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Title: Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Abstract

Numerous scientific fields including astrophysics, nuclear power, and nuclear forensics require a knowledge of basic nuclear properties for large numbers of short-lived, radioactive isotopes far removed from stable nuclei. Neutron-capture cross sections are one such piece of nuclear data where direct measurements are not possible and theoretical predictions can vary by orders of magnitude. A recently developed indirect technique for inferring neutron capture rates, the β-Oslo method, has been introduced but not compared against a known, directly measured neutron capture cross section. To provide this benchmark, two indirect methods based on β decay and charged-particle reactions were used to extract the nuclear level density and γ-ray strength function of 51Ti. The nuclear level density and γ-ray strength function from the two data sets were found to be equivalent and were used to extract the neutron capture cross section of 50Ti which agrees with previous direct measurements at high neutron energies. Here, the results demonstrate the validity of the β-Oslo method for extracting neutron capture cross sections of short-lived nuclei and provide a sufficiently small uncertainty to be used in various applications.

Authors:
 [1];  [2];  [2];  [1];  [1];  [1];  [2];  [2];  [3];  [2];  [4];  [1];  [5];  [2];  [2];  [2];  [2];  [6];  [1];  [4] more »;  [7];  [1];  [1];  [2];  [2];  [2];  [2];  [2];  [8];  [2] « less
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Univ. of Oslo, Oslo (Norway)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Univ. of Oslo, Oslo (Norway); Helmholtz Inst. Mainz, Mainz (Germany); GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)
  6. iThemba LABS (South Africa); Univ. of Oslo, Oslo (Norway)
  7. Central Michigan Univ., Mount Pleasant, MI (United States); Michigan State Univ., East Lansing, MI (United States)
  8. iThemba LABS (South Africa)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1561454
Alternate Identifier(s):
OSTI ID: 1558834
Report Number(s):
LLNL-JRNL-760247
Journal ID: ISSN 2469-9985; PRVCAN; 947179
Grant/Contract Number:  
AC52-07NA27344; SC0013039; NA0000979; NA0003180; NA0003221; FC03-03NA00143
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Liddick, S. N., Larsen, A. C., Guttormsen, M., Spyrou, A., Crider, B. P., Naqvi, F., Midtbø, J. E., Bello Garrote, F. L., Bleuel, D. L., Crespo Campo, L., Couture, A., Dombos, A. C., Giacoppo, F., Görgen, A., Hadynska-Klek, K., Hagen, T. W., Ingeberg, V. W., Kheswa, B. V., Lewis, R., Mosby, S., Perdikakis, G., Prokop, C. J., Quinn, S. J., Renstrøm, T., Rose, S. J., Sahin, E., Siem, S., Tveten, G. M., Wiedeking, M., and Zeiser, F. Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β-Oslo method. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.024624.
Liddick, S. N., Larsen, A. C., Guttormsen, M., Spyrou, A., Crider, B. P., Naqvi, F., Midtbø, J. E., Bello Garrote, F. L., Bleuel, D. L., Crespo Campo, L., Couture, A., Dombos, A. C., Giacoppo, F., Görgen, A., Hadynska-Klek, K., Hagen, T. W., Ingeberg, V. W., Kheswa, B. V., Lewis, R., Mosby, S., Perdikakis, G., Prokop, C. J., Quinn, S. J., Renstrøm, T., Rose, S. J., Sahin, E., Siem, S., Tveten, G. M., Wiedeking, M., & Zeiser, F. Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β-Oslo method. United States. doi:10.1103/PhysRevC.100.024624.
Liddick, S. N., Larsen, A. C., Guttormsen, M., Spyrou, A., Crider, B. P., Naqvi, F., Midtbø, J. E., Bello Garrote, F. L., Bleuel, D. L., Crespo Campo, L., Couture, A., Dombos, A. C., Giacoppo, F., Görgen, A., Hadynska-Klek, K., Hagen, T. W., Ingeberg, V. W., Kheswa, B. V., Lewis, R., Mosby, S., Perdikakis, G., Prokop, C. J., Quinn, S. J., Renstrøm, T., Rose, S. J., Sahin, E., Siem, S., Tveten, G. M., Wiedeking, M., and Zeiser, F. Mon . "Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β-Oslo method". United States. doi:10.1103/PhysRevC.100.024624.
@article{osti_1561454,
title = {Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β-Oslo method},
author = {Liddick, S. N. and Larsen, A. C. and Guttormsen, M. and Spyrou, A. and Crider, B. P. and Naqvi, F. and Midtbø, J. E. and Bello Garrote, F. L. and Bleuel, D. L. and Crespo Campo, L. and Couture, A. and Dombos, A. C. and Giacoppo, F. and Görgen, A. and Hadynska-Klek, K. and Hagen, T. W. and Ingeberg, V. W. and Kheswa, B. V. and Lewis, R. and Mosby, S. and Perdikakis, G. and Prokop, C. J. and Quinn, S. J. and Renstrøm, T. and Rose, S. J. and Sahin, E. and Siem, S. and Tveten, G. M. and Wiedeking, M. and Zeiser, F.},
abstractNote = {Numerous scientific fields including astrophysics, nuclear power, and nuclear forensics require a knowledge of basic nuclear properties for large numbers of short-lived, radioactive isotopes far removed from stable nuclei. Neutron-capture cross sections are one such piece of nuclear data where direct measurements are not possible and theoretical predictions can vary by orders of magnitude. A recently developed indirect technique for inferring neutron capture rates, the β-Oslo method, has been introduced but not compared against a known, directly measured neutron capture cross section. To provide this benchmark, two indirect methods based on β decay and charged-particle reactions were used to extract the nuclear level density and γ-ray strength function of 51Ti. The nuclear level density and γ-ray strength function from the two data sets were found to be equivalent and were used to extract the neutron capture cross section of 50Ti which agrees with previous direct measurements at high neutron energies. Here, the results demonstrate the validity of the β-Oslo method for extracting neutron capture cross sections of short-lived nuclei and provide a sufficiently small uncertainty to be used in various applications.},
doi = {10.1103/PhysRevC.100.024624},
journal = {Physical Review C},
number = 2,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

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