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

Abstract

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.

Authors:
 [1];  [1];  [2];  [1];  [3];  [3];  [4];  [5];  [1];  [6];  [7];  [1];  [8];  [4];  [3];  [6];  [3];  [1];  [9];  [10] more »;  [11];  [12];  [1];  [4];  [13];  [9];  [3];  [8];  [8] « less
  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)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1338522
DOE Contract Number:
AC05-00OR22725
Resource Type:
Conference
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

Citation Formats

Ratkiewicz, A., Cizewski, J. A., Pain, S., Adekola, A. S., Burke, J. T., Casperson, R.J., Fotiades, N., McCleskey, M., Burcher, S., Shand, C. M., Austin, R. A. E., Baugher, T., Carpenter, M. P., Devlin, M., Escher, J. E., Hardy, S., Hatarik, R., Howard, M., Hughes, R., Jones, K. L., Kozub, R. L., Lister, C. J., Manning, B., O'Donnell, J. M., Peters, W. A., Ross, T.J., Scielzo, N.D., Seweryniak, D., and Zhu, S. Validating (d,p gamma) as a Surrogate for Neutron Capture. United States: N. p., 2015. Web.
Ratkiewicz, A., Cizewski, J. A., Pain, S., Adekola, A. S., Burke, J. T., Casperson, R.J., Fotiades, N., McCleskey, M., Burcher, S., Shand, C. M., Austin, R. A. E., Baugher, T., Carpenter, M. P., Devlin, M., Escher, J. E., Hardy, S., Hatarik, R., Howard, M., Hughes, R., Jones, K. L., Kozub, R. L., Lister, C. J., Manning, B., O'Donnell, J. M., Peters, W. A., Ross, T.J., Scielzo, N.D., Seweryniak, D., & Zhu, S. Validating (d,p gamma) as a Surrogate for Neutron Capture. United States.
Ratkiewicz, A., Cizewski, J. A., Pain, S., Adekola, A. S., Burke, J. T., Casperson, R.J., Fotiades, N., McCleskey, M., Burcher, S., Shand, C. M., Austin, R. A. E., Baugher, T., Carpenter, M. P., Devlin, M., Escher, J. E., Hardy, S., Hatarik, R., Howard, M., Hughes, R., Jones, K. L., Kozub, R. L., Lister, C. J., Manning, B., O'Donnell, J. M., Peters, W. A., Ross, T.J., Scielzo, N.D., Seweryniak, D., and Zhu, S. Thu . "Validating (d,p gamma) as a Surrogate for Neutron Capture". United States. doi:. https://www.osti.gov/servlets/purl/1338522.
@article{osti_1338522,
title = {Validating (d,p gamma) as a Surrogate for Neutron Capture},
author = {Ratkiewicz, A. and Cizewski, J. A. and Pain, S. and Adekola, A. S. and Burke, J. T. and Casperson, R.J. and Fotiades, N. and McCleskey, M. and Burcher, S. and Shand, C. M. and Austin, R. A. E. and Baugher, T. and Carpenter, M. P. and Devlin, M. and Escher, J. E. and Hardy, S. and Hatarik, R. and Howard, M. and Hughes, R. and Jones, K. L. and Kozub, R. L. and Lister, C. J. and Manning, B. and O'Donnell, J. M. and Peters, W. A. and Ross, T.J. and Scielzo, N.D. and Seweryniak, D. and Zhu, S.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

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