Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation
Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation
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DOI：
10.1103/physreva.89.053406
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发表时间：
2014-05-07
影响因子：
2.9
通讯作者：
Lein, Manfred
中科院分区：
文献类型：
--
作者：
Dreissigacker, Ingo;Lein, Manfred
受近年来手性分子强场电离光电子动量分布圆二色性实验的启发[C。Lux等人，Angew. Chem.Int.Ed.51，5001（2012）; C. S. Lehmann等人，J. Chem.Phys.139，234307（2013）]，我们从理论上研究了这种效应的起源。我们表明，它是不可能的，以描述光电子圆二色性与常用的强场近似，由于其平面波的性质。因此，我们将玻恩近似应用于散射态，并将其用作强场近似中的连续态修正。我们得到了樟脑和小茴香酮分子的电子分布。为了获得物理洞察的过程中，我们研究了单个分子取向的贡献。
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.