Study For The Stark Effect And Triple-Differential Cross-Section For Electron-Atom Ionization Assisted Fields

Quantum scattering is one of the important means in the study of modernphysics, the internal mechanism through scattering us to study microscopic particlesand composition, its status in modern physics is also increasing, it is because of this,the (e,2e)reaction is paid more and more attention.This paper is in the laser field, with (e,2e)reaction as the basic theory, thesymmetric non coplanar, research on electronic from the process of hydrogen atom.In the course of the study, taking into account the Stark effect of hydrogen atom inthe laser field before under the action of the produce, also is in the external electricfield, the energy splitting of atomic hydrogen, and then interact with the incidentelectron, choosing appropriate initial wave function and the final state wavefunction, application of the Born approximation method, calculate the differentialcross sections from three after, and then through the image’s conclusion. In thewhole computing process, we use some mathematical calculation methods, such asthe confluent the flow generating function, Bessel function, transition matrix underdifferent conditions are calculated, and then calculated the scattering cross section.We selected the incident electron energy is1000e V, the momentum transferis1.5, by using a YAG laser field, namely the frequency was0.043au(atomicunits), the effective charge number1, in the ground state and excited state,were made without considering the Stark effect and considering the TDCS imageof the Stark effect. Through the graph compared to we found, in the ground state,the laser field strength increases, the peak to peak higher " binary ". Fixed laserintensity, the Stark effect of the " binary " peak is better than that withoutconsidering Stark effect " binary " peak height a lot. While the increase in theintensity of laser, we still see considering the effect of " binary " peak than did notconsider the effect of " binary " peak height, but significantly decreased a lot. In theexcited state, changes of laser intensity, the corresponding peak will also change," binary " peak increases very fast, and the " recoil " peak change increase compared to the " binary " peak is relatively small. Influence of Stark effect on the excitedstate of TDCS ratio on the ground state of TDCS more obvious.