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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 7, Iss. 9 — Sep. 1, 1990
  • pp: 1761–1771

Completing the iron period: double-resonance, fluorescence-dip Rydberg spectroscopy and ionization potentials of titanium, vanadium, iron, cobalt, and nickel

Ralph H. Page and Christopher S. Gudeman  »View Author Affiliations


JOSA B, Vol. 7, Issue 9, pp. 1761-1771 (1990)
http://dx.doi.org/10.1364/JOSAB.7.001761


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Abstract

We have used the fluorescence-dip technique to obtain double-resonance spectra of transition-metal atoms produced in a rf glow-discharge sputtering machine. Rydberg spectra of the neutral elements Ti, V, Fe, Co, and Ni have been analyzed to yield ionization potentials accurate to 1 cm−1, completing the table of values for the iron period (K through Zn). The 63 737-cm−1 value obtained for Fe agrees with a recently reported result, and new ionization potentials for Ti, V, Co, and Ni are 55 073, 54 413, 63 565 and 61 619 cm−1, respectively. Quantum defects for nd and ns series were obtained. Series converging to some excited ion core levels do not show detectable sd mixing, which would provide a direct ionization channel and lead to the asymmetric line shapes that are characteristic of autoionization. Fano q parameters were determined for states autoionizing without a change in core configuration. Resolved spectra of low-lying Rydberg states display a complicated level structure not observed in studies of alkali or rare-gas atoms.

© 1990 Optical Society of America

History
Original Manuscript: August 24, 1989
Manuscript Accepted: February 12, 1990
Published: September 1, 1990

Citation
Ralph H. Page and Christopher S. Gudeman, "Completing the iron period: double-resonance, fluorescence-dip Rydberg spectroscopy and ionization potentials of titanium, vanadium, iron, cobalt, and nickel," J. Opt. Soc. Am. B 7, 1761-1771 (1990)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-7-9-1761

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