Validating (d,p gamma) as a Surrogate for Neutron Capture

Conference · Thu Jan 01 00:00:00 EST 2015

OSTI ID:1338522

Ratkiewicz, A. ^[1]; Cizewski, J. A. ^[1]; Pain, S. ^[2]; Adekola, A. S. ^[1]; Burke, J. T. ^[3]; Casperson, R. J. ^[3]; Fotiades, N. ^[4]; McCleskey, M. ^[5]; Burcher, S. ^[1]; Shand, C. M. ^[6]; Austin, R. A. E. ^[7]; Baugher, T. ^[1]; Carpenter, M. P. ^[8]; Devlin, M. ^[4]; Escher, J. E. ^[3]; Hardy, S. ^[6]; Hatarik, R. ^[3]; Howard, M. ^[1]; Hughes, R. ^[9]; Jones, K. L. ^[10] ; Kozub, R. L. ^[11]; Lister, C. J. ^[12]; Manning, B. ^[1]; O'Donnell, J. M. ^[4]; Peters, W. A. ^[13]; Ross, T. J. ^[9]; Scielzo, N. D. ^[3]; Seweryniak, D. ^[8]; Zhu, S. ^[8]

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1. Rutgers University
2. Oak Ridge National Laboratory (ORNL)
3. Lawrence Livermore National Laboratory (LLNL)
4. Los Alamos National Laboratory (LANL)
5. Texas A&M University
6. Rutgers Univ./Univ. of Surrey, UK
7. Saint Mary’s University, Halifa, Canada
8. Argonne National Laboratory (ANL)
9. University of Richmond, VA
10. University of Tennessee, Knoxville (UTK)
11. Tennessee Technological University (TTU)
12. University of Massachusetts, Lowell
13. Oak Ridge Associated Universities (ORAU)

The r-process is responsible for creating roughly half of the elements heavier than iron. It has recently become understood that the rates at which neutron capture reactions proceed at late times in the rprocess may dramatically affect the final abundance pattern. However, direct measurements of neutron capture reaction rates on exotic nuclei are exceptionally difficult, necessitating the development of indirect approaches such as the surrogate technique. The (d,py) reaction at low energies was identified as a promising surrogate for the (n,y) reaction, as both reactions share many characteristics. We report on a program to validate (d,py) as a surrogate for (n,y) using 95Mo as a target. The experimental campaign includes direct measurements of the y-ray intensities from the decay of excited states populated in the 95Mo(n,y) and 95Mo(d,py) reactions.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1338522
• Resource Relation: Conference: 15th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS15), Dresden, Germany, 20140825, 20140829
• Country of Publication: United States
• Language: English