Observation of beta-delayed proton decay of 69Kr

被引：0
|
作者：
Xu, XJ [1 ]
Huang, WX [1 ]
Ma, RC [1 ]
Gu, ZD [1 ]
Yang, YF [1 ]
Wang, YY [1 ]
Dong, CF [1 ]
机构：
[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
来源：
HIGH ENERGY PHYSICS & NUCLEAR PHYSICS-ENGLISH EDITION | 1997年 / 21卷 / 01期
关键词：
exotic nuclide; beta-delayed particle decay; mass excess;
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：
A new group of protons at laboratory energy of 4.07 +/- 0.05 MeV with half-life of 32 +/- 10 ms was discovered via observing the decay proton spectrum produced in the S-32 + Ca reaction. By reaction channel analysis and comparing with theoretical prediction, this new proton radioactivity was assigned to the beta-delayed proton decay of Kr-69 produced in the Ca-40 (S-32, 3n) reaction, corresponding to decay of the T = 3/2 isobaric analog state in Br-69 to the ground state of Se-68. Combining this measurement with the Coulomb displacement energy calculation yields a mass excess for Kr-69 of -32.15 +/- 0.30 MeV. The partial decay scheme of Kr-69 was proposed.
引用
收藏
页码：443 / 445
页数：3
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