UNIFIED DESCRIPTION OF THE 2-NU-BETA-BETA DECAY IN SPHERICAL AND DEFORMED-NUCLEI

被引：45
作者：
RADUTA, AA [1 ]
FAESSLER, A [1 ]
DELION, DS [1 ]
机构：
[1] INST ATOM PHYS,BUCHAREST,ROMANIA
来源：
NUCLEAR PHYSICS A | 1993年 / 564卷 / 02期
关键词：
D O I：
10.1016/0375-9474(93)90516-Z
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：
The Gamow-Teller double-beta decay, with two neutrinos in the final state, is calculated within the QRPA approach. Higher-order corrections to the RPA result are studied within a boson expansion formalism. The specific feature of the present paper is that the single-particle basis is obtained through angular-momentum projection from an orthogonal set of deformed wave functions. The effect of deformation on the Gamow-Teller transition amplitude, as well as on the the single beta- and beta+ strengths distribution is obtained. The Gamow-Teller amplitude is calculated for the transitions 0i+ --> 0f+ and 0i+ --> 2f+. The method is applied to the 2nubetabeta decay probability Se-82(34) to Kr-82(36).
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页码：185 / 203
页数：19
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