Time-energy mapping of photoelectron angular distribution: application to photoionization setereodynamics of nitric oxide
Time-energy mapping of photoelectron angular distribution: application to photoionization setereodynamics of nitric oxide
复制标题
光电子角分布的时间-能量映射：一氧化氮光电离立体动力学的应用
DOI：
10.1039/c2cp40308k
复制
发表时间：
2012
影响因子：
3.3
通讯作者：
and T. Suzuki
中科院分区：
文献类型：
--
作者：
Y. Suzuki;Y. Tang;and T. Suzuki
利用光致电离积分截面和实验室框架光电子角分布的时间-能量图研究了双原子分子的光致电离立体动力学。一般理论形式主义[Y.Suzuki和T.Suzuki，Mol.Phys.，2007,105,1675]，并用高分辨率光电子成像仪测定了NO从A2Σ+态到近阈值和非解离光电离过程中光电子分波的跃迁偶极矩和相移。由此确定的跃迁偶极子和相移与态-态光电离实验和Schwinger变分计算结果符合得很好。与Rydberg态量子缺陷的相移不同表明，除了众所周知的S-d超络合物外，还存在不同的L波的弱杂化。我们的结果还模拟了光电子角分布中的圆二向色性。
The time–energy mapping of the photoionization integral cross section and laboratory-frame photoelectron angular distribution is used to study photoionization stereodynamics of a diatomic molecule. The general theoretical formalism [Y. Suzuki and T. Suzuki, Mol. Phys., 2007, 105, 1675] is simplified for application to a diatomic molecule, and a high-resolution photoelectron imaging apparatus is used to determine the transition dipole moments and phase shifts of photoelectron partial waves in near-threshold and non-dissociative photoionization of NO from the A2Σ+ state. The transition dipoles and phase shifts thus determined are in reasonable agreement with those by state-to-state photoionization experiment and Schwinger variational calculations. The difference of the phase shifts from those expected from the quantum defects of Rydberg states suggests occurrence of weak hybridization of different l-waves, in addition to the well-known s–d super complex. The circular dichroism in photoelectron angular distribution is also simulated from our results.