Effects of nuclear orientation on fusion and fission in the reaction using 238U target nucleus

Fission fragment mass distributions in the reaction of 30Si+238U were measured around the Coulomb barrier. At the above-barrier energies, the mass distribution showed a Gaussian shape. At the subbarrier energies, triple-
Fission fragment mass distributions in the reaction of 30Si+238U were measured around the Coulomb barrier. At the above-barrier energies, the mass distribution showed a Gaussian shape. At the subbarrier energies, triple-humped distribution was observed, which consists of symmetric fission and asymmetric fission peaked at AL/AH ~ 90/178. The asymmetric fission should be attributed to quasifission from the results of the measured evaporation residue (ER) cross-sections for 30Si+238U. The cross-section for 263Sg at the abovebarrier energy agree with the statistical model calculation which assumes that the measured fission cross-section originates from fusion-fission, whereas the one for 264 Sg measured at the sub-barrier energy is smaller than the calculation, which suggests the presence of quasifission.
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Author:Katsuhisa Nishio, Hiroshi Ikezoe, Shinichi Mitsuoka, Ichiro Nishinaka, Yuichiro Nagame, Tsutomu Ohtsuki, Katsuhisa Hirose, Stefan Hofmann
URN:urn:nbn:de:hebis:30-102044
Document Type:Article
Language:English
Date of Publication (online):2011/04/29
Year of first Publication:2010
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2011/04/29
Note:
This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial License, which permits unrestricted use, distribution, and reproduction in any noncommercial medium, provided the original work is properly cited.
Source:EPJ Web of Conferences 2, 10001 (2010) ; DOI 10.1051/epjconf/20100210001 ; CNR*09 - Second International Workshop on Compound Nuclear Reactions and Related Topics
HeBIS PPN:246166584
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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