arXiv 2111.075412021-11nucl-thnucl-ex

$α$敲除反应作为$α$衰变核中$α$形成的新探针

$α$ knockout reaction as a new probe for $α$ formation in $α$-decay nuclei

Kazuki Yoshida, Junki Tanaka

备注：: 5 pages, 5 figures
DOI：: 10.1103/PhysRevC.106.014621

摘要：

$α$ -衰变现象已经研究了一个多世纪，但$α$粒子的形成机制及其隧穿过程尚未完全理解。作为$α$衰变寿命测量的替代方法，我们提出了质子诱导的$α$敲除反应（$p$，$pα$），作为$α$衰变核表面$α$形成几率的新探针。用畸变波脉冲近似描述了$^{210,212}$ Po（$p$，$pα$）$^{206,208}$ Pb反应.结果表明，$α$敲除截面的$^{212}$ Po/ $^{210}$ Po比值与由寿命测量确定的表面$α$形成概率的比值一致.结果表明，（$p$，$pα$）截面是表面$α$形成几率的直接探针，而表面形成几率是导致我们完全理解$α$衰变现象的一个基本量.

英文摘要：

The $α$-decay phenomennon has been studied for more than a century but the mechanism of the $α$ particle formation and its tunneling process have not yet been fully understood. As an alternative to the $α$-decay lifetime measurement, we propose the proton-induced $α$ knockout reaction, ($p$,$pα$), as a new probe for the surface $α$ formation probability of $α$-decay nuclei. The $^{210,212}$Po($p$,$pα$)$^{206,208}$Pb reaction is described by the distorted-wave impulse approximation framework. It shows that the $^{212}$Po/$^{210}$Po ratio of the $α$ knockout cross sections agrees with that of the surface $α$ formation probabilities determined by lifetime measurements. The result implies that the ($p$,$pα$) cross section is a direct probe for the surface $α$ formation probability, which is an essential quantity to lead us to a complete understanding of the $α$-decay phenomenon.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文