US Nuclear Data Program Evaluation Activities
"Explore the contributions of the US Nuclear Data Program in evaluating nuclear structure data and energy levels of light nuclei. Learn about ongoing evaluation activities, recent progress, and compilation efforts to enhance the Nuclear Data Evaluation Project."
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
TUNL Contributions in the US Nuclear Data Program Nuclear Structure Data Evaluation Program J.H. Kelley - USNDP Structure Group Leader: (6 months FTE), J. Purcell (emeritus 0.1 FTE), and G. Sheu (Adm. Assist. 0.75 FTE) (Kent Leung (post doc 0.5 FTE)) We are responsible for nuclear structure evaluation in the A=2-20 mass region Energy Levels of Light Nuclei reviews published in Nuclear Physics A ENSDF files for A=2-20 XUNDL from A=2-20 Web interface for A=3-20 Information This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics.
Evaluation Activities Energy Levels of Light Nuclei Follow style of Fay Ajzenberg-Selove Broad scope of reactions is included discussion format. Adopted levels/gammas, Energy Level Diagrams ENSDF More rigorous information required Better documentation of original sources reaction data sets/decay data sets Adopted levels/gammas, decay widths, etc. To Nuclear Data Evaluation Project
Evaluation Activities TUNL assumed responsibility for producing evaluations in the nuclear mass region A=3-20 in 1993 following the retirement of Fay Ajzenberg-Selove, and we continued publications in the Energy Levels of Light Nuclei series. However we have not matched her pace of reviewing about three mass-chains per year at any time. Our average has been evaluation of less than mass-chain per year. With serious reflection that considers both the great value of the breadth of information provided in the Energy Levels of Light Nuclei publications and the NSDD/ENSDF network expected 7-10 year periodicity for reviews of a given nuclear mass-chain, the only feasible direction for our future evaluations is to focus solely on ENSDF reviews to be published in the Nuclear Data Sheets. Following publication of the review of A=12 nuclei, we will produce only the more focused ENSDF format nuclear structure data reviews for the light mass region. To Nuclear Data Evaluation Project
Recent Evaluation Activities Work in progress: A=12 Evaluation for Energy Levels Preparing A=12 ENSDF file Preparing NDS articles on A=2 and A=3 ENSDF datasets for 15,16,18Be,6,7B,14F,15Ne,18-20Mg Updated -n, -chx data sets : 14Be, 14B, 19N, 20N -n: 12Be, 14Be, 14B, 15B, 16C, 17N, 18C, 18N, 19B, 19N, 20C, 20N -p: 9C, 11Be : 9C, 11Be, 14Be, 17N, 18N To Nuclear Data Evaluation Project
Compilation Activities Committed to XUNDL (A=2-20) 138 sets from 116 articles since 2/2013 (5-6/month) Organizational Workshop May 16-17 at TUNL Estimate total network 0.5 FTE (perhaps a low estimate) Contributes to future ENSDF evaluations Requires input from additional network evaluators to survive New commitments from several laboratories To Nuclear Data Evaluation Project
Other Compilation Activities Compilation of ground state decay & -decay references and data Compilation of (p,X) and ( ,X) excitation functions Compilation of thermal neutron capture references and data TUNL Dissertations- http://www.tunl.duke.edu/~gsheu/Theses/TUNL_Theses.shtml To Nuclear Data Evaluation Project
WWW (April 02 present) 2014: =100. k Using Analog - finding issues with excluding new search engine "robots" To Nuclear Data Evaluation Project
Print ready NDS manuscripts Grace Sheu has started helping out with MyENSDF and preparing print-ready ND Sheets. To Nuclear Data Evaluation Project
