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Second Born approximation; free–free transition; bichromatic laser field; multiphoton process.

We study the elastic scattering of atomic argon by electron in the presence of a bichromatic laser field in the second Born approximation. The target atom is approximated by a simple screening potential and the continuum states of the impinging and emitting electrons are described as Volkov states. We evaluate the S-matrix elements numerically. The dependence of differential cross-section on the relative phase between the two laser components is presented. The results obtained in the first and second Born approximations are compared and analysed.

Bin Zhou¹ Ming-Yang Zheng² Da-Yong Wen³

1. Physics Lab, Nanxu College, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People’s Republic of China
2. State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
3. Nanxu College, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, People’s Republic of China

Published

March 2012

Manuscript received

28 May 2011

Manuscript revised

5 August 2011

Accepted

14 October 2011