Jag Tuli Vienna Nov 10-11, 2008 ENSDF Evaluation Effort: US Perspective Jagdish Tuli* National Nuclear Data Center Brookhaven National Laboratory * Brookhaven Science Associates

Jag Tuli Vienna Nov 10-11, 2008 Major database is ENSDF Regular US Nuclear Data Program budget briefings are held at DOE Headquarters in February/March. Sole source of funding: US/DOE Office of Science. DOE shares concerns expressed by the representatives of the USNDP about non-US contributions to ENSDF, particularly about steadily decreasing (or almost non-existent) European effort Many of us have brought up the issue at many European forums Clearly Europe is a big user and producer of nuclear data but not a big contributor to the evaluation effort International contributions to ENSDF

Jag Tuli Vienna Nov 10-11, 2008 NNDC Databases

Jag Tuli Vienna Nov 10-11, 2008 Structure and Decay Data Evaluation for ENSDF An international effort is needed to sustain this vital resource, used worldwide. An increasingly large fraction of evaluation effort now comes from US and Canada.

Jag Tuli Vienna Nov 10-11, 2008 Usage US+Canada: 44% Europe: 24% Japan: 6 % China: 4 % Former: USSR 3 % India: 2% StructSure and Decay Data Evaluation for ENSDF Usage of data geographically (source: US National Nuclear Data Center, 2007) There is dramatic disparity between contribution to and usage of final product Contribution ( average) US+Canada: ~78% Europe: ~9% Japan: ~5%

Jag Tuli Vienna Nov 10-11, 2008 NDS e-Subscriptions User accountsUser accounts 4705 User accountsUser accounts 4705

Jag Tuli Vienna Nov 10-11, 2008 NDS Downloads

Jag Tuli Vienna Nov 10-11, 2008 Structure and Decay Data Evaluation for ENSDF European Effort (1986 to present): Dramatic erosion of prior European support: Out of the 6 European structure data centers in 1986, none is currently financially supported. Europe is a ~30% user of end product but its contribution is disproportionately low (two remaining structure evaluators are retirees and have no financial support). European Structure Evaluation Centers Last published evaluation Current financial support? France2006No Belgium2005No Netherlands1998No Sweden1992No Germany1991No UK1986No

Jag Tuli Vienna Nov 10-11, 2008 Numbers of participating Laboratories/Institutes in ENSDF evaluations Year N. America6666 Europe6542 → 1 (0) Russia2221 Japan1111 China--12 Rest of World (13)

Jag Tuli Vienna Nov 10-11, 2008 International Nuclear Structure and Decay Data Evaluators’ Network: responsible centres International Network Connections CentreFTE CentreFTE CNDC, Beijing, China0.25 NNDC, USA2.1 Jilin, China0.25 ORNL, USA0.25 B-le-Chãtel, France0.20 LBNL, USA1.70 JAEA, Japan0.45 TUNL, USA0.60 Kuwait0.2 ANL, USA0.55 PNPI, Russia0.25 McMaster, Canada1.5 ANU, Australia IIT, India TOTAL8.7

Jag Tuli Vienna Nov 10-11, 2008 Some Famous Evaluators J. Livingston & G. Seaborg (LBL) - Table of Isotopes E. Segre (LBL) – Chart of Nuclides G. Friedlander (BNL) & M. Perlman (LBL) – GE Wall Chart K. Way (ORNL) – Nuclear Data Sheets M. Lederer (LBL) – Table of Isotopes T. Lauritsen (UCLA) & F. Ajzenberg-Selove (UP) – A=1-20 D. Dzhelepov & L. Peker (Russia) – Table of Isotopes P. Endt & C. Van der Leune (Utrecht) – A=21-44 S. Raman, F. Bertrand, M. Martin (ORNL) – Nuclear Data Sheets

Jag Tuli Vienna Nov 10-11, 2008 Some European Evaluation Groups Belgium (Ghent): D. De Frenne (Retired) France (Grenoble): J. Blachot (Retired) Germany (Karlsruhe): H. Behrens Netherlands (Utrecht): P. Endt, C. Van der Leune Sweden (Lund): P. Ekstrom U.K. (Liverpool): P. Twin, P. Forsyth

Jag Tuli Vienna Nov 10-11, 2008 Conclusion Strong international effort is needed to sustain this vital resource, used worldwide. European community is a major user of NSDD databases. Their contribution to keep them updated will be greatly appreciated. Some European groups seem interested in this activity. These groups should be supported.

Jag Tuli Vienna Nov 10-11, 2008 Conclusion Thanks for allowing me this opportunity to bring our concerns to your attention.