Pavel Oblozinsky NSDD’07, St. Petersburg June 11-15, 2007 Report on the US Nuclear Data Program...

Pavel Oblozinsky NSDD’07, St. Petersburg June 11-15, 2007

Report on the US Nuclear Data Program

Pavel OblozinskyNational Nuclear Data Center

Brookhaven National Laboratory

[email protected]

Brookhaven Science Associates

2Pavel Oblozinsky NSDD’07, St. Petersburg June 11-15, 2007

Mission Provide nuclear physics data for basic nuclear research and nuclear technology in the United States

Sponsor U.S. Department of Energy - Office of Science, Office

of Nuclear Physics

Webwww.nndc.bnl.gov/usndp


Membership• National labs (ANL, BNL, LBNL, LANL, LLNL, ORNL)• Universities (TUNL, NIST, McMaster)• Total manpower ~ 23.5 FTE


USNDP Organization

USNDP Chair: P. Oblozinsky, BNL

Standing Working Groups• Reaction data, chair T. Kawano, LANL• Structure and decay data, chair C. Baglin, LBNL

Task Forces• Nuclear data for astrophysics, chair M. Smith, ORNL• Nuclear data for homeland security, chair D. McNabb, LLNL


Major activities• Archival of databases & data dissemination 25%• Nuclear structure and decay data 40%• Nuclear reaction data 20%• Coordination & support 15%

Major products• ENSDF database

• Evaluated nuclear structure & decay data • Produced together with the NSDD network

• ENDF database • Evaluated nuclear reaction data• Produced together with the Cross Section Evaluation Working Group


Nuclear structure data activities• ENSDF, NSR, XUNDL, NuDat, Nuclear Data Sheets,

Nuclear Wallet Cards, …• Sponsored solely by USNDP (DOE Office of Science)• Users are primarily from basic nuclear science

Nuclear reaction data activities• ENDF, CINDA, CSISRS, …• Sponsored partly by USNDP (DOE Office of Science)• Other sponsors contribute via CSWEG• Considerable leverage to USNDP ~ factor of 10 • Users are primarily from applied nuclear technology


Issue: ENSDF manpower (age of U.S. evaluators)

Positive change since 2005, new part time evaluators:- N. Nica, BNL/TA&M- Postdoc in ANL- Postdoc in TUNL- Postdoc expected in McMaster

Status 2005


• USNDP Users Forum intends to strengthen dialog with the user community, get feedback and new ideas; introduced in 2005

• Format: 4 prominent scientists invited to USNDP annual meeting for a half-day session consisting of their talks and discussions

• 2005, organized by D. Winchell I.Y. Lee, LBNLM. Carpenter, ANL P. Cottle, Florida State UniversityJ. Millener, BNL

• 2006, organized by A. SonzogniC. Baktash, ORNL B. Tsang, Michigan State UniversityA. Mengoni, IAEA, Austria & CERN (n-ToF measurement of neutron cross sections)G. de France, GANIL, France

• 2007, organized by A. Sonzogni G. Bertsch, Institute of Nuclear Theory, University of Washington 3 other speakers, including 1-2 from Europe, to be determined

Users Forum


Nuclear Data Sheets

• Nuclear Data Sheets continues to be important vehicle for publishing ENSDF evaluations (~ 2,500 - 3,000 pages per year)

• Small part is available for non-ENSDF papers • 2005: Recent References discontinued, available on NSR webpage • 2006: Special issue on ENDF/B-VII.0 library published in December, use of ENSDF in ENDF is very important!, may become the most cited NDS issue ever• 2007: Several papers related to ENDF/B-VII.0 considered for December issue (uranium evaluations by LANL, evaluation reaction model code EMPIRE by BNL et al., …)

• NDS modernization is underway (discussed by J. Tuli and B. Singh)


Bad news• USNDP feels increasingly uncomfortable with the

weak international (European) contribution to ENSDF evaluations, but there is no much it can do about this

Good news• DOE Office of Science remains committed to ENSDF

In conclusion I can offer bad news and good news

Pavel Oblozinsky NSDD’07, St. Petersburg June 11-15, 2007 Report on the US Nuclear Data Program...

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