Comparative study of photoionization of atomic hydrogen by solving the one-and three-dimensional time-dependent Schr(o)dinger equations

• 作者: Shun Wang Shahab Ullah Khan Xiao-Qing Tian Hui-Bin Sun Wei-Chao Jiang
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: ATOMIC AND MOLECULAR PHYSICS
• 页码范围: 369-379
• 页数: 11页
• 语种: 英文
• DOI: 10.1088/1674-1056/abea85

摘要

We develop a numerical scheme for solving the one-dimensional (1D) time-dependent Schr(o)dinger equation (TDSE),and use it to study the strong-field photoionization of the atomic hydrogen.The photoelectron energy spectra obtained for pulses ranging from XUV to near infrared are compared in detail to the spectra calculated with our well-developed code for accurately solving the three-dimensional (3D) TDSE.For XUV pulses,our discussions cover intensities at which the ionization is in the perturbative and nonperturbative regimes.For pulses of 400 nm or longer wavelengths,we distinguish the multiphoton and tunneling regimes.Similarities and discrepancies between the 1D and 3D calculations in each regime are discussed.The observed discrepancies mainly originate from the differences in the transition matrix elements and the energy level structures created in the 1D and 3D calculations.