Effects of photon momentum in nonrelativistic (γ, 2e) processes

被引：11

作者：

Galstyan, A. G. ^{[1
]}

Chuluunbaatar, O. ^{[2
]}

Popov, Yu. V. ^{[3
]}

Piraux, B. ^{[4
]}

机构：

[1] Moscow MV Lomonosov State Univ, Phys Fac, Moscow, Russia

[2] Joint Inst Nucl Res, Dubna, Russia

[3] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia

[4] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, B-1348 Louvain, Belgium

来源：

PHYSICAL REVIEW A | 2012年 / 85卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

DIFFERENTIAL CROSS-SECTIONS; DOUBLE-IONIZATION; PHOTOIONIZATION; HELIUM;

D O I：

10.1103/PhysRevA.85.023418

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effects of nonzero photon momentum on the triply differential cross section (TDCS) for (gamma, 2e) processes. Due to the low value of the photon momentum, these effects are weak and manifest only in special kinematical conditions such as the back-to-back emission of the electrons with equal energy sharing. Helium and a few light heliumlike ions are treated in detail. Quite unexpectedly, the magnitude of these effects is maximal for relatively small photon energies. However, although this effect on the TDCS remains rather small, of the order of a few mb eV(-1) sr(-2), it is sufficient to be observed experimentally.

引用

页数：5

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