In this work,we investigate the molecular-frame photoelectron momentum and angular distributions(MF-PMD and MF-PAD)of H_(2)^(+) in the presence of XUV Attosecond Pulses.We present the alignment-sensitive effect of MF-...In this work,we investigate the molecular-frame photoelectron momentum and angular distributions(MF-PMD and MF-PAD)of H_(2)^(+) in the presence of XUV Attosecond Pulses.We present the alignment-sensitive effect of MF-PMDs and MF-PADs when the laser field polarization and the molecular axis are close to parallel geometry.Our results show that the MF-PADs and MF-PMDs of single-photon ionization of H_(2)^(+) ion vary drastically when the alignment slightly shifts from parallel geometry to a small alignment angle(e.g.4°)between the laser polarization direction and the molecular axis at the equilibrium inter-nuclear distance of R_(c)=2 atomic units.As R_(c) increases to 4 atomic units,such sensitivity is decreased.The R_(c)-dependent transition cross-sections in different channels are found to be the origin of such sensitivity.展开更多
基金supported by the National Key Research and Development Program of China(2022YFE0134200)the National Natural Science Foundation of China under Grant Numbers 12174147,91850114,and 11774131Part of the numerical simulation was done on the high performance computing cluster Tiger@IAMP at Jilin University。
文摘In this work,we investigate the molecular-frame photoelectron momentum and angular distributions(MF-PMD and MF-PAD)of H_(2)^(+) in the presence of XUV Attosecond Pulses.We present the alignment-sensitive effect of MF-PMDs and MF-PADs when the laser field polarization and the molecular axis are close to parallel geometry.Our results show that the MF-PADs and MF-PMDs of single-photon ionization of H_(2)^(+) ion vary drastically when the alignment slightly shifts from parallel geometry to a small alignment angle(e.g.4°)between the laser polarization direction and the molecular axis at the equilibrium inter-nuclear distance of R_(c)=2 atomic units.As R_(c) increases to 4 atomic units,such sensitivity is decreased.The R_(c)-dependent transition cross-sections in different channels are found to be the origin of such sensitivity.
