The characteristic or total cross-sections are fundamental limits in physics to understand the matter structure. These limits provide appropriate information on the interplay process probability. They are secondhand in various application in the way that laser physics, healing radiation care and nuclear requests. In the case of atoms or complex molecules photoionization, the analytical judgment of cross section is dull and very complex because we should use poly-electronic wave function. In this case it is troublesome to solve the problem utilizing the Schrodinger's equation. In order to fool these difficulties, we apply mathematical approximations. This item provides a general study of the photoionization by seeing atom assign electromagnetic radiation accompanying photon energy nearly the upper ionization threshold and utilizing also individual active energized matter model. A general and particularized calculation of the differential representative sample as a function of photon polarization in uninterrupted case and the circular case has been acted. Moreover, we made case of an unpolarized wave and deducted the oval-shaped polarization component the keeping in mind that unpolarized light is principally composed by an elliptically reverse wave. Then, a study of the angular classification of the photoelectrons according to the β irregularity parameter was made. A particular use was made on hydrogenoid bit considered as of highest quality-electron method. From this study it appears in the vicinity of the above photoionization threshold, the characteristic cross section decreases accompanying the incident photon strength in the linear and circular polarization cases while it increases in the oval-shaped polarization case. So, In the undeviating polarization case, a suggestion of correction the circular and elliptical case, the maximum photoelectron signal (peak) is acquired witch the ejection photoelectron angle θ = 0 (forwards expulsion electron) or θ = π (backscattering).
Author(s) Details:
Issoufou Arzika Alio,
Climate, Environment and Materials Radiation
Laboratory (LCEMR), Physics Department, Faculty of Sciences and Techniques,
Abdou Moumouni University, Niamey, Niger.
Almoustapha
Aboubacar,
Climate,
Environment and Materials Radiation Laboratory (LCEMR), Physics Department,
Faculty of Sciences and Techniques, Abdou Moumouni University, Niamey, Niger.
Please see the link here: https://stm.bookpi.org/FRAPS-V4/article/view/10590
