Jan Olof Ekberg, Jørgen E. Hansen, and Joseph Reader, "Analysis of the Spectrum of Seven-Times-Ionized Molybdenum (Mo viii) and Isoelectronic Comparison of the Spectra Y v—Mo viii," J. Opt. Soc. Am. 62, 1143-1148 (1972)
The spectrum of Mo viii has been observed in a sliding-spark discharge with a 5-m grazing-incidence spectrograph. The analysis has yielded nearly all levels of the 4p44d configuration that can combine with the 4p5 2P ground term. Six of the eight levels of the 4p45s configuration given previously by Charles and by Chaghtai were confirmed. New values were found for the remaining two. The 4s24p44d+4s24p45s+4s4p6 level structure has been theoretically interpreted, with configuration-interaction effects included. The
level was found to have a 21% 4s24p4(1D)4d2S character and the
level a 19% 4s4p6 2S character. The energy parameters determined by a least-squares fit to the observed level values are compared with Hartree–Fock (HF) calculations. The ionization energy is estimated to be 144.0 ± 1.0 eV. Isoelectronic comparisons for the level positions in Y v, Zr vi, Nb vii, and Mo v are given graphically. The ratios of the fitted energy parameters to the HF values are compared for these ions.
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GC—established by Charles, Ref. 1. MC—established by Chaghtai, Ref. 2.
Not observed in present work, level value taken from Charles, Ref. 1.
Table III
Calculated energy level values in cm−1 and percentage compositions for the 4s4p6, 4s24p44d, and 4s24p45s configurations of Mo viii. The 4p44d states are designated by (S1L1)SL notation; the states of 4p45s are denoted by (S1L1J1,j) notion.
The values in parentheses are a measure of the amount of cancellation that has occurred in forming the integral. These numbers are the ratio of the true Rk value to an Rk value calculated using the absolute value of each wave function.
Table V
Isoelectronic comparison of ratios of the fitted to the HF parameter values.
GC—established by Charles, Ref. 1. MC—established by Chaghtai, Ref. 2.
Not observed in present work, level value taken from Charles, Ref. 1.
Table III
Calculated energy level values in cm−1 and percentage compositions for the 4s4p6, 4s24p44d, and 4s24p45s configurations of Mo viii. The 4p44d states are designated by (S1L1)SL notation; the states of 4p45s are denoted by (S1L1J1,j) notion.
The values in parentheses are a measure of the amount of cancellation that has occurred in forming the integral. These numbers are the ratio of the true Rk value to an Rk value calculated using the absolute value of each wave function.
Table V
Isoelectronic comparison of ratios of the fitted to the HF parameter values.
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