Abstract

Population trapping via hyperfine ground-state coherences is proposed as a potential source of isotope ratio bias in resonance ionization mass spectra with coherent excitation of the first transition. Sample calculations are presented for a model 4-level Doppler-broadened system and qualitatively verified by experimental fluorescence excitation measurements.

Doppler-free saturation spectroscopy of lutetium isotopes through resonance-ionization mass spectrometry

Bryan L. Fearey, Denise C. Parent, Richard A. Keller, and Charles M. Miller
J. Opt. Soc. Am. B 7(1) 3-8 (1990)

Resonance-ionization mass spectrometry for high-resolution, mass-resolved spectra of rare isotopes

Charles M. Miller, Rolf Engleman, and Richard A. Keller
J. Opt. Soc. Am. B 2(9) 1503-1509 (1985)

Selective isotope determination of lanthanum by diode-laser-initiated resonance-ionization mass spectrometry

J. P. Young and R. W. Shaw
J. Opt. Soc. Am. B 12(8) 1398-1402 (1995)

Isotope selective near-resonant two-photon ionization of ⁴¹Ca isotope via the 4s11s ¹S₀ intermediate state

M. Sankari
Appl. Opt. 47(18) 3289-3298 (2008)

Resonant isotopic depletion spectroscopy

G. R. Janik, B. A. Bushaw, and B. D. Cannon
Opt. Lett. 14(5) 266-268 (1989)