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Title: Neutron transfer in the C 13 + Au 197 reaction from gold isotope residuals

Abstract

Residual gold nuclei were produced in this paper via neutron transfer at multiple energies using a 130-MeV 13C beam incident on a stacked-foil target consisting of alternating layers of 197Au and 27Al. Production cross sections, over an energy range of 56 to 129 MeV, for seven gold isotopes and two gold isomers were determined through activation analysis. By using the Wilczynski binary transfer model with a modified version of the recoil formula and a standard evaporation model, we were able to reproduce the isotopic production cross sections at high beam energy, with some disagreement at lower beam energies. Finally, this limiting angular momentum model does not predict the transfer of sufficient angular momentum to reproduce the observed isomeric populations.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [2];  [5];  [2]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. iThemba LABS, Somerset West (South Africa)
  4. Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Program Manager; The Regents of the Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
Univ. of California (United States); National Research Foundation of South Africa; USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
OSTI Identifier:
1375991
Alternate Identifier(s):
OSTI ID: 1373608; OSTI ID: 1407975
Report Number(s):
LLNL-JRNL-699961
Journal ID: ISSN 2469-9985
Grant/Contract Number:  
AC52-07NA27344; AC02-05CH11231; 12-LR-238745; 92789; 83671; NA0003180
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 96; 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; low and intermediate energy heavy-ion reactions; models and methods for nuclear reactions; nuclear fusion; transfer reactions

Citation Formats

Daub, B. H., Bleuel, D. L., Wiedeking, M., Bernstein, L. A., Brickner, N. M., Brown, J. A., Goldblum, B. L., Holliday, K. S., Lundgren, J., and Moody, K. Neutron transfer in the C13+Au197 reaction from gold isotope residuals. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.96.024602.
Daub, B. H., Bleuel, D. L., Wiedeking, M., Bernstein, L. A., Brickner, N. M., Brown, J. A., Goldblum, B. L., Holliday, K. S., Lundgren, J., & Moody, K. Neutron transfer in the C13+Au197 reaction from gold isotope residuals. United States. doi:10.1103/PhysRevC.96.024602.
Daub, B. H., Bleuel, D. L., Wiedeking, M., Bernstein, L. A., Brickner, N. M., Brown, J. A., Goldblum, B. L., Holliday, K. S., Lundgren, J., and Moody, K. Tue . "Neutron transfer in the C13+Au197 reaction from gold isotope residuals". United States. doi:10.1103/PhysRevC.96.024602. https://www.osti.gov/servlets/purl/1375991.
@article{osti_1375991,
title = {Neutron transfer in the C13+Au197 reaction from gold isotope residuals},
author = {Daub, B. H. and Bleuel, D. L. and Wiedeking, M. and Bernstein, L. A. and Brickner, N. M. and Brown, J. A. and Goldblum, B. L. and Holliday, K. S. and Lundgren, J. and Moody, K.},
abstractNote = {Residual gold nuclei were produced in this paper via neutron transfer at multiple energies using a 130-MeV 13C beam incident on a stacked-foil target consisting of alternating layers of 197Au and 27Al. Production cross sections, over an energy range of 56 to 129 MeV, for seven gold isotopes and two gold isomers were determined through activation analysis. By using the Wilczynski binary transfer model with a modified version of the recoil formula and a standard evaporation model, we were able to reproduce the isotopic production cross sections at high beam energy, with some disagreement at lower beam energies. Finally, this limiting angular momentum model does not predict the transfer of sufficient angular momentum to reproduce the observed isomeric populations.},
doi = {10.1103/PhysRevC.96.024602},
journal = {Physical Review C},
number = 2,
volume = 96,
place = {United States},
year = {2017},
month = {8}
}

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