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X‐ray emission via Kα resonance complexes in gold ions
Author(s) -
Stancalie Viorica,
Iorga Cristian
Publication year - 2019
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.3043
Subject(s) - atomic physics , excitation , ion , hamiltonian (control theory) , physics , dipole , electron ionization , collision , resonance (particle physics) , electron , relativistic quantum chemistry , ground state , shape resonance , ionization , nuclear physics , quantum mechanics , mathematical optimization , mathematics , computer security , computer science
The excitation energies from ground state for 63 fine structure levels of the terms belonging to 1 s 2 , 1s nl , 2 lnl′ ( n = 2,3), 3 l 3 l′ ( l ≠ ≠ l′ ) configurations of Au 77+ , as well as oscillator strengths for electric‐dipole‐allowed and intercombination transitions among the fine‐structure levels were theoretically evaluated. The important relativistic effects in intermediate coupling are incorporated by means of the Breit–Pauli Hamiltonian. Extensive comparisons are performed with several approximations and previous data sets in order to size up contributing effects and to estimate accuracy ratings. The atomic excitation is obtained by electron impact in close coupling approach. For optically allowed transitions, the electron‐impact collision strengths at collision energy up to 80 keV are reported. The results are relevant to the laboratory and astrophysical plasmas.