Effects of nuclear orientation on fusion and fission process for reactions using 238U target nucleus

被引：0

作者：

Nishio, K. ^{[1
]}

Ikezoe, H. ^{[1
]}

Mitsuoka, S. ^{[1
]}

Nishinaka, I. ^{[1
]}

Makii, H. ^{[1
]}

Watanabe, Y. ^{[2
]}

Nagame, Y. ^{[1
]}

Ohtsuki, T.

Hirose, K.

Hofmann, S.

机构：

[1] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan

[2] Goethe Univ Frankfurt, Frankfurt, Germany

来源：

TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS - VII | 2010年 / 1238卷

关键词：

Fusion; Fission; Quasifission; QUASI-FISSION;

D O I：

10.1063/1.3455957

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Fission fragment mass distributions in the reaction of Si-30+U-238 were measured at the energies around the Coulomb barrier. At the above-barrier energies, the mass distribution showed Gaussian shape. At the sub-barrier energies, asymmetric fission mode peaked at A(L)/A(H) approximate to 90/178 was observed. The asymmetric fission should be attributed to quasifission from the results of the measured evaporation residue (ER) cross-sections produced by Si-30+U-238. The cross-section for (263)Sg at the above-barrier energy agree with the statistical model calculation which assumes that the measured fission cross-sections are equal to the fusion cross-sections, whereas the one for (264)Sg measured at the sub-barrier energy is smaller than the calculation, indicating the presence for quasifission. The fragment mass distributions are compared to those for (36)s+U-238 and Ar-40+U-238.

引用

页码：307 / +

页数：2

共 19 条

[1] Effects of nuclear orientation on fusion and fission process for reactions using 238U target nucleus
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