Transition properties such as transition energies, oscillator strengths, transition probabilities, and quantum defect values have been reported for the interconfiguration forbidden transitions 3p6:1Se → 3p5(2P)np:1De (n = 4, 5, 6, 7) and 3p6:1Se → 3p5(2P)nf:1De (n = 4, 5, 6, 7) for the first few members of Ar isoelectronic sequence from Ar to Cr6+. The linearized version of time-dependent coupled Hartree-Fock (TDCHF) theory has been applied to calculate such transition properties. These data are very useful in identifying the solar spectral lines in the ultraviolet region. Most of the data for oscillator strengths, transition probabilities, and quantum defect values from K+ onward are new. Transition energies agree well with the existing experimental results wherever available.
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