Positron Binding and Annihilation in Alkane Molecules.
Positron Binding and Annihilation in Alkane Molecules.
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DOI：
10.1103/physrevlett.123.113402
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发表时间：
2019-04
影响因子：
8.6
通讯作者：
A. Swann;G. Gribakin
中科院分区：
文献类型：
--
作者：
A. Swann;G. Gribakin
A model-potential approach has been developed to study positron interactions with molecules. Binding energies and annihilation rates are calculated for positron bound states with a range of alkane molecules, including rings and isomers. The calculated binding energies are in good agreement with experimental data, and the existence of a second bound state for n-alkanes (C_{n}H_{2n+2}) with n≥12 is predicted in accord with experiment. The annihilation rate for the ground positron bound state scales linearly with the square root of the binding energy.
