Abstract

High-resolution Doppler-limited laser optogalvanic spectroscopic experiments were conducted in a La–Ne hollow-cathode discharge to study the hyperfine structure of some of the allowed transitions of neutral 139La. The magnetic-dipole coupling constants (A) for 21 levels were calculated. The A constants for the levels x4D3/2,z4S3/2,x4D7/2,u2F5/2 are being reported, we believe, for the first time.

© 1989 Optical Society of America

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