nil])
Exfor transmission tapes.
8.

In general pointers are used only when the data table contains morethan one DATA column. The different DATA columns are defined, by means ofpointers, either by the quantities coded under ISO-QUANT/REACTION or ~zytjie parameters entered under COMMON. In addition, items of BIB information
may be labelled by the same pointers.
In the following example pointers may be used within a BIB Section even if
the data table contains only one DATA column without a pointer.
DETECTORl(...)

2(..O
PART-DETl(...)
2(...>(Note: NNCSG does not recommend the use of pointers in this case unless
linked to a multiple Iso-quant, but can accept such constructions.)

Dictionaries and. codes

9.

The code XR for X-rays is accepted in dictionary 13. The origin of the
X-rays (K, L, M etc.) is not coded "but may be given in free text.

10.

The length of the codes in dictionaries 16-23 remains restricted to
5 characters. Action 18 of the CPND meeting.

11.

The codes proposed in Memo CP-E/lf item 2, as addition to Diet. 22 on
Detectors were accepted. Howeverf the code for "position sensitive solidstate detectors" was changed to PSSSD.

12.

In dictionary 24 the keywords of the type HLn will continue to be given
explicitly as HLlt HL2, HL3, etc., since check programs in various centersneed to have these codes in dictionary 24. NDS will enter additionalsuch keywords in dictionary 24 as they occur, and will enter for each ofthese keywords one or two additional varities, e.g. HL4 etc. in order toobtain more flexibility. (This is in reply to the proposal on the bottomof Memo 4C-I/8O, dispatched 76/4/12). Action 22 of the CPND meeting.

13«

The codes proposed in Memo CP-E/l, item 3, as additions to Diet. 25 on
Units were accepted.

14.

Diet. 25 on Units will continue to include all unit-keywords, and the idea
to construct the unit-keywords from certain elements such as MU-, N-, P-,
P- for micro, nano, pico, femto, was not accepted. However, whenever
new unit-keywords are introduced, such prefixes should be used in a consistentmanner.

15.

The decay units DPS and MUCl/MUA are both entered in diet. 25. In Exfor
entries preferably the same units should be used as given by the author.

16.

The column-heading keyword RATIO and SUM are kept (SUM so far in CPND
Exfor only). NDS should clarify their use. Action 12 of the CPND meeting.

Rules
17•

The Lexfor entry on "Nearly monoisotopic elements" as proposed in item Eof memo 4C-I/76 of 76-3-26 is accepted and shall be added to. the Lexfor
entry on "Monoisotopic elements". (Note by editor: On this Lexfor pagethe element symbols should be written consistently with capital characters
only.)

18.

If the coded information under DETECTOR starts with COINC, then all detector
codes following in the same pair of parentheses refer to the coincidence
arrangement. Any other detector to be coded must be given in a separate
line, as for example
DETECTOR (COINC, DET1, DET2).
(DET3). FOR UVW RADIATIONFOR XYZ RADIATIONIn the parentheses describing the coincidence arrangement, a detector code
may be given more than once.
(Note: This formalism was not formally adopted for NND. We believe howeverthat it would not disturb any existing programs so that it should be
acceptable also for NND.)

- 30 -

19«

Isomeric ratios and sums are entered in addition to the partial isomericcross-sections only when they were given by the author. For END they are
entered in separate subentries; for CFND the Multiple-Reaction formalism
may be used for entering such data in a single subentry.

20.

The revised Lexfor entiy proposed in Memo 4C-3/162 of 76/4/7 about differential
cross-sections relative to i t s value at a given angle, i s accepted.

21.

The rules for the use of the keyword ANALYSIS should be clarified in Diet.2.

22.

The proposal about the coding of metastable states of the residual nucleus
where the sequence number of the state obtained may be unknown, was accepted
as proposed in CP-B/l pages 1,2.

23«

For certain keywords the prescription exists (Manual page IV.2) that any
information given in parentheses must be repeated in free t e x t . Thus, inan "edit" program the coded information may be ignored in these cases.
If the compiler prefers not to repeat the coded information in the free text,
a point i s entered in the position following the closing: parenthesis, orthe entire fi&ld from the closing parenthesis up to column 66 are left blank.
Both, the point or the blank field serve as an indicator to an "edit" programthat the coded information requires expansion.

24»

The proposal to allow in the DATA-section for semi-numerical data t such as"smaller than", 7/2—, X for a blank, e t c . , was not accepted, since t h i swould create difficulties in programming and since not a l l computers accept
a symbol like "smaller than".

25«

The BIB-Section in Exfor has i t s name for purely historical reasons. I t
rather functions as a "TEXT"-Section containing bibliographic, physics andadministrative ( e . g . HISTORY) information. (This clarification should be
added on the top of page IV.1 of the Manual.)

26.

If original data are given together with deduced values within thesame subentry using the "multiple-isoquant" resp. "multiple reaction"formalism with pointers, then a note "DEDUCED QUANTITY" or "DEDUCED FROM..."should be given in free text behind the isoquant/reaction concerned. In
addition, under STATUS coded information i s entered linked by pointers to
the relevant REACTION resp. ISO-QUANT. Some details in the use of STATUS
codes may have to be defined in t h i s connection.

27*

Different representations of the same variable must not be given within
the same subentry unless they have different pointers. For example, theincident energy cannot be given in EV aid ANGSTROM, or ANG-CM and ANG
cannot both be given. (KACHAPAG i s considering the usefulness of giving
lab-system and center-of-mass system data in the same subentry and will
eventually propose introducing t h i s option at least for CPND.)

- 31 -

Conclusions about the CPND Exfor system
HEfl.CH ON
1.

The coding rules under the keyword REACTION appear to be practicable. No
objection to this concept was received. (Action 15 from previous meeting,which was to test the feasibility of this concept, is regarded as fulfilled.)

2.

For the codes used under the keyword REACTION the following dictiqnarigs
are introduced
Diet. 30
Diet. 31
Diet. 32
Diet. 34
Diet. 35

on
on
on
on
on

Process
BranchQuantity measured
Modifiers
Data typein Subfield 3
in Subfield 5in Subfield 6
in Subfield 8
in Subfield 9

The checking programs and the convenience of the compilers require to have aseparate dictionary for each of the subfields. The contents of these dictionaries
will be as specified in Memo CP-C/1, with some modifications as specified
further below.
3.

In subfield 3 of REACTION, two identical outgoing nuclides heavier than aare coded in the form 8-^-16+3-^-16. The proposals of coding this case in theform 2*6-^-16 or 2^-16 were not accepted, because the first case would require
an extra programming branch for the star, and the second case would result inunsystematic coding of nuclides, since it was agreed to keep the Z-number forthe target nucleus.

4»

The code SEQ is introduced in diet. 31 (REACTION subfield 5? branch) indicatingthat the sequence of outgoing particles as specified in subfield 3 under
REACTION is meaningful. In this case the general rule of coding outgoingparticles in the sequence of increasing Z and A does not apply, and the residual
nucleus is not necessarily the heaviest of the reaction products. (This decisionalso answers the proposal expressed in Memo CP-E/1 item 6).)

5.

The codes M-^v H-tl_andu(M) are coded in the branch field and not in the modifier
field under REACTION.

6.

The code (CtM) in dictionary 31 (branch), which has a length of 5 charactersinstead of the usual 3, is accepted unless a code of this length creates too
great difficulties in the programs of one of the centers. (Action 21 of the
CPND meeting).
In Dictionary 32 (Quantity measured) the code YLD as proposed in Memo CP-C/1
was not accepted. The _codesii<FY and^PY are kept. PY is reserved for a productyield under undefined experimental conditions where SIG or TTY do not apply.

7.

8.

The codes proposed in Memo CP-E/1, item 1), for the "BRANCH" subfield under
REACTION were not accepted since they were considered as not necessary fora unique description of the reaction and quantity measured.

9.

If someone wishes to code ions in Exfor under REACTION or elsewhere, this will
be done in the form 8-0-16(3+).

- 32 -

10.

The "multiple-reaction" formalism with pointers may be used for the isomeri
branches and ratios of the same reaction such that
total reaction cross-section,
partial cross-sections leading to isomeric states,sums and ratios of partial cross-sections
may all "be entered in a single subentry, provided that the target nucleus,
the incident particle and the outgoing particles are the same. Thispossibility is so far restricted to CPND.

I i § j _ ^ _ ^ _11.

For other codes, the existing dictionaries are used. The existing
limitations in the length of codes (up to 5 characters in Dictionaries 16-23)
are left unchanged. (Action 18 of the CPND meeting).

12.

Under the keyvrord FACILITY different pairs of facility codes and lab-codesof the form (FACIL, 3NMLAB) must be coded on separate lines.

13»

KACHAPAG had given some monitor reactions in coded form and some in freetext only. It was claimed that sometimes monitors seem to be doubtful andthat in such cases the free text was preferred. Meeting participants foundthis procedure not clear enough and suggested that an explanation in freetext would be desirable, for example in the form of a "COMMSM1 BT THE
COMPILER ...". It was then confirmed that monitor reactions should preferably be given in coded form supplemented,where necessary, by free text
explanation.

14*

Alphabetic characters (instead of a digit in KND Exfor) to be entered incol. 67, and in the first position of accession-numbers, are accepted, despiteof programming difficulties of some of the centers.

- 33 -ACTIONS

ActionOn

3

T

Marcinkowski

t o communicate t o NDS a l l m i s t a k e s found i n CINHA.

NDS

to forward any comments received under action 1
to the responsible centres.

a l l centres

advise Cinda-indexers to include i n the comments "NDG"
whenever appropriate.

W

4

| NDS

include in the CINDA 76-Book and a l l further editions
some form sheets for user—response.

NDCC

keep the other centres informed on the developmentof i t s new CINDA coverage control system.

all centres

inform NDS about their status of Cinda coverage
before book dead-line.

7 «T-

all centres

currently inform the other centres which reportand journal- series are not directly scanned for
Cinda, but covered through INIS-retrievals.

-r

all centres

CINDA-coverage of old references: primarily gaps
in main journal-series should be detected andcovered. Other missing entries could rather be
detected by checking the l i t e r a t u r e cited i nevaluation reports.

NDCC

provide the other centres with a reference l i s t
to the current Cinda-file.

9
10

provide NDS with coverage control-entries ofSoviet laboratory-reports.

/ ^

11

I Holden

12

NDCC Jv

look into the possibility of sending a l l CINDAl i s t i n g s i n the same quantity-sort as in the book.

NDCC

investigate the possibility of providing CINDAl i s t i n g s where records within a block are sorted
as i n the book.

NDCC

to prepare a memo concerning the replacement of"main" entries i n a Cinda block, and concerning
the operations i n a "headless" block.

i NDCC

before the next 4C-meeting report to the othercentres whether duplicates i n the CINDA f i l e canbe eliminated automatically.

NDCC

clearly define the use of the "no book flag" in
the Cinda-Manual, based on the minutes of the
11th a n d - j 2 ^ 4C-meetings.

13

14

15

16

communicate H. Goldstein's gap l i s t to the othercentres, as soon as i t i s available.

- 34 -

Action

On

17 1)

NDS

to request from NDCC at regular intervals CINDA retrievals of recent entries prepared "by NNCSC andNDCC for papers "by labs of areas 3 and 4» and toreview the blocking of these entries.

18> all centres

review the lab-dictionary and provide NDS with information and cross—references about related labs
and codes for inclusion in the Dictionary

19

NDCC

update the Cinda Manual according to Conclusion 3
about indexing of evaluated data

20 if. nall centres
NDCC
v

22

exchange views and information about existing practicein style and content of comments in data index lines.
^-a^rieve from Cinda, by area, the N3N and the^y*L PPGJentries and send them to the centres responsible.

all centres

revise the N3N and/SPG 'entries according to theConclusions 6 and 7—aliout Cinda-quantities.
replacafREMjand MPR entries by appropriate quantities.
change the definitions in the Cinda-book according
to these conclusions.

24

advise the Cinda-indexers on the correct use of LDL,
based on Conclusion 8 O

25combine the definitions of T5L given by Holden andGoldstein, and by NDS, for inclusion in the
Cinda-Manual.

26

NDCC

2
27 '

update the Cinda-4Ianual according to the revisions
agreed in the Conclusions 6-12, i.e. for thequantities: NXN, PPB, RIA, RIR, RIG, LDL, TSL, R M
and NPR; and for the metastable state of the target.
issue a memo about the agreed revisions of quantity
definitions, including the codes and internal
numerical equivalents.

28

NDCC

investigate how "neutron" as a target can be enteredin Cinda, and to contact NDS how this would affectthe book printing programme.

29

NNCSC

issue a Lexfor entry stating for which quantities
the target "neutron" is entered.

Such retrievals will be made at NDS from every Cinda tape received.

'

Done by Memo 4C-2/73.

2'

- 35 ActionOn

30 ^' /yNDS

include the French Fission Product Library (Blachot)
as well as ENDF-201 in the handbook section of the
Cinda-book.

31

cen

"*'resprepare 4C-memos containing proposals for the future
Ginda publication schedule from 1978 onwards, bearing
in mind the recommendation of the 8^ INDC-meetingof publishing an archival Cinda-book for the older
literature.

31a

NNCSC, NDCC

to remind Cinda indexers of using the "cosmetic"
indexer symbols where appropriate in order to reduce
the noise in the supplement books.

32

Dunfordreport to NDS about any changes in the submissionof US WRMDA information after the May 1976 USNDC
Meeting33

fxy(continuing action 44 from 11th 4C-meeting) toinform other centres about documentation ofevaluations and about evaluations or comparisonsof available evaluations going on within thecentre's area.
(continuing action 43 from 11th 4C-meeting)try to get from users feed-back information on
status and quality of evaluated data files.

34

send the preprints of 75 Kiev Conference aboutcomparison of different evaluations to NDS.
initiate translation of these reports anddistribute to the other centres.
to provide the other centres with any information
available about which types of data were never orrarely requested and whether preliminary data areneeded by customers.
NDCC
CJD
NNCSC

respond to Memo 4C-3/165 concerning completenessin EXPOR.

39

all centres

communicate to the responsible centres any complaints
on adequacy of experimental data supplied to users
and to data specialists' meetings and conferences.

40

all centres

the members of centres who attend conferences ortechnical meetings should communicate any material
on new data to the centres responsible.

3) Done in the CINDA 76/77 book.
4) According to letter by C.L. Dunford of 16 August 1976, there will be nochange in the USERDA publication policy concerning the US request list.

- 36 -

ActionOn

41

all centres(continuing action 29 from 11
4C-meeting)
It would be desirable for all centres to send astatus list of Exfor entries when sending a
Trans-tape (status list to include: data setscompiled but not yet transmitted and data sets
being compiled).

all centres(action 31 from 11
4C-meeting continuing)
Compare the translated SCISRS-I data (50000 and
80000 series tapes) with regular Exfor entries andcommunicate correspondences. Continue to clean up
the 50/80 000 series.
apply the new check programme to the next EXFORtape and provide the other centres with thechecking specifications used.

R
43

CJD

NDCC
NDS
NNCSC

send the output of the checking of this tape
to CJD.

45

NDS

request from NDCC those EXFOR entries for retransmission where errors have been found.

46

NDS

retransmit TRANS-Tape 3020 in 7-track format to CJD.
for the time being tapes sent to CJD should startwith a short dummy file.
write a Memo about compiling in EXFOR different
results for the same isoquants obtained bydifferent ways of analysis from the same experiment.
Such data have to be entered into different subentries, related by some status code.
when quoting errors, include in 4C-Memos precise
reference to the EXFOR-Manual.
transmit changes in the EXFOR Manual to the othercentres at latest about one month after a
4 Center-decision has been agreed or after thedraft minutes of a 4C-Meeting have been received.

all centres(action 25 from 11
4C-meeting continuing)
review Exfor Manuals in order to make them morecompatible with checking programme specifications,

all centres(action 26 from 11
4C-meeting continuing)
Exfor user (e.g. experimentalists) Manuals preparedat each centre should be exchanged between centres
for comments and suggestions.

53

NNCSC

(action 28 from 11
4C-nieeting continuing)
to investigate the possibility of restructuring
EXFOR/liEXFOR manuals so as to separate the format
material from the procedures material.

54

all centres

send suggestions for reports to be referred toin the LEXFOR Manual to NNCSC.

51

- 37 -

Action

On

55

MCSC

prepare detailed analysis of the problems involvedin converting neutron—EXFOR to generalized EXPOR
as a basis for an implementation schedule as soon
as possible after the meetings.

56

all centres(action 2 from 10(/

4C—meeting continuing)(a)Centres having received specialized compilationsin any format should signal their existance toother centres.

(b)

Inform interested centres of any significant
changes in EXPOR.

57

all centres(action 29 from 10
4C—meeting continuing)
Requests from other centres should be acknowledged
within a few days of receipt, giving a detailed
status for each request, including "no data available" if applicable.

58

all centres(action 30 from 10
4C—meeting continuing)
Inform the other centres when initiating a data
review or special-purpose compilation, so thatappropriate data may be transmitted with preference.

59

MCSC

inform the other centres about the availability of
the Nuclear Data Project capture gamma ray andother computerized data files.

— ^8 —
Appendix A

THE CJD PROGRESS REPORT
1* Prom April 1975 the tapes 4022-4025 with 75 works havebeen sent to other centers. Other 65 works are in process.
Thus the status of compiling into EXPOR is as follows:
TIELUS"*

Period.' Total] mi tted••• I n P r o c e s s l^ta on request

1959-1975
423
281
85
57
The number of the works sent is 67%, and that sent and inprocess is 87% of the total number for the period shown intable. The automatizied card index of works suitable forcompiling into EXPOR has been developed.
Following the decisions of the INDC the CJD provided firstand foremost compilation of the values within interest of thetechnical subcommitties of the INDC.
2. The evaluation of full files of Cr and Ni is finished in
the CJD. At present these data are in process of putting into
the SOCRATOR format. The articles with a description of theseevaluations are being written. The work on theoretical analysisof the threshold reactions in the frameworksof the statistical theory started.
3» After the 1 1 t n Pour-Centre meeting the CJD has sent to
the NDS full files of U-235, Pe, D, Erbium isotopes(Er-162, 164, 166, 167, 168, 170 ) as well as the 26-groupconstants system (BNAB-70) for 45 isotopes.
4» A comparison of group constants obtained from the evaluated UK data library ( for Pu-239, U-238 and U-235 ) withthe group constants of the BNAB system has been made. The
results have been published in the proceedings of the 3-d
Kiev Conference on Neutron physics. At present a comparisonof neutron cross sections from the evaluated data library
ENDL, SOKRATOR , ENDP/B - IV ( for file available ) is being
carried out.
5« During the period after the 11
Pour Centre meetingthe following issues of "Jadernye konstanty"have been published:
No. 17, 18, 19, 20. Prom issue No. 17 CJD is starting regu lar sending into the NDS 35 copies. The CJD has prepared foredition the proceedings of Kiev conference on Neutron Physics.

Appendix A

6» In 1975 the CJD answered 110 requests on nuclear data:on documents - 30,
on evaluated data - 58,
on experimental data - 2 2 .
7. In 1975 the CJD published about 30 articles, preprints
and reports on all directions of the CJD's activities. The
CJD in heading the methodical activities on theoreticaltechniques in nuclear data evaluation.

List of data sets being compiled in CJDNo» |First author•*

Reference•1.

Tolstikov

AE
YFI

23
6

2.

Tolstikov

3»
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.

Fomushkin
SalnikovDjachenko
Alkhazov
Vertebny
Djachenko
Vorobeva
Dovbenko
YurovaPetrzhakGroshev
Zakharova
Maksjutenko
Vorobjeva
Petrzhak
Vertebny
Bergman
Kovrigin

AE
24
YFI
6
YF
14
YK
6
FEI-204
YF
15
YFI
6
YF
17
YF
10
YFI
6
AE
36
YF
15
IZY
34
YF
16
YF
13
YF
9
AE
33
UFZ
13
KIEV
1
YF
19

6

1
4
3
1
5
4
4
2
2
4
4

j

j Reaction

j

•

•

•

566
11

6?
68

187
11
73
189
22
11
696
491
3
66
860
768
649
293
296
2
679
144
715

Element
_?4j

c s

_133>

e s

_192

ш

GE

68

NQ

SE-80

71
69
70
72
68
73
69
68
74
72
70
72
71
69
72
68
71
74

NF
EK-249, CF-249
BH
FE, CU.NB
FRS,HF
PU-238
MJ
CM-244RES
GD
YLD,KEFRAG PU-242
i
FRS
U-235, Ù-238°
NG
MN-55,GA-69,Ga-71 ,M0-98
YLD,FRAG
U-238
NF,YLD
NP-237, NP-238
NG
BA-136, BA-138
NF
U-235
NUD
PU-239, U-233
FRS
U-239
YLD
PU-239, U-233
LDL
DY-162,HO-165,ER-162,164,166,167
NG
RE
bDL
SD

N | First author
21• Vertebny
22. Vertebny
23. Vertebny
24. Vertebny
25 • Oveerhkin
26. Zhuravlev
27. Belanova
28, Broder
29. Tolstikov
30. Belanova
31. Dovbenko
32. Salnikov
33. Broder
34. Vorobjeva
35. Dovbenko
36, Savin
37. Belovicky
38, Aldea
39. Bak
40. Petrzhak*

Reference•

KIEV 2 104
UPZ 13
4 605

\

73
68

AE 34

5 355 73

YFI 18KIEV 2
YK 19
AE 38
IZV 32
AE 24
AE 37
AE 27
YFI 6

32 74
131 73IZV 32IZV 25
YK-15
YPI-17
YPI-20Leningrad
YPI-17YPI-8
AE 28
KIEV 2

Reaction\

SCAT,TOTSCAT
TOT,SCAT
STP,NG

ND-142,143, 144, 145, 146,148,15
HO,LU,DY

ACT

TC-99
Isotopes of TH
AM-241
V, MN
SN-122, SN-124, SB-121, SB-123

Element

V
PT-19O,192,194,196,198

3 75
1 29 75
2 254 68
65 76 68
5 437 74
5 406 69

NF,RIP68
4 653 68
309 61NG

MN-55, GA-69, GA-71, MO-98

DIN

TN-232, U-235, U-238

DNG

SB

3 74

NUBAR

38 74
11 75

NG
NOT
NP
NG

U-238, PU-240, PU-241
ZN-68
AL,PE
PB, BI
SM-148RIP

U, PU, AM

NUBAR

CP-252

3

348 7528 74
69
4 359 70

44 71

RES
DIN
NG
RES

es

X

No.
41.
42.

43.
44.
45.
46.
47.
48.

•
* First author•Karzhavina
Nefedov
Belanova
Panitkin
Belanova
Rjabov
Zakharova
Nurpeisov

•
*
*
*
•
'
Reference
• YFI
30
17
KIEV
4
155
38
AE
6 430
1 17
AE
39
AE
39
5 369
AE
4 351
24
10
YPI

YP

18

4 710

PEI-543
AE
39

3 199

74
73
75
75
75
68

73
74
75

•
•
•
Element•\ Reaction •• RES
CD-111 ,113, GD-157,DY-161,163
NUD
CF-252RES
TA-181
NG
U-238
RES
C1&-244 , CM-245, CM-246, CM-248
ALPHA
U-235, PU-239
UP

U-233, U-23 5

NUBAR

U-233, U-2 38, PU-239
IV)I

- 43 Appendix B

CCDN PROGRESS REPORT TO THE
12TH 4-C MEETING
Vienna, 26-27th April, 1976

CCDN General Situation
During 1975, the CCDN continued to operate in the fields
traditionally belonging to its mandate : compilation of experimental
neutron data and of references to neutron data publications.
Several changes have, however, taken place both in the
distribution of tasks among the physicists and, at operational level.
In particular, all technical problems ruled by the 4-C agreements
have been concentrated in the hands of one physicist, the experimental datacompilation group has been reinforced (2J persons should work on this task
when the full staff complement is available), and the compilation itself
reorganized by the creation of a file based on progress reports, visits toconferences, personal contacts with laboratories, etc. which gives thehistory of all experiments under way or performed in the countries of the
CCDN's zone. It is expected that this file - now almost complete - willallow the Centre to play a more active role in the collection of data.
Finally, the computer operations connected with data compilation andexchange have been streamlined by the implementation of two programs, oneof which produces data in both the EXFOR and NEUDADA formats in one run,and the other which converts incoming EXFOR tapes into the Centre's
internal format.
CINDA
Following an action agreed at the last 4-C meeting, a special
effort was made to thoroughly revise the CINDA entries, their blocking andcompleteness for the post 1970 publications.
The blocking required the implementation of the Kill-Link
operation in the CINDA system.
Entries from all the CCDN countries (except Japan which was notcovered owing to lack of time) have been blocked. It is estimated that for
the CCDN zone only, some 5,000 blocks (>12,000 CINDA entries) have.been
moved and linked to other existing blocks (or entries).
Relations between the CINDA Readers and the CCDN have beenreviewed and reinforced by a meeting to which all the indexers wereconvened. As a result, the coverage effort has been partially re-arranged,
the main features of the new coverage control system have been submitted
and approved, and the adoption of a few new quantities or the re-definingof some of those already existing have been discussed.
The coverage control system is now being implemented.
Experimental Data
With the implementation of the new program mentioned above,
operations for compilation and conversion have been speeded up and theexchange with the other Centres is now running quite smoothly.
The exchange backlog of those data compiled in NEUDADA format
during the period 1970-1974 has now been almost entirely discharged : only- 44 the data stemming from two laboratories - Munchen Technische Hochschule (MUN)
and the National Physical Laboratory (NPL) Teddington [some 20 works with
about 200 subworks] - remain to be converted.
The shortage of manpower (2 man years (physicists) of vacancy in1975) prevented the CCDN from keeping up to date with the compilation ofvery recent data (post 1974). It is estimated that about 100 works constitutethis backlog.
WRENDAThe CCDN collected about 250 new requests for measurements andforwarded them to NDS in the agreed format. 130 requests were withdrawn
by the reviewers.
Service
The number of requests was of the same order of magnitude as inprevious years : approximately 300 requests, of which
46% were for evaluated data,
44% were for experimental data,
and 10% concerned CINDA.

LL/lat
22.4.1976

- 45 Appendix C

Progress Reportof
National Neutron Cross Section Centertothe Twelfth Four Centres Meeting
April 26-27, 1976

I. CINDA
NNCSC has maintained regular literature coverage of neutron physics
literature produced in the US and Canada during the past year. Our checking programfor new CINDA entries has been implemented and upgraded on the basis of the extensive
testing in the past year such that most errors on our entries are now due to badblock or serial numbers. Norman Holden, previously responsible for the literature
coverage and CINDA entries, has been replaced by Gail Waite.
During the past year an extra 8 man-month effort was supplied on the CINDA
activity in order to complete the blocking of all references to data transmitted by
NNCSC in the regular EXFOR exchange, to add data index lines to the blocks and to
add "no book" flags to obsolete references. More than 12,000 cards were transmitted
to CCDN for processing between 1 December 197 5 a n d 1 March 1976. All blocks foraccession numbers below 10504 which have been transmitted on tapes 1001 through 1049
have been completed except for 10 accession numbers. In addition, most entries withthe lab code USA have been reentered with the appropriate lab code. Confusion andinconsistent coding among MTR, ANC, AGN, AND PPO laboratory codes was eliminated aswell as among ABD, BRL, NEL, and NDL.
During the next year we intend to revert to a one man-level for CINDA.
In addition to the regular literature coverage which will include the creation of blocks
for all new references, we shall complete the blocking related to all transmitted EXFOR
accessions.

II. EXFORThe activity in support of the experimental data library was supported at
a two man-level during the past year. Thirteen EXFOR tapes were transmitted containing
152 new works and 150 revised works. The number of data set "in process" has been
reduced by about 25%. Most of the revised EXFOR entries resulted from the extensive
cross checking of EXFOR and CINDA during the CINDA clean up activity described above.
After completion of the library upgrade activity in support of the BNL-325
publication, a program to upgrade the SCISRS-I translation for area 1 was undertaken.
This effort is nearly complete. All older data used in BNL-325, but missing from thelibrary, were added. All bibliographic data (SAN001) has been checked and corrected
where necessary. All data sets now pass successfully through our extensive checking

- 46 -

program. Remaining now is the reorganization of the data tapes by reference (rather
than ZA) and the conversion of accession numbers to the 10000 series, after which thedata will be transmitted to other centers. SCISRS-I translations for areas 2 through4 will be corrected so that they pass successfully through our checking program andthen retransmitted.
After completion of our checking program (specifications were distributedat the previous 4-C meeting), our large backlog of EXFOR transmission from the othercenters was eliminated. In some cases, extensive corrections, particularly'for thosetapes coming from CJD were required.
Several man months effort has been expended to implement various featuresusing "pointer". The results of our effort have been described in a 4-C Memo. Our
implementation philosophy regarding "vector common" was to convert incoming data to
the multi-dimensional table format, this being least disruptive to the multitude ofprocessing programs as well as being the first step in generating a computation format.
Two revisions of the LEXFOR and EXFOR Manuals have been distributed.
During the next year, it is planned to upgrade the experimental data librarywith respect to resonance parameters so that all data referenced in the recent publication of BNL-325 Vol I will be in the library.

III. ENDF
During the past year the Fission Product and Dosimetry files from ENDF/B-IV
have been released for international distribution. Work is progressing on the production of ENDF/B-V, due for completion in late 1977. Already finished are the standard
cross sections.

IV. Custom Services
The statistics for requests processed between 1 January 1975 anc* 1 January
1976 are attached.
With completion of the SCISRS-I translation clean up, we will at last start
work on an improved retrieval system and computation format for experimental data.

V.

Evaluations

The evaluation of (n, particle) cross sections of all the stable isotopesof nickel, chromium and manganese from threshold to 20 MeV has been completed. In
addition, the resolved resonance region of manganese has been fitted up to 250 keV.
These will be used as parts of the evaluations for the elements nickel, chromium andmanganese for ENDF/B-V.

Appendix C

VI.

Publications

The new edition of BNL-325 Vol. II is now in press and should be available
in the summer 1976. Summary documentation (ENDE-201) of E N E F / B are now available.
The Codes and Formats Manual (EttDF-102) will be available in April. A new publicationof decay schemes for fission product nuclides based on EN]]!?/!}—IV data will beavailable before the end of 1976.

VII.

Charged Particle Data Center

The decision has been made to move charged particle data compilation
activities in the US to the NNCSC. As envisioned starting in the fall of 1977, thecenter will organize and maintain a bibliographic data base for CPND within thelimitations agreed by the international CPND network. Some limited data compilation
will be done in support of the KFK effort. Also some evaulation activity for dataneeded in fusion and medical applications will be initiated.

VIII. Nuclear Structure Data Compilation and Evaluation
In March 1976, a network of data centers was established to promote thetimely evaluation nuclear structure and decay data. NNCSC has assumed responsibility
for the organization and operation of the network and for providing the interface
with any international evaluation activities. In addition NNCSC will provide customer
services and do some A-chain evaluations and perform some horizontal evaluations.

IX.

Secretariat to ERDA-NDC

In May of 1975, NNSCS was assigned the duties of the secretariat to ERDANDC. As such, the Head of NNCSC is Secretary to ERDA-NDC and the center will be
responsible for nuclear committee document distribution within the US and for thecoordination of all ERDA-NDC documents.

Request S t a t i s t i c s
TABLE la1 Jan. 1975 to 31 Dec. 1975
Area 1
Numberofr e q u e s t sford a t aCountry
OriginExperimental

Evaluated

Bibliographic

Codes

Documents

Total

USA

124

187

11

20

105

447

15

0

Canada

F

00

Total

128

190

11

22

111

462

Request Statistics
TABLE Ib
1 Jan.

1925 t o 31 D e c .

1971

A r e a _1.
N u m b e ro fr e q u e s t s

f o r

d a t aEvaluated

Bibliographic

Codes

Documents

Total

Total
Previous Year

96

9

13

48

255

158

43

2

1

31

100

99

48

0

6

26

92

79

3

0

2

6

15

3

190

11

22

111

462

339

Originating
Orgainzation

Experimental

Government Lab

89

University

23

Industry

12

Other

4

Total

128

CD

O

Request

Statistics

TABLE I c
1 J a n 1975, t o 31 Dec. 1975.
Area _1
N u m b e rofr e q u e s t s

f o r

d a t aRequest
Disposition

Experimental

Evaluated

Bibliographic

Codes

Documents

Total

Total
Previous Year

Fulfilled

128

190

11

22

111

459

338

Partially
Fulfilled

1

0

0

0

0

0

1

Unfulfilled

0

3

0

0

0

3

0

Standing

0

0

0

0

0

0

0

128

190

11

22

111

462

339

Total

1

Data Dissemination
TABLE II
1 Jan. 19_75 to 31 Dec. 1921
Area 1

Data Type

AmountExperimental

23,154

Data Sets

Evaluated (Total)

11,711

Data Files

ENDF

8,628

Data Files

OTHER

3,083

Data Files

Bibliographic

101

CINDA Entries

Codes
and
Documents

111

codes

173

documents

Miscellaneous

60

Requests

containing

1,320,049 Data Points

I
CD

h
X

TABLE IIIZQA REQUEST STATISTICS
1 Jan. 1975 1;o 31 Dec. 1976
Area 1
INEL.
SCAT.
(INL)

OTHER
SCAT.
(C/S)

ELEMENT

TOTAL
(TOT)

ELAS.
SCAT.
(EL)

1-H

5

4

2-He

1

1

3-L1

10

13

10

9

4-Be

5

5

4

1

5-B

3

5

5

2

6-C

11

14

8

5

7-N

2

4

8-0

3

7

9-F

1

1

1

RES.
PAR.
(RES)

6

GAMMA &NEUTRON
EMISSION(NG)8OTHERSTOTALREQUESTS

1

24

3

5

11

16

90

4

7

1

3

5

19

7

27
49

7

25

18

6

94

3

2

15

21

2

49

5

3

17

16

1

52

3

5

1

12

9

50

3
2

3
1

2

5

12-Mg
13-A1

FISSION
(NF)

19

2

10-Ne
11-Na

CHARGEDPARTICLE
EMISSION
(NX)

3

5

4

18

6

3

16

11

4

3

31

12

29

14-Si

9

6

15-P

2

6

10

41

2

67

4

5

1

10

5

16-S

2

2

2

1

2

3

5

17-Cl
18-Ar
19-K
20-Ca
21-Sc

2

1

1

22-Ti

7

3

4

25-Mn

5

2

2

26-Fe

1

7

2

23-V
24-Cr

27-Co
28-Ni
29-Cu

1

6

19

1

53
15
8

6

8
11

15

18

36

3

2

6

4

16

11

9

34

5

2

7

17

19

3

73

11

14

1

36

5

8

1

14

16
1

1

18

21

3

1

11

37

2

54

3

2

2

29

13

8

30-Zn

8

12

20

31-Ga

3

2

5

Appendix C- 53 -ELEMENT

TOTAL
(TOT)

ELAS.
SCAT.
(EL)

INEL.
SCAT.
(INL)

GAMMA &
RES. NEUTRON
PAR. EMISSION
(RES)
(NG)

OTHER
SCAT.
CC/S)

CHARGEDPARTICLE
EMISSION(NX)FISSION
(NF)

OTHER

TOTAL
REQUEST

32-Ge

7

4

1

12

33-As

1

1

1

3

34-Se

4

2

1

7

4

3

1

9

36-Kr

8

1

9

37-Rb

5

1

6

38-Sr

7

1

39-Y

2

2

35-Br

1

1

9

4

40-Zr

7

10

4

4

22

25

28

12

112

41-Nb

3

5

3

4

4

9

6

5

39

42-Mo

1

10

3

4

1

43-Tc

4

19

2

1

7

5

5

2

12

21

2

26

18

4

3
1

18

2

3

35

10

1

14

45-Rh

4

46-Pd
47-Ag
1

1

2

49-In

1

2

50-Sn

1

1

8
1

1

51-Sb

6

52-Te

9

53-1

11

54-Xe

13

1

1

57-La

4

58 -Ce

3

1

59-Pr

7

4

60-Nd

31

16

61-Pm

2

62-Sm

10

63-Eu

4

64-Gd

8

65-Tb

1

6

12

1
1

5

1

15

1

7

6

1

16

1

1

13
13

4

10

4
1

22

1

7

1

1

13

9

2

2

17

8

24

8

22

39
4

17

2

127

14

30

13

4

78

4

17

8

6

39

29

38

27

7

127

2

1

1

5

2

2

27

14

55-Cs
56-Ba

5

1

44 -Ru

48-Cd

14

16

53
6

- 54 -

ELAS.
SCAT.
(EL)

INEL.
SCAT.
(INL)

OTHER
SCAT.
(C/S)

GAMMA &
RES. NEUTRON
PAR. EMISSION
(RES)
(NG)

FISSION
(NF)

OTHER

TOTAL
REQUEST

12

6

28

6

4

2

16

1

24

ELEMENT

TOTAL
(TOT)

66-Dy

2

8

67-Ho

4
1

CHARGEDPARTICLE
EMISSION
(NX)

68-Er

1

10

11

69-Tm

1

9

2

1

13

70-Yb

2

12

11

1

26

3

6

3

12

21

25

14

83

73-Ta

14

3

1

18

74-W

28

3

3

34

7 5-Re

17

3

3
1

23

9

1

18

71-Lu
72-Hf

9

2

2

1

9

76-Os
77-Ir

14

3

78-Pt

1

10

21

6

79-Au

1

1

10
11

.3

32

80-lg

2

2

1

5

81-Te

3

4

1

8

1

2

2

2

82-Pb

1

1

1

83-Bi

1

1

1

1

7
7

88-Ra

1

89-Ac
90-Th

" 1

2

3

12

5

1
2

92-U-000

21

3

1

91-Pa

1

1

1

2

1

3

49

1
1

10

92-U-230

2

2

92-U-231

2

2

3

4

8

6

31

2

3
1

43

7
81

8

115

92-U-232

1

92-U-233

1

192-U-234

1

92-U-2353

3

92-U-236

2

1

1
1
2

2

1

13

2

6

4

2

10

92-U-237
92-U-238

2

92-U-OKi

1

1

2

1

19

2

12
25

3

1

4

21

1

49

1

2

Appendix C- 55 -

TOTAL

ELAS.
SCAT.
(EL)

INEL.
SCAT.
(INL)

OTHER
SCAT.
(C/S)

GAMMA &
RES. NEUTRON
PAR. EMISSION
(RES)
(NG)

CHARGED£SS0(NX)FISSION(NF)

ELEMENT

(TOT)

93-Np

3

2

2

3

8

11

94-Pu-238

3

1

1

2

6

94-Pu-239

2

2

2

6

12

14
31

94-Pu-240

1

1

1

3
1

2

94-Pu-241

1

94-PU-242

3

OTHER

TOTAL
REQUEST
34

94-Pu-000

2

2

5

94-PU-243

1

94-Pu-244

31
68

20

4
9
1

4

25

1

31

6

8

3

29

2

3

5

1

3

5
1

1

94-Pu-245

27

95-Am

4

1

3

10

21

3

42

96-Cm

1

2

1

3

18

5

30

97-Bk

1

4

98-Cf

4

6

5
10

99-Es

1

1

2

TOTAL

202

170

102

75

186

989

661

348

215

2948

- 56 -.
,. • _
Appendix D

RECENT NNCSC PUBLICATIONS

1.

Neutron Cross Sections (Third Ed.) Mughabghab, S. F. and Garber, D. t.
Volume 1, Resonance Parameters. BNL-325, July 1973
Garber, D. I., Kinsey, R. R. Volume 2, Neutron Cross Sections.
in press

BNL-325, .

2.

Garber, D. I. et al.
Volume 1, Z=l to 20.

Angular Distributions in Neutron-Induced Reactions.

3.

Garber, D. I. et al.
Volume 2, Z=21 to 100.

Angular Distributions in Neutron-Induced Reactions.

4a.

Data Formats and Procedures Manual for the ENDF Neutron Cross Section
Library. BNL-50274 (ENDF-102)

4b.

Description of the ENDF Processing Codes and Retrieval Subroutines.
BNL-50300 (ENDF-110)

4c.

M. R. Bhat, ENDF Processing Codes for the Resonance Region.
(ENDF-110), June 1971

4d.

Garber, D.I. ENDF/B Summary Documentation.
2nd Edition, October 1975

4e.

CSEWG, Benchmark Specifications.

BNL-50296

BNL-17541 (ENDF-201),

BNL-19302 (ENDF-202), November 1974.

CSEWG, Benchmark Testing of ENDF/B-TV (ENDF-230) Vol. I and Vol. II,
Informal Report. In press.
5.

Bhat, M. R., Magurno, B. A., Pearlstein, S. and Scheffel, F.M.
data for CTR Related Projects. BNL-19344 (ENDF-212), Oct. 1974.

6.

Bhat, M. R. Multi-level Effects in Reactor Calculations and the Probability Table Method. Proc. of the CSEWG Resonance Region Subcommittee Meeting,
Brookhaven National Laboratory. May 8. 1972. Bhat, M. R. Editor, BNL-50387(ENDF-187), July 1973.

7.

Bhat, M. R., Goldberg, M. D., Kinsey, R. R., Prince, A., and Takahashi, H.
Neutron and Gamma Ray Production Cross Sections for Silicon. BNL-50379(ENDF-186), March 1973.

8.

Bhat, M. R. Neutron and Gamma Ray Production Cross Sections for
Nickel. BNL-50435 (ENDF-207), Oct. 1974.

9.
109

NuclearBhat, M. R. and Prince, A. Evaluated Neutron Cross Sections for X ° 7 Ag,
A g , and i%i3 Cs. BNL-50383 (ENDF-163), April 1973.

10.

Takahashi, H. Evaluation of the Neutron and Gamma Ray Production
Cross Sections of 1 6 1 E u and 1 5 3 E u . BNL-19455 (ENDF-213), Nov. 1974.

11.

Takahashi, H. Evaluation of the Neutron Cross Section for l S 3 E u and A 6 *Eu.
BNL-19456 (ENDF-214), Nov. 1974.

- 57 -

Appendix D

Publications (cont'd)

12.

Bhat, M. R. and Mughabghab, S. F. Evaluated Neutron Cross Sections
tor the Stable Isotopes of Xenon. BNL-50374 (ENDF-185), February 1973

13.

Mughabghab, S. F., Prince, A., Goldberg, M. D., Bhat, M. R. andPearlstein, S. Evaluated Neutron Cross Sections of
Au. BNL-50439(ENDF-215), Oct. 1974.

14.

Prince, A., Drake, M. K., and Hlavac, P. An Analysis of the
Pu Neutron
Cross Sections from 20 keV to 20 MeV. BNL-50388 (ENDF-190), April 1973.

15.

Takahashi, H. Evaluation of the Neutron and Gamma Ray Production
Cross Sections for " Mn. BNL-19454 (ENDF-208), Nov. 1974.

16.

Mughabghab, S. F., Krieger, T. J. Neutron Cross Sections of
below 100 keV. BNL-NCS-50468 (ENDF-229), April 1975.

17.

Edited by Pearlstein, S.
(ENDF-217). March 1975.

Seminar on

18.

Edited by Magurno, B. A.
(ENDF-216). April 1975

ENDF/B-IV Dosimetry File.

19.

NNCSC, Secretariat. Reports to the ERDA Nuclear Data Committee.
BNL-NCS-20406, ERDA/NDC-2. May 1975

20.

Magurno, B. A. ENDF/B-IV Cross Section Measurement Standards
BNL-NCS-50464 (ENDF-225) Aug. 1975.

21.

BNL Study Group. Study on the Compilation and Evaluation of Nuclear
Structure and Charged Particle Reaction Data. BNL-NCS-20573. Oct. 1975
(Request through ERDA - Division of Physical Research)

22.

Pearlstein, S. Evaluated Nuclear Data Files. Advances in Nucl. Sci. andTechnology, 8, 115-139 (1975)

23.

Pearlstein, S. Resonance Region Analysis Without Resonance Parameters.
BNL-19715. Nucl. Sci. and Engineering: 5£, 354-360 (1975)

24.

Rothenstein, W. Thermal Reactor Lattice Analysis Using ENDF/B-IV Datawith Monte Carlo Resonance Reaction Rates. BNL-20446 Nuclear Science andEngineering (In press)

Co

2io

U Resonance Capture. BNL-NCS-50451
BNL-NCS-50446

In most cases publications are available through:
NTIS (National Technical Information Service)
P.O. Box 1552
U.S. Dept. of Commerce
Springfield, Virginia
22151

- 58 Appendix E

Brief NDS Report to the 1976 4C-tteeting
1.

STAFF

2.

1.1 Since the last 4C-Meeting A. Calamand and J. Lemley left the Section.
1.2 New staff are: R. Lessler. who works on Wrenda and the targets-andsamples program. R. Yasfhubian. who has previously been working as atemporary consultant and has now a fixed-term appointment, works ondata compilation and request services. 0. Schwerer. who is also involved in data compilation and request services.
1.3 For 1977 a a w physicist's post is likely to become available. This will
be devoted to neutron data in order to cover the increasing workload ofdata request services.
1.4 A new unit for Atomic and Molecular Data for Fusion is envisaged for 1977
within the Nuclear Data Section.
CHANGE OF PREMISES
2.1

In the new premises at Wasagasse, three kilometers away from the IAEA
main building, NDS was, for several months, separated from the computer.
Many compilation activities and request services got seriously delayed
during this period.
2.2 Meanwhile NDS has its own RJE station for card input and printer output,
linked to the Agency's computer by a telephone line. This serves mostof the needs of NDS except for magnetic tape handling. Repeatedly there
were difficulties resulting from transporting tapes to and back between
Wasagasse and computer.
2.3 Since the staff has to travel frequently between Wasagasse and Kirntnerring, NDS encounters an effective loss of manpower between 5 and 10 percent,
^.

CINDA
3.1

CINDA75 and its Supplement were published. The printing of CINM76 ispresently in a crisis, because the Linotron machine at Frankfurt hasgiven up its ghost. Several other machines are presently under consideration. We still have the hope that the publication date of CINDA76
will be delayed not more than two weeks.
3.2 The Cinda coverage of areas 3 and 4 has been reported in Memo 40-3/158
of 1976-3-4. There are no significant gaps except, perhaps, for some
USSR lab reports. A number of Cinda relevant articles from rare reportseries and theses has been found from IBIS retrievals.

Appendix E- 59 3.3 Considerable Cinda clean-up has "been done for area 3. The Exfor dataindex lines are up to date. However, since much of the clean-up wasdone before the LINK operation became effective, we have the problem of
a disturbing number of duplications. Also a number of recent entries
made at NNCSC and NDCC for labs of area 3 could not yet be blocked
systematically.
3.4 At the 1975 INDC Meeting the two-years publication cycle of Cinda has
been approved for the 1976/77 period. The centers have been urged however, to issue in 1978 an archival volume which would remain valid for alonger period, supplemented by periodical issues for new literature only.
EXFOR
4.1

4.2
4.3

4.4
4.5

5.

Compilation of Exfor data continued. Presumably, NDS is quite complete
for newest data. However, the backlog accumulated during the 1974 period
when several posts were vacant, could not yet be worked off.
The Exfor check program and the Exfor Edit program for customers havebeen improved.
The NNCSC Exfor tapes converted from SCISRS-1 were quite important for
many data requests. However, not yet all of them have been worked into ourmaster file.
The Exfor/Cinda dictionaries were frequently updated, without delay, whenever a new code was introduced.
The NDS "Exfor Manual is still maintained separately from the official
NNCSC Exfor Manual,though after the last NNCSC updates both Manuals
have again become more similar.

CUSTOMER SERVICES
5.1

CINDU-11, the new catalogue of data available from NDS, has been issued.
Its character has changed completely. Previous issues of CINDU had indexed
Dastar and Exfor data in detail, a function which has now been taken overby Cinda. The new issue of CINDU gives only more general information on
the numerical data libraries available, which include
experimental neutron data (5 libraries)
evaluated neutron data (ca. 15 libraries, depending on thedefinition of the term ^library")
photonuclear data (1 library)
charged-particle nuclear data (2 libraries)
nuclear structure and decay data (4 libraries).
5.2 The request statistics is attached. NDS now receives, on average, one
request per working day. Out of these there are about
1 request per week for evaluated data
1 request per week involving retrievals from Exfor3 requests per week of more trivial nature requesting a document
or a single data set.

- 60 -

Compared to the calendar year 1974 (which admittedly was low due tovacant posts) the data request and dissemination statistics have about
doubled.

6.

EVALUATED DATA
6.1

Several new evaluated data files were received from the other centers
and are gratefully acknowledged.

6.2

The processing of evaluated data takes an increasing amount of time at
NDS, part of which could be saved if there were fewer mistakes in thedata transmitted.

6.3

NDS has started a file in Exfor format for selected importantevaluated data which are not part of one of the established evaluateddata libraries. The file has the name VIEN (= various international
evaluated neutron data) and its accession numbers start with thecharacter V.

VIEN data will be transmitted outside the normal Exfortransmission.
7.

DOCUMENTS
7.1

For a list of documents translated and/or distributed by TJDS see
INDC(SEG)-53/u (June 1976).

8.

A n REVIEWS
8.1

The full report (planned as INDC(NDS)-64) on the third IAEA evaluationof the 2200 m/s and thermal Maxwellian neutron data of the main fissile
isotopes, a summary of which had been presented at the 1975 Washington
Conference, could not be completed, mainly due to the less efficientworking conditions at Wasagasse.

8.2

The work on the review of threshold reactions for reactor neutron
dosimetry continues.

9.

WHENDA
9.1

WRENDA75 has been published in June 1975.

WRENDA76 is being prepared.

9.2

New or changed requests have been received from Prance, Sweden, Switzerland,
Japan, UK, Germany F.R., Netherlands (all these through NDCC), Australia,
Bulgaria, German Dem.Rep,
The requests from USA and USSR remained mostly unchanged.

9.3

NNCSC and NEA transmitted the requests according to actions 21 and 22
from last 4C-Meeting.

Appendix E- 61 -

Exfor compilation statistics at NDS
Between 20 April 1975 and 20 April 1976 NDS transmitted in 5 transmission
tapes
44 new entries
22 revised entries.
On 20 April 1976 there were, considering post-1970 data,
6 entries in process
15 entries for which numerical data were requested from authors
but not yet received
15 works known yet no action was taken? works existing but not yet discovered by compilers (mainly datafrom area 3 published outside area 3 ) •NDS has transmitted 323 entries, excluding revisions, including pre-1970 data.
The Exfor compilation workload at NDS during the years is shown below.
"%he figure attached show.s
the number of Exfor subentries and records
produced per month. The 1972 peak is due to Dastar-Exfor conversion. The
1974 valey is due to vacant posts; NDS could not yet catch up with thebacklog accumulated during this period, the amount of which has not yetbeer, analyzed. The two sharp peaks in 1975 a r e due to the compilationand later revision of the DDR nonelastic data. In 1976 compilation
suffered from work devoted to an increasing number of requests.
The present contents of the Exfor Library is shown in the attached tabled
which however excludes the 5O000 to 8O000 series.

Number of subentries transmitted by NDS

1971
1972
1973
1974
1975
1976
until April

newrevi sed

384
1905

8
228

1211

180

765

27

1283

759
85

93

- 62 -«• of&to*

60

kc

zo

or

HOCC

r
1

WMf

1

Contents of Exfor Libraiy 12 April 1976
area 1

area 2

area 3area 4areas 1-4

511

506

323

261

1601

5720

3820

2364

2288

14200

537 ooo

639 000

40 5oo45 5001.3 million

723 000

732 000

121 000

96 0001.7 million

Number of entries *subentries *data records *Total records transmitted *** excluding revisions** including revisions
Last Exfor tapes included:

ON

1050

2028

3020

4024

I

S
I
ts

- 64 STATISTICSTABLS l a
AREA 3R E Q U E S T

S T A T I S T I C S
TABLE l a

1 Apr. 1975 - 31 Mar. 1976
A
REA
ARHA
Country
originExperimental

EvaluatedСПГОА
retrievals

3

RE1IDAj Documents
retrievals

Total
(75)

I

Total
previous Year[ (74)i
AREA 1MCSC
USA
Canada

3
1

2

22

3
25

2
13
2

10

16
5
1

AREA 2
NDCC
AUS
BLG
CCE
CER
FR
GER
ITY
1ŒD
SAC
SWD
SWT
TUK
ш

4
2

3
2

3
1
2

5
2
1
1
7
17
3

1
1
7
16
3

1
1

1

1

1
2
1

•••
':

*

>£

h

8
3

2
2
2

1
'

.

7

9

1
1
2
4
3

AREA 3
ARG
AUL
BAN
BZL
CSR
DDR
ffiCG
HUN
IAE
ИГО
ISL
KOR
LEX
РАК
PHI
POL
RUM
SAP
UAR

1
3
3
2
1
2
1
2
1
3
3

4
1

1
1

2
3
2
1
2
4

5
3
6

9

4
1
1

1

9
1

1
2
12
5
1

6
4
17
14
1
2
3
!
9
6

1
l
1
4

!

3
l

2
2
1
2

YUG

i

!

VSIi
ISPRA

1

ZZZ

6
3

1
1
3
1
1
1

1

3

2
2
2
2
7
8
5
1
14
7
1

4

4
4
3
2

¡

4

5

x

.

1

1

J

1

Appendix E- 65 -Country
originExperimental

Evaluated

cnroA
retrievals

HENDA

Documents Total

retrievals

(75)

Total
Dreviev.s v - i r(74)

AKSA 4
CJD
CCP
DUB

TOTAL

2

1
2

47

51

4

5

2

2
1-1

7
15

119

224

3
1
1

135

STATISTICS
TABLE I c
AREA 3 -R E Q U E S T

S T A T I S T I C S
TABLE I c

1 Apr. 1975 to 31 Mar.1976
AREA 3
Request
Disposition

Fulfilled

N u •n b e ro fr• e q u e s t sExperimental

Evaluated

GINDA- retrievals

31

29

5

for

d a t a• retrievals•Documents

Total

Total
Previous
Year

2

109

176

119

REUDA

ON

Partially
Fulfilled

5

Unfulfilled

18

7

2

2

8

28

7

119

224

135

2

11

2

Pending

11

9

TOTAL

47

51

5

2

Appendix E- 67 -STATISTICS
TABLE I I
AREA 3

D I S S E M I N A T I O N

S T A T I S T I C S

TABLE I I
1 Apr. 1975 t o 31 Mar. 1976
AREA 3

Araount

Data Type
Data S e t s(previous
year)

Data Points

Experimental (total)

3064(1690)

303 944

Exfor 1-4

1892
1035

192 60260 393

33
29
70

480
916
49 53815

Exfor 5-8

Karlsruhe C.P. Library
Musgrove Lib. of strength function
NHCSC Photo-neutron Lib.
DastarEVALUATED (TOTAL)

5

5408

vprev.
year)(118.657)

2583

Copy of entire available librarydisseminated(included under "Data Sets")
AUL + BOL
BOY ADDASTARDEVILLERSCHARGED PART-KNDF

281

55
396
635
612
40

ENDF/B-IV 7 s t .
ENDF/B-Fiss. P r o d .

1650

ENDF/B-DOsimet ry

139

EHDF/B-Dosimetry GroupF r e n c h E1JDF
KEDAK
LLLENDLMUSGROVESAND I I
UK

54

1 X

«1 x
1 X
2 x
4 x
2 x
3 x
2 x

1

133
367

2 x
3 x

258
588

4 x
6 x

5408

Data Set = either one Exfor subentry (not counting subentry 001)
or one total or partial DFII, Mat. number, etc. of anevaluated data library.

-68-

DISSEMINATIONSTATISTICS

TABLE II | (continued)
previous year

Documents(total)19574

individual requests

119

Distr. of INDC docs 1
Distr. of other docs J

19465
^

16 946

Appendix E- 69 STATISTICS
TABL3 III
AREA 3
TABLE IIIZAQ

R E Q U E S T

S T A T I S T I C S

1 A p r . 1975 - 31 Mar. 1976
AREA 3A

Element

TOT

All

SIN
DIN

S3L
DEL

UP

NG
SlIG

1TP

N21T
,NA
IID
IIT

Other

RES

III

ALL

HAinr
H

II

1

1

1

1

i

D

1

Li

II
1

Be

1

II
1

i
i

mi

II
Hill

II

1 UK

HUH

i

i

ii
i

[ mi
\\~
"j

i

i

II

B
C

1

IT

<f>

\

IT

i

F

J
1
1
1

i

II

Na

He
i

Al

II
II

P
Cl

Uli

III!

IsiiM " j i i i

II

II
1
1

Ti
V

I

Cr

II

H
1

II

Mn

1

i

Pe

]

Hi

i

Cu

1

!

1
H
i

Zh
Y
i

1"

jii
11 ii unit

II

mm

II
i

H

,11

" '

1
1

1

1

tllililH

II"""-III 1

iiii 1

li

Ca

Co

iyiii
jllll

i

K
Sc

1

-4 1

Ill

Si

jl

1

III

III)

111

jlMlf

lifiiiili

ilium

1

II
III
(

H

fiiuni

1

i1
IHI
III"!

1

mm

n

mm

r

i

i

.

Hill

II

nun

H iiiiiiiiiiii

i

i

1

II
• . ..-U.UI'

III)
i limnHiiiniiiii inn
in
mi

1

•

in.
M

1

-

ZAQ

Element

All

TOT

II

II

A

Zr
Fb

llllliilil

Mo
Rh

Cd

1
1

In

1

Ag

SEL
D3L

SI1T
Dill

IIF

1TG
SITG

1

1

1

1

1

1

1

1

Hill

1T2IT
ITA
ITD
ITS

IIP

1

1

(continued)

R3S

Other

1

1

II

1

III

1

1

1

1

1

'if

\\

h l|

1
i

II

Illlllltll
mm

HII

II
II

II

II

II

II

Dy

III

II

Ho

1

La

-

TABI3 I I I
R E Q U E S T
S T A T I S T I C S

I
Ba

70

Sm

Illl

II

Eu

Hf

li

W

1

liT" III

III

1

Pt

1

Au
Hg
Tl

II

II

i

ilium

~

Pb

i

—

Utltlll|lll
lilt
Ji

mm

IIHIIIHl

wiiiiiiiII
IIIIIIH

"Illl

i

Bi
Th

232

Pa

233

U

233

1

234

1

235

1

236

1

238

HI

Pu

ill

II

1

1

Hi

in

M

III!

F~ I l l l II
In
III II
I

239
240

i

i

241

|

II

242

An

242

Cm

245

Cf

252

L _

—

1
1

iin

II
——~

HIIIIH

IIIIIHII1I
iilHIIH!|

Appendix F- 71 NDS report about past and future meetings on nuclear data
(j.J. Schmidt)
In the general context of nuclear data required for the development of nuclear energy (fission and fusion reactors) the following
meetings were held in the past year or are planned in the near future.
1.

In cooperation with the OECD Nuclear Energy Agency, the IAEA
Nuclear Data Section (NDS) convened an Advisory Group Meeting on
Transactinium Isotope Nuclear Data (TTTD) at Karlsruhe, PRG, from
3-7 November 1975* The meeting achieved a comprehensive surveyof the needs and status of thermal, resonance axid fast neutron
cross sections and nuclear decay parameters or cfie transactinium
isotopes. One of the basic recommendations which resulted fromthe meeting was to initiate internationally coordinated programmes
to measure, calculate and evaluate needed TND which would span thenext ten years. The principal aim of this effort would be to improve the status of TND required for nuclear technology. The proceedings of the meeting will be published as part of the IAEA Technical Report Series.

2.

In cooperation with the International Centre for Theoretical Physics(ICTP) in Trieste, IAEA/NDS convened a Consultants Meeting on the
Use of Nuclear Theory in Neutron Nuclear Data Evaluation at the ICTP
in Trieste, 8-12 December 1975* The meeting reviewed the status anduse of nuclear theories, models and computer codes in the computationand evaluation of neutron data needed for fission and fusion reactor
design, with particular consideration of the requirements of developing countries. The scope of the meeting covered neutron resonanceand statistical theory, capture mechanism, nuclear level densities,
optical model, pre-compound decay and fission theory. The meeting recommended an extented seminar on nuclear theory and nuclear model computer codes for applications. This seminar will be held in 1977» probably at ICTP Trieste (nuclear theory part) and at the Centro di Calcolo in Bologna (computer codes part). The proceedings of the Consultants Meeting will be published as part of the IAEA Technical Report Series.

3.

In the pursuit of its programme to improve the reliability of nuclear
data needed for reactor neutron dosimetry IAEA/NDS will convene a Consultants Meeting on Integral Cross Section Measurements in Standard
Neutron Fields for Reactor Dosimetry in Vienna from 15-19 November 1976•
The meeting forms part of a coordinated programme to improve reactor
dosimetry neutron data by using integral result* from benchmarks. Its
goal is to identify and eliminate existing discrepancies between diffe-rential and integral data "by testing differential data in integral
measurements using carefully selected standard neutron fields over
all energy ranges important to rpactor dosimetryf and to arrive
eventually at an internationally recommended set of neutron crosssections for reactor dosimetry.
4.

Following the October 75 IAEA/NEA Meeting on Sensitivity Studies
and Calculational Methods for Shielding in Paris, the IAEA Nuclear
Power and Reactor Division, in cooperation with IAEA/NDS and OSCD
NEA, will hold a Technical Committee Meeting on Differential andIntegral Nuclear Data Requirements for Shielding in Vienna, from
12-15 October 1976. The main purposes of the meeting will be toidentify the nuclear data requirements for shielding on the basisof detailed sensitivity studies and to review the status of experimental and evaluated data needed for shielding.

5.

A second Advisory Group Meeting on Fission Product Nuclear Data
(FPND) is planned to be held by IAEA/NDS at RON Petten, Netherlands,
from 5-9 September 1977 (tentative date). The programme is currently being worked out in correspondence with the community of FPND
users and producers. The main objective of the meeting will be toreview the progress in FPND research and reliability since the FPND
panel held in Bologna in November 1973. NDS has started a reportseries on progress in FPND which is being issued in regular intervals. The first issue of this series, INDC(NDS)-7O, was publishedin November 1975*

6.

IAEA/NDS will co-sponsor an International Specialists Symposium on
Neutron Standards and their Application which the National Bureauof Standards intends to convene in Washington D.C. in March 1977.
This meeting will review the status and progress in the knowledge ofneutron data used for neutron cross section and neutron flux measurements.

- 73 Appendix G

Views of NNCSC on the

Adoption of

New Keywords for Neutron EXF0R

Use of keyword REACTI0N in Neutron EXF0R
1.)

Light Nuclei Reactions

Current EXF0R rules limit the number of outgoingparticles (except neutrons) to two.

For some light-nuclei reactions it

is important to specify exactly which reaction is being measured. For
example, Li (n,2n)Li , and Li (n,2nd)o which now are artificiallydifferentiated.
2.)

Any reaction for which more than 2 outgoing particles are measured cannot
be specified in neutron EXF0R.

3.)

Cross sections measured on an elemental target leading to production of a
specific isotope could be specified using the REACTI0N coding.

Presently

in neutron EXF0R the information may only be coded by using the keyword
RESID-NUC.
Ex:
4.)

Z-S-0(N,X)Z'-S'-A'

For fission yields measured relative to the yield for a given nucleus,
the standard could be easily specified.
Ex: M0NIT0R (92-U-235(N,F)FF,CUM,YLD,M099,EXP)

5.)

We have come across a problem in specifying In EXF0R isomeric crosssections leading to the ground state of the residual nucleus.

The problem

of differentiating measurements which include the decay from the metastablestate from those which do not has been taken care of in charged-particle
EXF0R by introducing the branch codes Mf,M-,(M).
Use of keyword DECAY-DATA in neutron EXF0R
Adopting the Charged-Particle EXF0R keyword DECAY-DATA would allow for thecoding of all decay data in machine retrievable form which is expecially important
for activation experiments.
impossible.

In the present neutron EXF0R this is either unwieldy

The data do not really belong in a data table as they are not variablesin the experiment and would most usefully be entered into the bibliography.
Use of keyword ADD-RES in neutron EXF0R
We think the addition of a keyword for additional results would be very
useful, especially for the case of data which we may wish to compile at some future

- 74 -

date.

This saves having to store this information in auxiliary systems and it may

be of some use to users.
We recommend that the neutron EXF0R adopt the new CPND keywords effective
as of the next Four-Centres Meeting.

We further recommend that NDS prepare, anddistribute, new dictionaries in six months for comment.