Abstract

The hyperfine structure of 22 states of niobium is studied by Doppler-limited laser optogalvanic spectroscopy. The sample was prepared by a sputtering technique employing a niobium–neon hollow-cathode lamp. A frequency-stabilized single-frequency ring dye laser was used for excitation, and optogalvanic spectroscopy techniques were used for detection. From the recorded well-resolved hyperfine spectra the magnetic dipole and electric quadrupole coupling constants are evaluated. The hyperfine coupling constants for 13 states belonging to the configurations 4d⁴5s, 4d⁴5p, and 4d³5s5p are being reported for the first time to our knowledge. The values obtained are compared with previous data when available.

© 1992 Optical Society of America

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