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Title: La 137 , 138 , 139 ( n , γ ) cross sections constrained with statistical decay properties of La 138 , 139 , 140 nuclei

Abstract

The nuclear level densities and γ-ray strength functions of 138,139,140La were measured using the 139La( 3He,α), 139La( 3He,' 3He), and 139La(d,p) reactions. The particle-γ coincidences were recorded with the silicon particle telescope (SiRi) and NaI(Tl) (CACTUS) arrays. In the context of these experimental results, the low-energy enhancement in the A~140 region is discussed. The 137,138,139La(n,γ) cross sections were calculated at s- and p-process temperatures using the experimentally measured nuclear level densities and γ-ray strength functions. As a result, good agreement is found between 139La(n,γ) calculated cross sections and previous measurements.

Authors:
 [1];  [2];  [3];  [4];  [5];  [4];  [4];  [6];  [7];  [4];  [8];  [4];  [3];  [4];  [4];  [4];  [9];  [4];  [4];  [10] more »;  [4];  [4];  [4];  [4];  [4] « less
  1. iThemba LABS, Somerset West (South Africa); Univ. of Oslo, Oslo (Norway); Univ. of Stellenbosch, Stellenbosch (South Africa); Univ. of Johannesburg, Johannesburg (South Africa)
  2. iThemba LABS, Somerset West (South Africa)
  3. Univ. of California, Berkeley, CA (United States)
  4. Univ. of Oslo, Oslo (Norway)
  5. Univ. Libre de Bruxelles, Brussels (Belgium)
  6. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  8. Univ. of Oslo, Oslo (Norway); Helmholtz Institute Mainz, Mainz (Germany); GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  9. iThemba LABS, Somerset West (South Africa); Univ. of Stellenbosh, Stellenbosch (South Africa)
  10. Univ. of Stellenbosh, Stellenbosch (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:
1378552
Alternate Identifier(s):
OSTI ID: 1352714; OSTI ID: 1423617
Report Number(s):
LLNL-JRNL-705384
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:  
AC52-07NA27344; AC02-05CH11231; NA0000979; NA0003180
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 4; 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

Kheswa, B. V., Wiedeking, M., Brown, J. A., Larsen, A. C., Goriely, S., Guttormsen, M., Bello Garrote, F. L., Bernstein, L. A., Bleuel, D. L., Eriksen, T. K., Giacoppo, F., Gorgen, A., Goldblum, B. L., Hagen, T. W., Koehler, P. E., Klintefjord, M., Malatji, K. L., Midtbo, J. E., Nyhus, H. T., Papka, P., Renstrom, T., Rose, S. J., Sahin, E., Siem, S., and Tornyi, T. G.. La137,138,139(n,γ) cross sections constrained with statistical decay properties of La138,139,140 nuclei. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.045805.
Kheswa, B. V., Wiedeking, M., Brown, J. A., Larsen, A. C., Goriely, S., Guttormsen, M., Bello Garrote, F. L., Bernstein, L. A., Bleuel, D. L., Eriksen, T. K., Giacoppo, F., Gorgen, A., Goldblum, B. L., Hagen, T. W., Koehler, P. E., Klintefjord, M., Malatji, K. L., Midtbo, J. E., Nyhus, H. T., Papka, P., Renstrom, T., Rose, S. J., Sahin, E., Siem, S., & Tornyi, T. G.. La137,138,139(n,γ) cross sections constrained with statistical decay properties of La138,139,140 nuclei. United States. doi:10.1103/PhysRevC.95.045805.
Kheswa, B. V., Wiedeking, M., Brown, J. A., Larsen, A. C., Goriely, S., Guttormsen, M., Bello Garrote, F. L., Bernstein, L. A., Bleuel, D. L., Eriksen, T. K., Giacoppo, F., Gorgen, A., Goldblum, B. L., Hagen, T. W., Koehler, P. E., Klintefjord, M., Malatji, K. L., Midtbo, J. E., Nyhus, H. T., Papka, P., Renstrom, T., Rose, S. J., Sahin, E., Siem, S., and Tornyi, T. G.. Fri . "La137,138,139(n,γ) cross sections constrained with statistical decay properties of La138,139,140 nuclei". United States. doi:10.1103/PhysRevC.95.045805. https://www.osti.gov/servlets/purl/1378552.
@article{osti_1378552,
title = {La137,138,139(n,γ) cross sections constrained with statistical decay properties of La138,139,140 nuclei},
author = {Kheswa, B. V. and Wiedeking, M. and Brown, J. A. and Larsen, A. C. and Goriely, S. and Guttormsen, M. and Bello Garrote, F. L. and Bernstein, L. A. and Bleuel, D. L. and Eriksen, T. K. and Giacoppo, F. and Gorgen, A. and Goldblum, B. L. and Hagen, T. W. and Koehler, P. E. and Klintefjord, M. and Malatji, K. L. and Midtbo, J. E. and Nyhus, H. T. and Papka, P. and Renstrom, T. and Rose, S. J. and Sahin, E. and Siem, S. and Tornyi, T. G.},
abstractNote = {The nuclear level densities and γ-ray strength functions of 138,139,140La were measured using the 139La(3He,α), 139La(3He,'3He), and 139La(d,p) reactions. The particle-γ coincidences were recorded with the silicon particle telescope (SiRi) and NaI(Tl) (CACTUS) arrays. In the context of these experimental results, the low-energy enhancement in the A~140 region is discussed. The 137,138,139La(n,γ) cross sections were calculated at s- and p-process temperatures using the experimentally measured nuclear level densities and γ-ray strength functions. As a result, good agreement is found between 139La(n,γ) calculated cross sections and previous measurements.},
doi = {10.1103/PhysRevC.95.045805},
journal = {Physical Review C},
number = 4,
volume = 95,
place = {United States},
year = {Fri Apr 21 00:00:00 EDT 2017},
month = {Fri Apr 21 00:00:00 EDT 2017}
}

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