NATIONAL NUCLEAR DATA CENTER
Bldg. 197DBrookhaven National Laboratory
P. O. Box 5000
Upton, NY 11973-5000, U.S.A.
Telephone: (516)344-5096
FAX: (516)344-2806

Memo CP-C/379
DATE:
TO:
FROM:
SUBJECT:

September 21, 2006
Distribution
P. Oblozinsky, D. Rochman
NNDC Progress Report (October 2004 – September 2006)

NNDC Staff
Since the last full NRDC meeting in October 2004, the following personnel changes
took place at the NNDC:• Vicki McLane retired in December 2004, she was replaced by Dimitri Rochman(formerly at LANL), who joined the NNDC in November 2004.
• Charlie Dunford retired in June 2005. His position was not filled-in due tobudgetary constraints.
The NNDC has 12.6 FTE staff (full-time equivalent). This includes 9 PhD physicists,
1 computer professional, 2 support staff, and 1 secretary (0.6 FTE).
EXFOR Compilations
Our nuclear reaction compilation was done regularly and we kept adding experimental
data to the EXFOR (CSISRS) library continuously. The last TRANS file for neutroninduced reaction was #1340 and the last TRANS file for charge-particle induced
reaction was C077. Gamma-induced reactions were also compiled with two TRANSfiles (L009).
Over the period of October 2004 – September 2006, we added a total of 543 newentries to EXFOR, including• 180 neutron-induced reactions,• 337 reactions induced by light charged-particles, and• 26 photonuclear reactions.
Development of the ENDF/B-VII.0 Library
The NNDC continued to be heavily involved in the development of the new ENDF/BVII.0 library. This includes active contribution to neutron cross-section evaluations
primarily in the fission product mass range (70 new evaluations), entirely newevaluations for the decay data library (3,830 nuclides), database management and webservice.

1The schedule for testing and release of ENDF/B-VII.0 is as follows:• April 2006
Beta2 testing version released• June 2006
CSEWG validation meeting at BNL• September 2006 Beta 3 testing version released• November 2006 CSEWG annual meeting at BNL• December 2006 ENDF/B-VII.0 library officially released

Fig.1. The NNDC webpage, with direct access to 14 sublibraries of ENDF/B-VII.0

Web Service and Communication with Users
The number of data retrievals from the NNDC web service continued to grow rapidly.
Since April 2004, when we launched the new relational database management system
coupled to new hardware and new web service, our retrieval statistics almost tripled.
We are expecting to reach 1 million retrievals per year in 2006.
Although the demand for nuclear reaction services is relatively small compared tonuclear structure services, combined EXFOR and ENDF retrievals grew in the lastyear by about 40% compared to the previous year. Demand for CINDA continues tobe marginal and represents less than 0.5% of all data retrievals.
We are devoting our time both to neutron and charge-particle reaction compilation
activities, with priorities driven by the users’ needs. Our contact with users ismaintained primarily by the open EXFOR contact area on the NNDC website,www.nndc.bnl.gov/exfor.

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In early 2005, we created the “Recent Comments on CSISRS/EXFOR” webpage,www.nndc.bnl.gov/exfor3/compilations/web_emails.html. Since then, users frommany countries, mostly from Europe and northern America, have sent their commentsand suggestions to the NNDC. A total of 66 e-mail exchanges were presented on thisweb page, but some more exchanges were realized and not made publicly available. In
general, we respond to users within 1 day after receiving a question or comment.
A special effort was devoted to the analysis of the EXFOR retrieval system. Based on
this analysis, our website was redesigned in February 2006, with positive impact onretrieval statistics.

Fig.2. Data retrievals statistics for the NNDC web service. The year 2006 represents
projection based on the actual 9 months value.
Distribution
vml@bnl.gov
drochman@bnl.gov
manokhin@ippe.obninsk.ru
maev@ippe.obninsk.ru
may@obninsk.ru
Mmarina@ippe.obninsk.rug
blokhin@ippe.obninsk.ru
feliks@polyn.kiae.su
chukreev@polyn.kiae.su
S.Dunaeva@iaea.org
taova@expd.vniief.ru
varlamov@depni.sinp.msu.ru
kato@nucl.sci.hokudai.ac.jp
ohnishi@nucl.sci.hokudai.ac.jp

gezg@iris.ciae.ac.cn
hongwei@iris.ciae.ac.cn
tarkanyi@atomki.hu
stakacs@atomki.hu
vlasov@kinr.kiev.ua
ogritzay@kinr.kiev.ua
ohtsuka@nucl.sci.hokudai.ac.jp
m.wirtz@iaea.org
m.lammer@iaea.org
v.pronyaev@iaea.org
v.zerkin@iaea.org
henriksson@nea.fr
exfor@nea.fr
schwerer@iaea.or.at3

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