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Title: Towards Neutron Capture on Exotic Nuclei: Demonstrating ( d , p γ ) as a Surrogate Reaction for ( n , γ )

Abstract

The neutron-capture reaction plays a critical role in the synthesis of the elements in stars and is important for societal applications including nuclear power generation and stockpile-stewardship science. However, it is difficult—if not impossible—to directly measure neutron capture cross sections for the exotic, short-lived nuclei that participate in these processes. We demonstrate a new technique which can be used to indirectly determine neutron-capture cross sections for exotic systems. This technique makes use of the $(d,p)$ transfer reaction, which has long been used as a tool to study the structure of nuclei. Recent advances in reaction theory, together with data collected using this reaction, enable the determination of neutron-capture cross sections for short-lived nuclei. A benchmark study of the $$^{95}\mathrm{Mo}(d,p)$$ reaction is presented, which illustrates the approach and provides guidance for future applications of the method with short-lived isotopes produced at rare isotope accelerators.

Authors:
 [1];  [2];  [3];  [4];  [3];  [3];  [5];  [6];  [2];  [7];  [2];  [8];  [9];  [2];  [10];  [3];  [11];  [12]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy
  2. Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Michigan State Univ., East Lansing, MI (United States); Facility for Rare Isotope Beams, East Lansing, MI (United States)
  5. Texas A & M Univ., College Station, TX (United States). Cyclotron Inst.
  6. Saint Mary’s Univ., Halifax, NS (Canada). Astronomy and Physics Dept.
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Richmond, VA (United States). Dept. of Physics
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  9. Oak Ridge Associated Univ., Oak Ridge, TN (United States)
  10. Univ. of Richmond, VA (United States). Dept. of Physics
  11. Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy; Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
  12. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1512636
Alternate Identifier(s):
OSTI ID: 1493860
Report Number(s):
LLNL-JRNL-751443
Journal ID: ISSN 0031-9007; 937205
Grant/Contract Number:  
AC52-07NA27344; FG52-09NA29467; NA0000979; FG02-93ER40773
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 5; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; nuclear astrophysics; nuclear reactions; transfer reactions; r process

Citation Formats

Ratkiewicz, A., Cizewski, J. A., Escher, J. E., Potel, G., Burke, J. T., Casperson, R. J., McCleskey, M., Austin, R. A. E., Burcher, S., Hughes, R. O., Manning, B., Pain, S. D., Peters, W. A., Rice, S., Ross, T. J., Scielzo, N. D., Shand, C., and Smith, K. Towards Neutron Capture on Exotic Nuclei: Demonstrating (d,pγ) as a Surrogate Reaction for (n,γ). United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.052502.
Ratkiewicz, A., Cizewski, J. A., Escher, J. E., Potel, G., Burke, J. T., Casperson, R. J., McCleskey, M., Austin, R. A. E., Burcher, S., Hughes, R. O., Manning, B., Pain, S. D., Peters, W. A., Rice, S., Ross, T. J., Scielzo, N. D., Shand, C., & Smith, K. Towards Neutron Capture on Exotic Nuclei: Demonstrating (d,pγ) as a Surrogate Reaction for (n,γ). United States. doi:10.1103/PhysRevLett.122.052502.
Ratkiewicz, A., Cizewski, J. A., Escher, J. E., Potel, G., Burke, J. T., Casperson, R. J., McCleskey, M., Austin, R. A. E., Burcher, S., Hughes, R. O., Manning, B., Pain, S. D., Peters, W. A., Rice, S., Ross, T. J., Scielzo, N. D., Shand, C., and Smith, K. Thu . "Towards Neutron Capture on Exotic Nuclei: Demonstrating (d,pγ) as a Surrogate Reaction for (n,γ)". United States. doi:10.1103/PhysRevLett.122.052502.
@article{osti_1512636,
title = {Towards Neutron Capture on Exotic Nuclei: Demonstrating (d,pγ) as a Surrogate Reaction for (n,γ)},
author = {Ratkiewicz, A. and Cizewski, J. A. and Escher, J. E. and Potel, G. and Burke, J. T. and Casperson, R. J. and McCleskey, M. and Austin, R. A. E. and Burcher, S. and Hughes, R. O. and Manning, B. and Pain, S. D. and Peters, W. A. and Rice, S. and Ross, T. J. and Scielzo, N. D. and Shand, C. and Smith, K.},
abstractNote = {The neutron-capture reaction plays a critical role in the synthesis of the elements in stars and is important for societal applications including nuclear power generation and stockpile-stewardship science. However, it is difficult—if not impossible—to directly measure neutron capture cross sections for the exotic, short-lived nuclei that participate in these processes. We demonstrate a new technique which can be used to indirectly determine neutron-capture cross sections for exotic systems. This technique makes use of the $(d,p)$ transfer reaction, which has long been used as a tool to study the structure of nuclei. Recent advances in reaction theory, together with data collected using this reaction, enable the determination of neutron-capture cross sections for short-lived nuclei. A benchmark study of the $^{95}\mathrm{Mo}(d,p)$ reaction is presented, which illustrates the approach and provides guidance for future applications of the method with short-lived isotopes produced at rare isotope accelerators.},
doi = {10.1103/PhysRevLett.122.052502},
journal = {Physical Review Letters},
number = 5,
volume = 122,
place = {United States},
year = {2019},
month = {2}
}

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