HIGH-SPIN STATES IN NEUTRON-RICH NUCLEI FROM SPONTANEOUS FISSION

被引：0
|
作者：
BUTLERMOORE, K
ZHU, S
ZHAO, X
HAMILTON, JH
RAMAYYA, AV
LU, Q
MA, WC
PEKER, LK
KORMICKI, J
DENG, JK
GORE, P
SHI, D
JONES, EF
XIE, H
GAO, WB
COLE, JD
ARYAEINEJAD, R
LEE, IY
JOHNSON, NR
MCGOWAN, FK
BEMIS, CE
TERAKOPIAN, G
OGANESSIAN, Y
机构：
[1] IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415
[2] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831
[3] JOINT INST NUCL RES,DUBNA,RUSSIA
来源：
NUCLEI FAR FROM STABILITY/ATOMIC MASSES AND FUNDAMENTAL CONSTANTS 1992 | 1993年 / 132期
关键词：
D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
One fragment-gamma-gamma and three gamma-gamma coincidence measurements of the prompt gamma-rays from the fragments produced in the spontaneous fission (SF) of Cf-252 and very recently of Pu-242 were carried out with a 20 Ge detector ball at HHIRF. With our high statistics, gamma-gamma-gamma coincidences where the two gates are on transitions in the two partner Fragments were extracted. Comparing the Cf-252 and (242)pU data allowed unique placements of many transitions. New, higher spin states were observed in many nuclei, up to 16(+) in some of the heavy partners. Levels in several nuclei were observed for the first time. Studies of the fission process included measured relative branchings to the In to 6n channels. Much data remains to be analyzed. These data provide new insights into the changing structures at higher spins of many neutron-rich nuclei and the fission process.
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页码：551 / 556
页数：6
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