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Optics Letters

Optics Letters


  • Vol. 11, Iss. 7 — Jul. 1, 1986
  • pp: 422–424

Laser-enhanced electron-impact ionization spectroscopy

B. A. Bushaw, B. D. Cannon, G. K. Gerke, and T. J. Whitaker  »View Author Affiliations

Optics Letters, Vol. 11, Issue 7, pp. 422-424 (1986)

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Sequential photon-excitation, electron-impact ionization with subsequent mass analysis has been applied to a barium atomic beam. High-resolution, Doppler-free laser excitation produces the 6s6p1P1 excited state, which is then ionized by electron bombardment. The excited state is selectively ionized when bombardment energies are between the excited- and ground-state ionization thresholds. Mass discrimination has permitted the recording of individual optical spectra for all the stable isotopes, including the 0.1% abundant 130Ba and 132Ba, in a sample with natural isotopic abundances.

© 1986 Optical Society of America

Original Manuscript: February 7, 1986
Manuscript Accepted: April 23, 1986
Published: July 1, 1986

B. A. Bushaw, B. D. Cannon, G. K. Gerke, and T. J. Whitaker, "Laser-enhanced electron-impact ionization spectroscopy," Opt. Lett. 11, 422-424 (1986)

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