Influence of high-electronegativity atoms on the 7 Be decay rate

Abstract

First-principle calculations within the density-functional theory framework are used to study the effect of high electronegativity atoms on decay rate of the 7Be nucleus. In this study, the electron-capture decay rate of the 7Be nucleus is investigated in Be(OH)2, BeF2, BeF3, BeF4, BeCl2, BeCl3, BeCl4, C36, and C60 species. It was found that the more decrease of the 7Be decay rate was estimated in the BeF4 (2.04%) and BeCl4 (1.99%) relative to the Be metal. Furthermore, the half-life of 7Be is different in various positions within C36 and C60. The 7Be half-life in 7Be@C36 is greater than that in other fullerene compounds investigated, while the 7Be half-life inside C60 is smaller.