Role of elastic scattering in high-order above threshold ionization

doi:10.1088/1674-1056/24/10/103203

Abstract We investigate the target and intensity dependence of plateau in high-order above threshold ionization (HATI) by simulating the two-dimensional (2D) momentum distributions and the energy spectra of photoelectrons in HATI of rare gas atoms through using the quantitative rescattering model. The simulated results are compared with the existing experimental measurements. It is found that the slope of the plateau in the HATI photoelectron energy spectrum highly depends on the structure of elastic scattering differential cross section (DCS) of laser-induced returning electron with its parent ion. The investigations of the long- and short-range potential effects in the DCSs reveal that the short-range potential, which reflects the structure of the target, plays an essential role in generating the HATI photoelectron spectra.

Keywords: above threshold ionization plateau returning electron wave packet elastic scattering

Received: 07 March 2015
Revised: 21 April 2015
Accepted manuscript online:

PACS:	32.80.Rm	(Multiphoton ionization and excitation to highly excited states)
	32.80.Fb	(Photoionization of atoms and ions)
	42.50.Hz	(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11274219), the STU Scientific Research Foundation for Talents, and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, China.

Corresponding Authors: Chen Zhang-Jin
E-mail: chenzj@stu.edu.cn

Cite this article:

Chen Zhang-Jin (陈长进), Ye Jian-Mian (叶坚绵), Xu Yang-Bing (徐杨兵) Role of elastic scattering in high-order above threshold ionization 2015 Chin. Phys. B 24 103203

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