Bands of NiH and NiD in the Violet Region of the Spectrum

Spectra of NiH and NiD are taken in absorption and photographed in a large concave grating spectrograph. Bands in the violet region of the spectrum have been analysed. They belong to a 2?-2? transition. ?5/2-?5/2 sub-bands as well as ?3/2-?3/2 sub-bands are investigated for both molecules, and for NiH also a ?3/2-?3/2 band. For the 0-0 bands the following constants are derived: NiH NiD State T0(cm-1) B(cm-1) State T0(cm-1) B(cm-1) 2?3/2, v? = 0 24081 6.316 2?3/2, v? = 0 24152 3.271 2?5/2, v? = 0 23761 6.150 2?5/2, v? = 0 23831 3.239 x 2?3/2, v'' = 0 980 7.784 x 2?3/2, v'' = 0 980 3.998 x 2?5/2, v'' = 0 0 7.699 x 2?5/2, v'' = 0 0 3.995