The Spectra of Columbium V and Molybdenum VI

M. W. Trawick

doi:10.1103/PhysRev.46.63

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The Spectra of Columbium V and Molybdenum VI

M. W. Trawick

Department of Physics, Cornell University

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Phys. Rev. 46, 63 – Published 1 July, 1934

DOI: https://doi.org/10.1103/PhysRev.46.63

Abstract

The Rb I-like spectra of columbium and molybdenum have been excited in a vacuum spark and photographed with a vacuum spectrograph. Identifications of lines corresponding to the transitions $5 s {}^{2}S - 5 p {}^{2}P$ , $5 p {}^{2}P - 5 d {}^{2}D$ , $5 p {}^{2}P - 6 s {}^{2}S$ , $4 d {}^{2}D - 5 p {}^{2}P$ , and $4 d {}^{2}D - 4 f {}^{2}F$ for Cb V and Mo VI have been facilitated by extrapolation from the corresponding lines in the spectra of the four preceding elements in the Rb I-like isoelectronic sequence. The relative term values $4 d {}^{2}D$ , $5 s {}^{2}S$ , $5 p {}^{2}P$ , $4 f {}^{2}F$ , $5 d {}^{2}D$ , and $6 s {}^{2}S$ have been determined. Absolute term values have been approximately fixed by extrapolating $ν^{\frac{1}{2}}$ for the terms of the sequence in such a way as to maintain the validity of the irregular doublet law and they have been compared with those obtained by applying the Rydberg formula to the ${}^{2}S$ and ${}^{2}D$ terms, and with those found by extrapolating values of the quantum defects for the ${}^{2}S$ and ${}^{2}P$ terms.

References (6)

Fowler, Report on Series in Line Spectra, pp. 103-105, 131, 132 (1922)
Paschen-Götze, Seriengesetze der Linienspektren, pp. 61-63, 89 (1922)
Gibbs and White, Nat. Ac. Sci. Proc. 12, 551 (1926)
Bowen and Millikan, Phys. Rev. 28, 923 (1926)
Kiess and Lang, Bur. Standards J. Research 5, 305 (1930)
Gibbs and White, Phys. Rev. 33, 157 (1929)

[c1] Fowler, Report on Series in Line Spectra, pp. 103-105, 131, 132 (1922)

[c2] Paschen-Götze, Seriengesetze der Linienspektren, pp. 61-63, 89 (1922)

[c3] Gibbs and White, Nat. Ac. Sci. Proc. 12, 551 (1926)

[c4] Bowen and Millikan, Phys. Rev. 28, 923 (1926)

[c5] Kiess and Lang, Bur. Standards J. Research 5, 305 (1930)

[c6] Gibbs and White, Phys. Rev. 33, 157 (1929)

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The Spectra of Columbium V and Molybdenum VI

Abstract

References (6)

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