Effects of nuclear orientation on fusion and fission process in heavy ion reactions

被引：0

作者：

Nishio, K. ^{[1
]}

Ikezoe, H. ^{[1
]}

Mitsuoka, S. ^{[1
]}

Nishinaka, I. ^{[1
]}

Watanabe, Y. ^{[2
]}

Nagame, Y. ^{[1
]}

Ohtsuki, T. ^{[3
]}

Hirose, K.

Hofmann, S. ^{[4
,5
]}

机构：

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

[2] High Energy Accelerator Org, Tsukuba, Ibaraki 3050801, Japan

[3] Tohoku Univ, Lab Nucl Sci, Tokyo, Japan

[4] Gesellschaft Schwerionenforschung mbH, D-64220 Darmstadt, Germany

[5] Goethe Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany

来源：

PERSPECTIVES IN NUCLEAR PHYSICS | 2009年 / 1120卷

基金：

日本学术振兴会;

关键词：

Fusion; Fission; Quasifission; QUASI-FISSION;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Effects of nuclear orientation on fission fragment mass distributions in the reaction of Si-30 + U-238 were investigated. The mass distributions showed a Gaussian shape in the above barrier region, having a character of fusion-fission. At the sub-barrier energies, the asymmetric fission component around A(L)/A(H) approximate to 90/178 appears, representing quasifision. The measured evaporation residue cross sections for Si-30 + U-238 in [1] have also suggested the competition between fusion and quasifission at sub-barrier region, whereas the fusion is the main process in the above barrier region. These results suggest an influence of orientation effects of the deformed target nuclei on the reaction. Discussion will be given on the difference in the mass distributions between Si-30 + U-238 and S-36 + U-238.

引用

页码：275 / +

页数：2

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