Two deformation paths in proton-induced fission of 232Th
Two deformation paths in proton-induced fission of 232Th
复制标题
232Th质子诱发裂变的两条变形路径
DOI：
10.1016/0370-2693(96)01027-1
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发表时间：
1996
影响因子：
4.4
通讯作者：
Y. H. Chung
中科院分区：
文献类型：
--
作者：
Y. Nagame;I. Nishinaka;K. Tsukada;Y. Oura;S. Ichikawa;H. Ikezoe;Yuliang Zhao;K. Sueki;H. Nakahara;M. Tanikawa;T. Ohtsuki;H. Kudo;Y. Hamajima;K. Takamiya;Y. H. Chung
用双速度飞行时间法精确测量了入射能量为12.0 - 14.7MeV的~（232）Th质子诱发裂变中互补裂变碎片的速度。结果首次从实验上证实了裂变阈值能量、碎片总动能和质量分配方式之间的相关性：一类裂变过程具有较低的阈值能量，导致反射不对称的致密裂变组态;另一类裂变过程具有较高的阈值能量，导致对称的拉长裂变组态。
Velocities of complementary fission fragments have been accurately measured by a double velocity time-of-flight method in the proton-induced fission of232Th with incident energies from 12.0 to 14.7 MeV. The results experimentally demonstrate for the first time the correlation among the threshold energy, the total fragment kinetic energy, and the mass division mode in fission: one type of the fission process has a lower threshold energy and leads to a compact scission configuration with reflection asymmetry, and the other type has a higher threshold energy and leads to a symmetric elongated scission configuration.