Experimental study of excitation of the even 4P and 4D levels of the cobalt atom by electron impact
Keywords:spectral line., energy level, even configuration, excitation cross-section, cobalt atom
The excitation of even quartet levels 4P and 4D of the cobalt atom was experimentally studied by the method of extended crossing beams with registration of the optical signal of excited atoms. The excitation cross sections of 43 CoI spectral lines resulting as spontaneous transitions from even levels 4P and 4D were measured at the exciting electron energy of 50 eV. In the incident electron energy range 0-200 eV optical excitation functions (OEFs) were recorded for transitions from eight levels. The total excitation cross sections for 12 energy levels of cobalt atom are calculated.
C.R. Cowley, T.A. Ryabchikova, F. Kupka, D.J. Bord, G. Mathys, W.P. Bidelman, Abundances in Przybylski’s star. Mon. Not. R. Astron. Soc.. 317, 299 (2000)
T.A. Ryabchikova, I.S. Savanov, A.P. Hatzes, W.W. Weiss, G. Handler, Astron. Abundance analyses of roAp stars VI. 10Aql and HD 122970*. Astron. Astrophys., 357, 981 (2000)
Electronic and atomic collisions / Bibliography 1967–1973 – in Russian, Issue 2, Part 1.
A.N. Kuchenev, Yu.M. Smirnov, Excitation cross-sections of niobium atom. J. Appl. Spectrosc., 36, 136 (1982)
S.N. Bogdanov, A.Yu. Bodylev, A.N. Kuchenev, Yu.M. Smirnov, Excitation cross-sections of molybdenum by electron impact from the atom ground state. J. Appl. Spectrosc., 37, 989 (1982)
Yu.M. Smirnov, Investigation of the atom excitation cross-sections using the method of extended crossing beams. In: Physics of electronic and atomic collisions, Phys.-Techn. Inst. Acad. of Sci. USSR Press, (1985) 183-193.
Yu.M. Smirnov, Excitation of gallium one-charged ion in e–Ga collisions, J. Phys. B: At. Mol. Opt. Phys., 48, 165204 (2015) DOI:10.1088/0953-4075/48/16/165204
Yu.M. Smirnov, Excitation cross-sections in collision of slow electrons with thallium atom. J. Phys. B: At. Mol. Opt. Phys., 49, 175204 (2016) DOI:10.1088/0953-4075/49/17/175204
L.L. Shimon, I.V. Kurta, I.I. Garga, Experimental study of the effective cross-sections of gadolinium atom spectral lines by electron impact. Opt. Spectrosc. – in Russian 56, 601 (1984)
P.A. Kolosov, Yu.M. Smirnov, Measurement of excitation cross-sections for some quartet states of cobalt atom by electron impact. J. Appl. Spectrosc., 39, 880 (1983)
P.A. Kolosov, Yu.M. Smirnov, Excitation cross-sections of the spectral lines of cobalt atom in the 200–600 nm spectral range (excitation of doublet and sextet states). Journal of Applied Spectroscopy – in Russian 40, 1011 (1984)
R.K. Peterkop, Calculation of excitation cross-sections of cobalt atom by electron impact. Latvian SSR Academy of Science News. Series Physical and Technical Sciences – in Russian No1, 3 (1987)
Yu.M. Smirnov, Excitation cross-sections of 4D levels of the cobalt atom by electron impact. Journal of Applied Spectroscopy, 64, 573 (1997)
Yu.M. Smirnov, Excitation cross-sections of 4F levels of the cobalt atom by electron impact. High Temperature, 36, 163 (1998)
J.C. Pickering, A.P. Thorne, The spectrum and term analysis of CoI. Astrophys. J. Suppl. Ser., 107, 761 (1996)
J. Sugar, C. Corliss, Energy levels of Cobalt, CoI through CoXXVII. J. Phys. Chem. Ref. Data, 10, 1097 (1981)
How to Cite
Copyright (c) 2020 Yuriy Smirnov
This work is licensed under a Creative Commons Attribution 4.0 International License.