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Study For The Triple-Differential Cross-section For Ion-Atom Ionization Assisted Of Laser Fields

Posted on:2013-06-04Degree:MasterType:Thesis
Country:ChinaCandidate:Y YuFull Text:PDF
GTID:2230330395952207Subject:Atomic and molecular physics
Abstract/Summary:PDF Full Text Request
Scattering is in the modern physics to reveal the physical phenomena. Amongthem, the hydrogen atoms (e,2e) reaction is the most simple scattering problem. Inrecent years, with laser technology and other related discipline development, laserfield to (e,2e) process the major effect of the growing role revealed, therefore, thescattering of atomic particles in the laser field about the hydrogen atom (e,2e)reaction is a new topic. This scattering process whether in theory or in practice has apositive meaning, therefore, developed a including laser field effect, the scatteringtheory method is extremely important.This paper makes a study of the weak laser field in the ions and the hydrogenatoms from the triple differential scattering section, the selection of asymmetricalcoplanar geometric conditions. Through the theory for the hydrogen atoms in theground state respectively and excited states, in laser field of triple-differentialscattering section and no laser field conditions triple-differential scattering section.With computer numerical simulation draw the corresponding image, through theobservation of comparative analysis of the existence of weak laser field of singlefrom the base of the triple H atoms scattering the influence of differential crosssection.From the numerical results of image and observation we can see that hydrogenatoms in the ground state with laser field more hours,‘binary’ peak slightly lowerthan no laser field, the position of the peak slightly move, along with the increase oflaser field, the strength of the ‘binary’ peak increased, more than no laser field ofheight,when the peak of the mobile increasingly large. The strength of the ‘recoil’peak increases gradually, and the peak value of mobile to increase gradually. At thesame time change incidence angles and incident energy, a shoot energy, can createtriple differential-cross section of the scattering changes. In excited states,‘binary’summit splits into two, change the value of the various parameters, also can totriple-differential scattering section the influence.
Keywords/Search Tags:Laser field, triply differential cross sections, scattering, ionization
PDF Full Text Request
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