论文标题
使用高谐波产生的9.3 eV光子的角度分辨非共振两光子单电离对氩气电离
Angle-resolved non-resonant two-photon single ionization of argon using 9.3 eV photons produced via high harmonic generation
论文作者
论文摘要
我们介绍了一项关于中性氩原子的非共振单色两光子单价电离的光离子动力学的实验研究。使用通过高谐波产生和3-D动量成像光谱仪产生的9.3 eV光子，我们检测到来自非共振剂两光子电离产生的光电子和离子。 $ 3P $轨道的光电离是具有$ p $和$ f $ part的波波组件的光电子散射波函数，这会干扰并导致光电子角分布与垂直于vuv偏振的峰值振幅。本结果与前两组理论计算之间的比较[Pan，C。＆Starace，A。F.（1991）。 $ \ textit {物理评论$ \ textit {物理学杂志：原子和分子物理学} $，16（15），2737。
We present an experimental study on the photoionization dynamics of non-resonant one-color two-photon single valence ionization of neutral argon atoms. Using 9.3 eV photons produced via high harmonic generation and a 3-D momentum imaging spectrometer, we detect the photoelectrons and ions produced from non-resonant two-photon ionization in coincidence. Photoionization from the $3p$ orbital produces a photoelectron scattering wave function with $p$ and $f$ partial wave components, which interfere and result in a photoelectron angular distribution with peak amplitude perpendicular to the VUV polarization. The comparison between the present results and two previous sets of theoretical calculations [Pan, C. & Starace, A. F. (1991). $\textit{Physical Review A}$, 44(1), 324., and Moccia, R., Rahman, N. K., & Rizzo, A. (1983). $\textit{Journal of Physics B: Atomic and Molecular Physics}$, 16(15), 2737.] indicates that electron-electron correlation contributes appreciably to the two-photon ionization dynamics.
