jag tuli vienna nov 10-11, 2008 ensdf evaluation effort: us perspective jagdish tuli* national...
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Jag TuliVienna Nov 10-11, 2008
ENSDF Evaluation Effort:US Perspective
Jagdish Tuli*National Nuclear Data Center
Brookhaven National Laboratory
*Email: [email protected]
Brookhaven Science Associates
Jag TuliVienna 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 TuliVienna Nov 10-11, 2008
NNDC Databases
Jag TuliVienna 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.
0
50
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400
Year
Pub
lishe
d N
uclid
e E
valu
atio
ns
OthersEuropeUS+Canada
US+Canada
2002-61997-011992-61987-911982-60
10
2030
40
50
60
7080
90
100
Time Period
% C
ontr
ibut
ion
EuropeOthers
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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 (2002-2006 average)
US+Canada: ~78%
Europe: ~9%
Japan: ~5%
Jag TuliVienna Nov 10-11, 2008
NDS e-Subscriptions
25%
27%
36%
5%
7%
Asia
USA/Canada
Western Europe
Eastern Europe
Rest of World
25%
27%
36%
5%
7%
Asia
USA/Canada
Western Europe
Eastern Europe
Rest of World
User accounts 4705User accounts 4705
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NDS Downloads
Africa2%
Americas25%
Asia33%
Europe39%
Oceania1%
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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?
France 2006 No
Belgium 2005 No
Netherlands 1998 No
Sweden 1992 No
Germany 1991 No
UK 1986 No
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Numbers of participating Laboratories/Institutes in ENSDF evaluations
Year1981 1986 1996 2007
N. America 6 6 6 6
Europe 6 5 4 2 → 1 (0)
Russia 2 2 2 1
Japan 1 1 1 1
China - - 1 2
Rest of World 1 1 1 3
16 15 15 14 (13)
Jag TuliVienna 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 TuliVienna Nov 10-11, 2008
Conclusion
Thanks for allowing me this opportunity
to bring our concerns to your attention.