Study For The Triple-Differential Cross-section For Electron-atom Ionization Assisted Of Laser Fields E

Quantum scattering as a branch of modern physics, for us to explore the internalstructure of particle has an immeasurable role. The whole discipline basic theory isdeep, the experiment method is flexible, scope of it has extended to every corner oflife. It plays an important role in various fields. As the theoretical basis of manysubjects. And under the condition of laser assisted, electronics and atomic ionizationproblem get more attention of people. Ionization laser field is on the basis of theoriginal collision, join the laser field. The frequency of the is low. And the strength ofthe laser field is far less than coulomb field of target particles. We use the controlvariable method, study the effects of some physical quantities to the image, eachtriple differential scattering cross section is different.On the basis of the above research，in coplanar geometry conditions, the electronand hydrogen atoms collision reaction occurred under weak laser field, we take intoaccount the Stark effect to write the initial and final state wave function, The Starkeffect is the atomic or molecular internal energy levels split under the influence of anapplied electric field.Target particles will ionization.Then corresponds to the initialstate wave function will change. The initial state wave function of ionization indifferent proportions, the image will change. In the actual process of computing, wewill use the Bessel function, and flow generating function and other formulas, elect tocalculate the transition matrix elements in a variety of circumstances, and find thedifferential scattering cross section. Plotted using software. Control variable methodto analyze the impact of various physical quantities on the cross-section.From triple differential scattering cross section of the case,we find that binarypeak in laser field is higher than the binary peak in free field. Two peaks rise. butrecoil peak changed little, And the location move little. Binary peak appears split,with the enhancement of the laser field, the laser field split the more peak. The mixwave function that to be superimposed with the different proportions of case, the caseconsist of Ionization wave function and the wave function of the laser field follow the principle of normalization, we write formation of a mixed state. It shows that themixed state plays an important role for the quantum scattering of research.