Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation

被引:48
作者
Dreissigacker, Ingo [1 ]
Lein, Manfred
机构
[1] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany
来源
PHYSICAL REVIEW A | 2014年 / 89卷 / 05期
关键词
ANGULAR-DISTRIBUTIONS; IONIZATION; ASYMMETRY; ABSORPTION; EXCHANGE; FENCHONE; CAMPHOR;
D O I
10.1103/PhysRevA.89.053406
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Motivated by recent experiments on circular dichroism in the photoelectron momentum distributions from strong-field ionization of chiral molecules [C. Lux et al., Angew. Chem. Int. Ed. 51, 5001 ( 2012); C. S. Lehmann et al., J. Chem. Phys. 139, 234307 ( 2013)], we investigate the origin of this effect theoretically. We show that it is not possible to describe photoelectron circular dichroism with the commonly used strong-field approximation due to its plane-wave nature. We therefore apply the Born approximation to the scattering state and use this as a continuum-state correction in the strong-field approximation. We obtain electron distributions for the molecules camphor and fenchone. In order to gain physical insight into the process, we study the contributions of individual molecular orientations.
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页数:6
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