Single- and two-photon ionization of neutral Ca

被引：13
|
作者：
McKenna, C [1 ]
van der Hart, HW [1 ]
机构：
[1] Queens Univ Belfast, Dept Appl Math & Theoret Phys, Belfast BT7 1NN, Antrim, North Ireland
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2003年 / 36卷 / 08期
关键词：
D O I：
10.1088/0953-4075/36/8/315
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using a combination of B-spline-based model potential techniques with R-matrix Floquet theory, we have carried out single-photon and two-photon ionization calculations of Ca. Good quantitative agreement is obtained with experiment for the single-photon ionization cross-section above the first threshold. We investigate the intensity dependence of the photoionization spectra, and also illustrate how laser-induced degenerate states affect it. Inclusion of the spatial and temporal profile of the laser pulse is examined. The two-photon ionization spectra, below the 3d(2)D(e) threshold, show a clear perturbation due to the interloping 4p(2) S-1(e) State.
引用
收藏
页码：1627 / 1643
页数：17
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