Molecular photoelectron momentum and angular distributions of N2 molecules by ultrashort attosecond laser pulses

• 作者: Si-Qi Zhang Qi Zhen Zhi-Jie Yang Jun Zhang Ai-Hua Liu Kai-Jun Yuan Xue-Shen Liu Jing Guo
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: ATOMIC AND MOLECULAR PHYSICS
• 页码范围: 243-248
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/abca22

摘要

The ultrafast photoionization dynamics of N2 molecules by x-ray/XUV laser pulses is investigated.The molecu-lar frame photoelectron momentum distributions(MF-PMDs)and the molecular frame photoelectron angular distributions(MF-PADs)are obtained by numerically solving 2D time-dependent Schrodinger equations within the single-electron ap-proximation(SEA)frame.The results show that the molecular photoionization diffraction appears in 5 nm laser fields.However,when the laser wavelength is 30 nm,the molecular photoionization diffraction disappears and the MF-PMDs show four-lobe pattern.The ultrafast photoionization model can be employed to describe the MF-PMDs and MF-PADs of N2 molecules.