Quantum reflection model for ionization rate coefficients in cold metastable helium collisions

被引：7

作者：

Dickinson, A. S. ^{[1
]}

机构：

[1] Univ Newcastle Upon Tyne, Sch Nat Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2007年 / 40卷 / 16期

关键词：

D O I：

10.1088/0953-4075/40/16/F02

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple, quantum-reflection based, model is presented for describing ionization in collisions of cold metastable helium atoms (He*). This model employs only the van der Waals coefficient and the reduced mass. For atoms reaching short distances an ionization probability of 100% is assumed. The ionization rate coefficient can be written in closed form. Good agreement with more elaborate calculations for collisions of He-3* and He-4* is obtained for temperatures up to a few mK.

引用

页码：F237 / F240

页数：4

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