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Dependence of Fission-Fragment Properties On Excitation Energy For Neutron-Rich Actinides
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- Ramos, D. (author)
- University of Southern California
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- Rodriguez-Tajes, C. (author)
- University of Southern California,Grand Accélérateur National d'Ions Lourds (GANIL)
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- Caamano, M. (author)
- University of Southern California
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- Casarejos, E. (author)
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- (creator_code:org_t)
- ISBN 9782759819706
- 2016-03-15
- 2016
- English.
- In: EPJ Web of Conferences. - : EDP Sciences. - 2101-6275 .- 2100-014X. - 9782759819706 ; 111
- Conference paper (peer-reviewed)
Abstract
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- Experimental access to full isotopic fragment distributions is very important to determine the features of the fission process. However, the isotopic identification of fission fragments has been, in the past, partial and scarce. A solution based on the use of inverse kinematics to study transfer-induced fission of exotic actinides was carried out at GANIL, resulting in the first experiment accessing the full identification of a collection of fissioning systems and their corresponding fission fragment distribution. In these experiments, a U-238 beam at 6.14 AMeV impinged on a carbon target to produce fissioning systems from U to Am by transfer reactions, and Cf by fusion reactions. Isotopic fission yields of Cf-250, Cm-244, Pu-240, Np-239 and U-238 are presented in this work. With this information, the average number of neutrons as a function of the atomic number of the fragments is calculated, which reflects the impact of nuclear structure around Z=50, N=80 on the production of fission fragments. The characteristics of the Super Long, Standard I, Standard II, and Standard III fission channels were extracted from fits of the fragment yields for different ranges of excitation energy. The position and contribution of the fission channels as function of excitation energy are presented.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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- kon (subject category)
- ref (subject category)
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- Ramos, D.
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- Caamano, M.
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- Audouin, L.
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- Casarejos, E.
- Clement, E.
- Cortina, D.
- Delaune, O.
- Derkx, X.
- Dijon, A.
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- de France, G.
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- Jacquot, B.
- Navin, A.
- Paradela, C.
- Rejmund, M.
- Roger, T.
- Salsac, M. D.
- Schmitt, C.
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- Chalmers University of Technology
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