Dynamic processes and polarizability of sodium atom in Debye plasmas
Dynamic processes and polarizability of sodium atom in Debye plasmas
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DOI：
10.1063/1.4867060
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发表时间：
2014-03
影响因子：
2.2
通讯作者：
Y. Qi;L. Ning
中科院分区：
文献类型：
--
作者：
Y. Qi;L. Ning
Dynamic processes including excitation and ionization, and spectrum parameters including the oscillator strengths, dipole polarizabilities from the orbital 3s,3p of sodium atom embedded in weakly coupled plasma are investigated in the entire energy range of a non-relativistic regime. The interaction between the valence electron and the atomic core is simulated by a model potential, and the plasma screening of the Coulomb interaction between charged particles is described by the Debye-Huckel model. The screening of Coulomb interactions reduces the number of bound states, decreases their binding energies, broadens their radial distribution of electron wave functions, and significantly changes the continuum wave functions including the amplitudes and phase-shift. These changes strongly affect the dipole matrix elements between the bound-bound and bound-continuum states, and even the oscillator strengths, the photo-ionization cross sections and the dipole polarizabilities. The plasma screening effect changes ...
