Laser-Assisted (e, 2e) Collisions in the Symmetric/Asymmetric Coplanar Geometry

被引:5
|
作者
Makhoute, Abdelkader [1 ,2 ]
Khalil, Driss [1 ]
Ajana, Imane [1 ]
机构
[1] Moulay Ismail Univ, Fac Sci, Phys Radiat & Laser Matter Interact, Meknes BP 11201, Zitoune, Morocco
[2] Univ Libre Bruxelles, Fac Sci, Blvd Triomphe, B-1050 Brussels, Belgium
来源
ATOMS | 2019年 / 7卷 / 02期
关键词
(e; 2e) collisions; symmetric and asymmetric coplanar geometries; Coulomb-Volkov-Born approximation; laser parameters; triple differential cross section; ELECTRON-IMPACT IONIZATION; DIFFERENTIAL CROSS-SECTIONS; ATOM IONIZING COLLISIONS; PHOTON EXCITATION; SINGLE IONIZATION; E; 2E COLLISIONS; SYMMETRIC E; HELIUM; TRIPLE; SCATTERING;
D O I
10.3390/atoms7020040
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
In this review, we present a comprehensive survey of laser-assisted (e, 2e) reactions. The influence of a laser field on the dynamics of (e, 2e) collisions in atomic hydrogen is analyzed in the symmetric and asymmetric coplanar geometries. Particular attention is devoted to the construction of the dressed (laser-modified) target wave functions, in both the initial and final states. The calculation is performed in the framework of Coulomb-Volkov-Born approximation, where the initial and final electrons are described by Volkov wave functions, while the interaction of the incident electron with the target atom is treated in the first and the second Born approximation. The state of the ejected electron is described by a Volkov/Coulomb-Volkov wave function. A detailed account is also given of the techniques we have used to evaluate the scattering amplitudes. The influence of the laser parameters (frequency, intensity, and direction of polarization) on the angular distribution of the ejected electron is discussed, and a number of illustrative examples are given. The structure of the triple differential cross section in the vicinity of resonances is also analyzed.
引用
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页数:49
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