Absorption line narrowing measurements of hyperfine structure in highly excited levels of yttrium

McLean, R. J.; Hannaford, P.; Bachor, H. A.; Fisk, P. T.H.; Sandeman, R. J.

Cultural advice

The Australian National University acknowledges, celebrates and pays our respects to the Ngunnawal and Ngambri people of the Canberra region and to all First Nations Australians on whose traditional lands we meet and work, and whose cultures are among the oldest continuing cultures in human history.

Aboriginal and Torres Strait Islander peoples are advised that ANU Library collections may include images, names, voices, and other representations of deceased persons.

Material in the collection may contain terms, language or views that reflect the period in which the item was created and may be considered inappropriate today.

Absorption line narrowing measurements of hyperfine structure in highly excited levels of yttrium

Date

1986

Authors

Abstract

Absorption line narrowing techniques have been used to make original measurements of hyperfine structure in twelve highly excited levels of atomic yttrium. The yttrium vapour, produced by cathodic sputtering in a low pressure, rare-gas discharge, was excited by stepwise excitation with two narrow-band cw lasers. Doppler-free signals have been recorded using both fluorescence and optogalvanic detection. Resonances as narrow as 6 MHz FWHM have been observed in the discharge.