Measurements of the resonance lines of Li6 and Li7 by Doppler-free frequency-modulation spectroscopy

Craig J. Sansonetti, Bruno Richou, Rolf Engleman, Jr., and Leon J. Radziemski
Phys. Rev. A 52, 2682 – Published 1 October 1995
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Abstract

Using Doppler-free frequency-modulation spectroscopy, we have measured most of the hyperfine components and the centers of gravity of the D1 line of Li7 and the D2 line of Li6. By using previously measured fine- and hyperfine-structure splittings, we have also determined centers of gravity for the D2 line of Li7 and the D1 line of Li6. Our present results are more accurate than previously reported values by a factor of more than 100. The wave numbers are Li7 D2: 14 903.983 468 (14) cm1; Li7 D1: 14 903.648 130 (14) cm1; Li6 D2: 14 903.632 116(18) cm1; Li6 D1: 14 903.296 792 (23) cm1. Values for the isotope shifts of the resonance lines of 0.351 338 (21) cm1 for the D1 line and 0.351 352 (15) cm1 for the D2 line have been derived. All uncertainties represent a 95% level of confidence.

  • Received 10 February 1995

DOI:https://doi.org/10.1103/PhysRevA.52.2682

©1995 American Physical Society

Authors & Affiliations

Craig J. Sansonetti and Bruno Richou

  • Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899

Rolf Engleman, Jr.

  • Chemistry Department, University of New Mexico, Albuquerque, New Mexico 87131

Leon J. Radziemski

  • Physics Department, Washington State University, Pullman, Washington 99164-3520

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Vol. 52, Iss. 4 — October 1995

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