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

页码：443 / 445

页数：3