2-ELECTRON ESCAPE NEAR-THRESHOLD - A CLASSICAL PROCESS

被引：83

作者：

ROST, JM

机构：

[1] Harvard University, Lyman Laboratories of Physics, Cambridge

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.72.1998

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For electron impact ionization of hydrogen the S matrix is determined by calculating Feynman's path integral semiclassically. The total ionization probability is in excellent agreement with the experiment. At a critical excess energy of 3.3 eV the differential cross section for the energy sharing between the continuum electrons undergoes a qualitative change which limits the range of the threshold behavior. The Wannier threshold law is confirmed, but only in the limit of vanishing excess energy.

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页码：1998 / 2001

页数：4

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