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-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.
|Author:||Katsuhisa Nishio, Hiroshi Ikezoe, Shinichi Mitsuoka, Ichiro Nishinaka, Yuichiro Nagame, Tsutomu Ohtsuki, Katsuhisa Hirose, Stefan Hofmann|
|Date of Publication (online):||29.04.2011|
|Year of first Publication:||2010|
|Publishing Institution:||Univ.-Bibliothek Frankfurt am Main|
|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|
|Dewey Decimal Classification:||530 Physik|
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.
|Licence (German):||Veröffentlichungsvertrag für Publikationen ohne Print on Demand|