Theory of ionization processes in positron-atom collisions

被引：9

作者：

Della Picca, R.

Fiol, J.

Barrachina, R. O. ^{[1
]}

Rodriguez, V. D.

机构：

[1] Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2006年 / 247卷 / 01期

关键词：

ionization; collision dynamics; scattering; electron spectra; antimatter; positron impact; saddle-point electrons; Wannier; CDW;

D O I：

10.1016/j.nimb.2006.01.039

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We review past and present theoretical developments in the description of ionization processes in positron-atom collisions. Starting from an analysis that incorporates all the interactions in the final state on an equal footing and keeps an exact account of the few-body kinematics, we perform a critical comparison of different approximations, and how they affect the evaluation of the ionization cross section. Finally, we describe the appearance of fingerprints of capture to the continuum, saddle-point and other kinematical mechanisms. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：52 / 57

页数：6

共 18 条

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