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	Intensity dependence of nonsequential double ionization of helium in ir+xuv two-color laser fields
	Jin,Facheng1; Chen,Jing2; Yang,Yujun3,4; Yan,Zong-Chao5; Wang,Bingbing1
刊名	Journal of physics b: atomic, molecular and optical physics
	2016-09-22
卷号	49期号:19
关键词	Nonsequential double ionization Infrared laser field Extreme ultraviolet laser field Momentum spectrum 42.65.-k 42.50.hz 32.80.rm
ISSN号	0953-4075
DOI	10.1088/0953-4075/49/19/195602
英文摘要	Abstract by applying the frequency-domain theory, we investigate the dependence of momentum spectra on laser intensity in a nonsequential double ionization (nsdi) process of helium in infrared (ir) and extreme ultraviolet (xuv) two-color laser fields. we find that the two-color laser fields play distinct roles in an nsdi process, where the ir laser field mainly determines the width of each band, and the xuv laser field mainly plays a role on the nsdi probability. furthermore, an nsdi process can be decoupled into a two-step process: an above-threshold ionization (ati), followed by a laser-assisted collision (lac). it is found that, the ir laser field is responsible for broadening the peak in the ati process and providing additional momenta to the two ionized electrons in the lac process; while the xuv laser field plays a crucial role on the strength of the spectrum in the ati process, and influences the radii of orbits in momentum space in the lac process.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0953-4075-49-19-195602
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373524
专题	物理研究所
作者单位	1.Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China 2.Institute of Applied Physics and Computational Mathematics, P O Box 8009, Beijing 100088, People's Republic of China 3.Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, People's Republic of China 4.Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, People's Republic of China 5.Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
推荐引用方式 GB/T 7714	Jin,Facheng,Chen,Jing,Yang,Yujun,et al. Intensity dependence of nonsequential double ionization of helium in ir+xuv two-color laser fields[J]. Journal of physics b: atomic, molecular and optical physics,2016,49(19).
APA	Jin,Facheng,Chen,Jing,Yang,Yujun,Yan,Zong-Chao,&Wang,Bingbing.(2016).Intensity dependence of nonsequential double ionization of helium in ir+xuv two-color laser fields.Journal of physics b: atomic, molecular and optical physics,49(19).
MLA	Jin,Facheng,et al."Intensity dependence of nonsequential double ionization of helium in ir+xuv two-color laser fields".Journal of physics b: atomic, molecular and optical physics 49.19(2016).

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