Study On Triple Differential Scattering Cross Section Of Electron Ionization Of Excited Hydrogen Atom Under Circularly Polarized Laser Field

Scattering is an important field of investigation in physics.The study of scattering process plays an important role in understanding the structure and motion of micro particles.In the theoretical study,the information in the scattering process is mainly obtained through the triple differential scattering cross section.The process by which electrons collide with atoms is called?e,2e?reaction.The?e,2e?reaction of hydrogen atom is the simplest one in the scattering process.With the rapid development of laser technology,the?e,2e?reaction after adding laser field has been extensively studied,which is of great significance to the research of plasma physics,chemical reaction,nuclear fusion physics and so on.Therefore,the study of laser field?e,2e?reaction is beneficial to the exploration of the microcosm.In this paper,we study the triple differential scattering cross sections of electron ionized excited hydrogen atoms in a circularly polarized laser field.The calculation process is based on Schrodinger equation.The first-order Born approximation,confluent hypergeometric function and Bessel function are also used.In this paper,appropriate wave functions are selected to describe incident electrons,target atoms,scattered electrons and collided electrons.During the research,the specific expression of the triple differential scattering cross section is obtained by calculation.The method of controlling variables is used to change the scattering angle,effective charge number and collision electron energy.The image of triple differential scattering cross section is drawn by Mathematica.In the basis,the research analyzes the influence of various physical quantities on the triple differential scattering cross section under laser field.The two-dimensional image shows that when the target atom is in a?₂₀₀state,the change of the binary peak decreases with the increase of the scattering angle,collision electron energy and effective charge number,and the position of the peak shifts.When the target atom is in a?₂₁₀state,the binary peaks are split considering the Stark correction.The splitting peaks are inhibited and the peaks are significantly reduced with the increase of the scattering angle,electron energy and effective charge number.The position of the peaks also changed obviously.