TRANSIENT TIMES OF FISSION IN AR-40+TH-232 PERIPHERAL COLLISIONS

被引:27
作者
ECKERT, EM
KUHMICHEL, A
POCHODZALLA, J
HILDENBRAND, KD
LYNEN, U
MULLER, WFJ
RABE, HJ
SANN, H
STELZER, H
TRAUTMANN, W
TROCKEL, R
WADA, R
CERRUTI, C
LHENORET, P
LUCAS, R
MAZUR, C
NGO, C
RIBRAG, M
TOMASI, E
DEMEYER, A
GUINET, D
机构
[1] GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT,GERMANY
[2] CENS,F-91191 GIF SUR YVETTE,FRANCE
[3] UNIV LYON 1,F-69622 VILLEURBANNE,FRANCE
关键词
D O I
10.1103/PhysRevLett.64.2483
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Peripheral Ar40+232Th collisions at a bombarding energy E/A=30 MeV were studied by measuring coincidences of fission fragments with projectile fragments detected near the grazing angle. It is found that the sequential fission of the highly excited target residue nuclei is severely hindered if their excitation energies, determined from the measured recoil momenta, exceed a value of abour 50 75 MeV. A transient time of fission of the order of 10-20 s is deduced. © 1990 The American Physical Society.
引用
收藏
页码:2483 / 2486
页数:4
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