Statistical properties of , and cross section calculation
Abstract
The level density and γ-ray strength function (γSF) of Pu243 have been measured in the quasicontinuum using the Oslo method. Excited states in Pu243 were populated using the Pu242(d,p) reaction. The level density closely follows the constant-temperature level density formula for excitation energies above the pairing gap. The γSF displays a double-humped resonance at low energy as also seen in previous investigations of actinide isotopes. The structure is interpreted as the scissors resonance and has a centroid of ωSR=2.42(5) MeV and a total strength of BSR=10.1(15)μN2, which is in excellent agreement with sum-rule estimates. The measured level density and γSF were used to calculate the Pu242(n,γ) cross section in a neutron energy range for which there were previously no measured data.
- Authors:
-
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of Oslo, Oslo (Norway)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of California, Berkeley, CA (United States)
- Institut de Physique Nucleaire d'Orsay, Orsay Cedex (France)
- Ohio Univ., Athens, OH (United States)
- iThemba LABS, Somerset West (South Africa)
- Publication Date:
- Research Org.:
- Ohio Univ., Athens, OH (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
- OSTI Identifier:
- 1338840
- Alternate Identifier(s):
- OSTI ID: 1236515; OSTI ID: 1430666
- Grant/Contract Number:
- NA0002905; W-7405-Eng-48; AC52-07NA27344; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 1; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; gamma strength function; pygmy resonance
Citation Formats
Laplace, T. A., Zeiser, F., Guttormsen, M., Larsen, A. C., Bleuel, D. L., Bernstein, L. A., Goldblum, B. L., Siem, S., Garotte, F. L. Bello, Brown, J. A., Campo, L. Crespo, Eriksen, T. K., Giacoppo, F., Gorgen, A., Hadynska-Klek, K., Henderson, R. A., Klintefjord, M., Lebois, M., Renstrom, T., Rose, S. J., Sahin, E., Tornyi, T. G., Tveten, G. M., Voinov, A., Wiedeking, M., Wilson, J. N., and Younes, W. Statistical properties of Pu243 , and Pu242(n,γ) cross section calculation. United States: N. p., 2016.
Web. doi:10.1103/PhysRevC.93.014323.
Laplace, T. A., Zeiser, F., Guttormsen, M., Larsen, A. C., Bleuel, D. L., Bernstein, L. A., Goldblum, B. L., Siem, S., Garotte, F. L. Bello, Brown, J. A., Campo, L. Crespo, Eriksen, T. K., Giacoppo, F., Gorgen, A., Hadynska-Klek, K., Henderson, R. A., Klintefjord, M., Lebois, M., Renstrom, T., Rose, S. J., Sahin, E., Tornyi, T. G., Tveten, G. M., Voinov, A., Wiedeking, M., Wilson, J. N., & Younes, W. Statistical properties of Pu243 , and Pu242(n,γ) cross section calculation. United States. https://doi.org/10.1103/PhysRevC.93.014323
Laplace, T. A., Zeiser, F., Guttormsen, M., Larsen, A. C., Bleuel, D. L., Bernstein, L. A., Goldblum, B. L., Siem, S., Garotte, F. L. Bello, Brown, J. A., Campo, L. Crespo, Eriksen, T. K., Giacoppo, F., Gorgen, A., Hadynska-Klek, K., Henderson, R. A., Klintefjord, M., Lebois, M., Renstrom, T., Rose, S. J., Sahin, E., Tornyi, T. G., Tveten, G. M., Voinov, A., Wiedeking, M., Wilson, J. N., and Younes, W. Fri .
"Statistical properties of Pu243 , and Pu242(n,γ) cross section calculation". United States. https://doi.org/10.1103/PhysRevC.93.014323. https://www.osti.gov/servlets/purl/1338840.
@article{osti_1338840,
title = {Statistical properties of Pu243 , and Pu242(n,γ) cross section calculation},
author = {Laplace, T. A. and Zeiser, F. and Guttormsen, M. and Larsen, A. C. and Bleuel, D. L. and Bernstein, L. A. and Goldblum, B. L. and Siem, S. and Garotte, F. L. Bello and Brown, J. A. and Campo, L. Crespo and Eriksen, T. K. and Giacoppo, F. and Gorgen, A. and Hadynska-Klek, K. and Henderson, R. A. and Klintefjord, M. and Lebois, M. and Renstrom, T. and Rose, S. J. and Sahin, E. and Tornyi, T. G. and Tveten, G. M. and Voinov, A. and Wiedeking, M. and Wilson, J. N. and Younes, W.},
abstractNote = {The level density and γ-ray strength function (γSF) of Pu243 have been measured in the quasicontinuum using the Oslo method. Excited states in Pu243 were populated using the Pu242(d,p) reaction. The level density closely follows the constant-temperature level density formula for excitation energies above the pairing gap. The γSF displays a double-humped resonance at low energy as also seen in previous investigations of actinide isotopes. The structure is interpreted as the scissors resonance and has a centroid of ωSR=2.42(5) MeV and a total strength of BSR=10.1(15)μN2, which is in excellent agreement with sum-rule estimates. The measured level density and γSF were used to calculate the Pu242(n,γ) cross section in a neutron energy range for which there were previously no measured data.},
doi = {10.1103/PhysRevC.93.014323},
journal = {Physical Review C},
number = 1,
volume = 93,
place = {United States},
year = {Fri Jan 29 00:00:00 EST 2016},
month = {Fri Jan 29 00:00:00 EST 2016}
}
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