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Helium Magnesium Ions, The Beryllium-like Ion Energy Level Structure And Spectral Transitions Theoretical Research

Posted on:2002-12-09Degree:MasterType:Thesis
Country:ChinaCandidate:T L YangFull Text:PDF
GTID:2190360032457336Subject:Atomic and molecular physics
Abstract/Summary:PDF Full Text Request
In this paper, the forbidden transition data of excited states for Like-Be ions (Z=5-92), the energy structure of Like-He Mg10"1", AL11+and the ionization energy of metal Magnesium have been calculated systematically by the fully relativistic multiconfiguration Dirac-Fock method. This consist of six chapters, which in chapter 1 we have introduced simply the progress of and main theoretical method of highly ionized ions in theoretical and experimental, in chapter 2-3,the fundamental theoretical method are generalized, in chapter 4, We study systematically the energy structure for Mg10+and AL11+, the spectra transition data of electric dipole about the two -ions and ionization energy of metal Magnesium, the energy intervals, Einstein coefficients and weighted oscillator strengths of magnetic dipole (Mi) (Is22pld\-(ls22p3d)0, (\s22p4d\-(\s22p3d)0 have been systematically studied in chapter 5.In addition,We have analyzed the feasibility of producing X-ray laser between (Is22p3d)i and (1s22p3d)0 .between (Is22p4d\ and (Is22p3rf)0 .The last one have drawed conclusion about the above works.The highly ionized atoms spectroscopy are the basis of studying atomic structure, physic procedure of high temperature plasma and plasma diagnosis technology . These are on the theoretical front and the data are the inevitable basis data in ICF and MCF.The spectra data about low Z and middle Z ions are complete, but those of highly Z elements and heavy ions are rare. Based on multiconfiguration Dirac-Fock approach with breit and QED correction the energy separation and spectra data such as spontaneous transition probability and weightedIVoscillator strength of magnetic dipole for isoelectronic sequence Be. The results indicated that (1) relativistic effect, breit and QED correction have made partial energy order changed. These can not be ignored in treating highly stripped ions. (2) Because the electronic correction has effected on the calculation results, the data about ionization energy of Mg including the electronic correction are more agreement with the experimental result. (3) The transition data of EI for Like-He Mg10+ indicated that the spectra lines are intensive. To a certain , as the qutatum number increse the transition probability and oscillator strength decrease. In addition, it is possible for transition that satisfies the JJ rule but LS rule. (4) We first obtain the spectra transition data of magnetic dipole (Mi) (ls22/>3
Keywords/Search Tags:Highly ionized state, Like-He ions, Like-Be ions, Electronic dipole (E1), Magnetic dipole (M1), spontaneous transition coefficient, Energy intervals, Weighted oscillator strength
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