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Effects of the nucl...
Effects of the nuclear structure of fission fragments on the high-energy prompt fission γ -ray spectrum in U 235 (nth,f)
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- Makii, H. (author)
- Japan Atomic Energy Agency
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- Nishio, K. (author)
- Japan Atomic Energy Agency
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- Hirose, K. (author)
- Japan Atomic Energy Agency,Advanced Science Research Center
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- Orlandi, R. (author)
- Japan Atomic Energy Agency
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- Léguillon, R. (author)
- Japan Atomic Energy Agency
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- Ogawa, T. (author)
- Japan Atomic Energy Agency
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- Soldner, T. (author)
- Institut Laue Langevin
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- Köster, U. (author)
- Institut Laue Langevin
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- Pollitt, A. (author)
- Institut Laue Langevin
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- Hambsch, F. J. (author)
- European Commission Joint Research Centre, Brussels
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- Tsekhanovich, I. (author)
- N2P3 Institut National de Physique Nucleaire et de Physique des Particules
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- Aïche, M. (author)
- N2P3 Institut National de Physique Nucleaire et de Physique des Particules
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- Czajkowski, S. (author)
- N2P3 Institut National de Physique Nucleaire et de Physique des Particules
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- Mathieu, L. (author)
- N2P3 Institut National de Physique Nucleaire et de Physique des Particules
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- Petrache, C. M. (author)
- University of Paris-Saclay
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- Astier, A. (author)
- University of Paris-Saclay
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- Guo, S. (author)
- University of the Chinese Academy of Sciences,Institute of Modern Physics, Chinese Academy of Sciences
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- Ohtsuki, T. (author)
- Kyoto University
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- Sekimoto, S. (author)
- Kyoto University
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- Takamiya, K. (author)
- Kyoto University
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- Frost, R. J.W. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Kawano, T. (author)
- Los Alamos National Laboratory
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Physical Review C. - 2469-9985. ; 100:4
- Related links:
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http://dx.doi.org/10...
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Abstract
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- The prompt fission γ-ray energy spectrum for cold-neutron-induced fission of U235 was measured in the energy range Eγ=0.8-20MeV, by gaining a factor of about 105 in statistics compared to the measurements performed so far. The spectrum exhibits local bump structures at Eγ≈4MeV and ≈6MeV, and also a broad one at ≈15MeV. In order to understand the origins of these bumps, the γ-ray spectra were calculated using a statistical Hauser-Feshbach model, taking into account the deexcitation of all the possible primary fission fragments. It is shown that the bump at ≈4MeV is created by the transitions between the discrete levels in the fragments around Sn132, and the bump at ≈6MeV mostly comes from the complementary light fragments. It is also indicated that a limited number of nuclides, which have high-spin states at low excitation energies, can contribute to the bump structure around Eγ≈15MeV, induced by the transition feeding into the low-lying high-spin states.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Makii, H.
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Nishio, K.
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Hirose, K.
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Orlandi, R.
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Léguillon, R.
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Ogawa, T.
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Soldner, T.
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Köster, U.
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Pollitt, A.
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Hambsch, F. J.
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Tsekhanovich, I.
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Aïche, M.
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Czajkowski, S.
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Mathieu, L.
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Petrache, C. M.
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Astier, A.
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Guo, S.
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Ohtsuki, T.
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Sekimoto, S.
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Takamiya, K.
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Frost, R. J.W.
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Kawano, T.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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Physical Review ...
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Lund University