Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
Phys Rev Lett. 2013 May 24;110(21):213002. doi: 10.1103/PhysRevLett.110.213002. Epub 2013 May 20.
Dissociative single ionization of H(2) induced by extreme ultraviolet photons from an attosecond pulse train has been studied in a kinematically complete experiment. Depending on the electron kinetic energy and the alignment of the molecule with respect to the laser polarization axis, we observe pronounced asymmetries in the relative emission directions of the photoelectron and the H(+) ion. The energy-dependent asymmetry pattern is explained by a semiclassical model and further validated by fully quantum mechanical calculations, both in very good agreement with the experiment.
利用阿秒脉冲串产生的极端紫外光，研究了 H(2)的离解单电离。根据电子动能和分子相对于激光偏振轴的取向，我们观察到光电电子和 H(+)离子的相对发射方向出现明显的不对称性。能量相关的不对称模式由半经典模型解释，并通过全量子力学计算进一步验证，两者与实验结果非常吻合。
