强电荷屏蔽下的电子俘获率  

Electron Capture in Strong Electron Screening

作　　者：罗志全[1] 刘门全[2] 林理彬[1] 彭秋和[3] 

机构地区：[1]四川大学物理系,四川成都610065 [2]西华师范大学理论物理研究所,四川南充637002 [3]南京大学天文系,南京210093

出　　处：《天文学报》2005年第3期253-257,共5页Acta Astronomica Sinica

基　　金：国家自然科学基金(10347008)资助

摘　　要：分析了电荷屏蔽对超新星前身星环境下的电子俘获反应的影响,分析中强电荷屏蔽势能采用了最近人们利用线性响应理论给出的结果,对核素56Co,56Fe,56Mn电子俘获率的分析计算表明,在低温高密情形下,电荷屏蔽对电子俘获反应的影响较先前的分析的影响程度略小,但电荷屏蔽对电子俘获反应的影响仍然显著.The influence of electron screening on electron capture in massive stars at the presupernova stage is discussed. The strong screening potential devierd by linear response theory is used in the discussion. It is showed by calculating the capture rates for 56Co, 56Fe and 56Mn that the effect of the electron screening on electron capture in the paper is slightly smaller than it in previously analysis. However, the effect of the electron screening on electron capture is still obvious.

关 键 词：核合成 超新星 普通 电荷屏蔽 电子俘获 

分 类 号：P145[天文地球—天体物理]