The millimeter wave spectra of NaH and NaD

摘要

Utilizing a glow discharge absorption cell, we have detected thev= 0, 1, 2, and 3,J= 0rarr;1 transitions of NaH and thev= 0, 1, 2, and 3,J= 1rarr;2 andv= 0,J= 2rarr;3 transitions of NaD in the millimeter and submillimeter regions of the spectrum. The derived Dunham constants (MHz) are thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; thinsp; A significant breakdown of the Bornndash;Oppenheimer approximation has been observed.