Proton emission with a screened electrostatic barrier

被引：24

作者：

Budaca, R. ^{[1
,2
]}

Budaca, A. I. ^{[1
]}

机构：

[1] Horia Hulubei Natl Inst Phys & Nucl Engn, RO-077125 Bucharest, Romania

[2] Acad Romanian Scientists, 54 Splaiul Independenei, RO-050094 Bucharest, Romania

来源：

EUROPEAN PHYSICAL JOURNAL A | 2017年 / 53卷 / 08期

关键词：

NUCLEAR-DATA SHEETS; DECAY HALF-LIVES; RP-PROCESS; DRIP-LINE; RADIOACTIVITY; SYSTEMATICS; (CO-53)M;

D O I：

10.1140/epja/i2017-12352-0

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：

Half-lives of proton emission for Z >= 51 nuclei are calculated within a simple analytical model based on the WKB approximation for the barrier penetration probability which includes the centrifugal and overlapping effects besides the electrostatic repulsion. The model has a single free parameter associated to a Hulthen potential which emulates a Coulomb electrostatic interaction only at short distance. The agreement with experimental data is very good for most of the considered nuclei. Theoretical predictions are made for few cases with uncertain emitting state configuration or incomplete decay information. The model's assignment of the proton orbital momentum is in agreement with the differentiation of the experimental data by orbital momentum values realized with a newly introduced correlation formula.

引用

页数：8

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