Low-energy electron-helium scattering in a Nd-YAG laser field

被引：4

作者：

Ajana, I. ^{[1
]}

Makhoute, A. ^{[1
,2
]}

Khalil, D. ^{[1
]}

机构：

[1] Univ Moulay Ismail, Fac Sci, UFR Phys Rayonnement & Interact Laser Matiere, Meknes, Morocco

[2] Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2014年 / 192卷

关键词：

Electron-impact excitation; Low collision energy; Second-order Born approximation; Differential cross sections; Sturmian basis expansion; 2ND BORN APPROXIMATION; PHOTON EXCITATION; ATOM COLLISIONS; POLARIZATION;

D O I：

10.1016/j.elspec.2013.12.016

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We study the electron-impact excitation of atomic helium, in the presence of a linearly polarized Nd-YAG laser field, accompanied by the transfer of l photons, for low collision energy of 25 eV and laser intensity of 5.3 x 10(11) W cm(-2). The second-order Born approximation has been used to calculate the differential cross sections. Detailed calculations of the scattering amplitudes are performed by using the Sturmian basis expansion. A detailed analysis is made of the excitation of the 1(1)S -> 2(1)S and 1(1)S -> 2(1)P transitions. We discuss the behavior and the variation of the cross sections corresponding to the excitation process for various geometrical configurations. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：19 / 25

页数：7

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