The gamma-ray spectra of halocarbons in positron-electron annihilation process

被引：4

作者：

Ma, X. G. ^{[1
]}

Zhu, Y. H. ^{[1
]}

Liu, Y. ^{[1
]}

机构：

[1] Ludong Univ, Sch Phys & Optoelect Engn, Yantai 264025, Peoples R China

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 38期

基金：

中国国家自然科学基金;

关键词：

Positron-electron annihilation; Halogencarbons; Gamma-ray spectra; LOVO orbitals; Positrophilic electrons; MOMENTUM SPECTROSCOPY; MOLECULES; ATOMS;

D O I：

10.1016/j.physleta.2015.07.025

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The gamma-ray spectra of the positron annihilation process in methane CH4 and its fully substituent halocarbons CF4, CCl4, and CBr4 have been studied. The theoretical predictions of the inner valence electrons agree well with the experimental measurements for all these molecules. That the outermost s electrons in carbon or halogen atoms dominate the gamma-ray spectra has been confirmed for the first time. The positrophilic site has also been found in these molecules and understanding of annihilation processes in molecules has been enhanced. (C) 2015 Published by Elsevier B.V.

引用

页码：2306 / 2310

页数：5

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