Rotational analysis of the C¹Π-X¹Σ⁺system of indium monofluoride

Abstract

Indium monofluoride was excited in a high-frequency discharge and the c-x system was photographed at a reciprocal dispersion of 0.3 8, m m -' using a plane-grating spectrograph. Rotational analyses of the 0,O 1,0 2,2 3,3 4,4 2,4 3,5 4,6 and 5,7 bands have been carried out and the following molecular constants have been evaluated. B; = 0.2670( i 3) cmab = 0,0050( k 4 ) cm-' 0; = 3.65($-5)xlO--cm-' 0; = 2 , 5 ( + 3 ) x l O -' c m -' 8, = 0,5(+2)x 10-'cm-' = 0 4 f l ) x iO-'cm-' r: = 1,9672( k 3 ) 8, B: = 0.2628( F 4 ) cm-' x: = 0.0020( +-1) cm-I r: = 1.9853(+2) 8, The ri value agrees with the microwave absorption value 1.9854 8, J . Phys. B: Atom.

Millimeter wave rotational spectra of indium monofluoride

“…The high resolution electronic spectra of InF in the optical region was studied by Barrow et al [1] and Nampoori et al [2]. The microwave spectrum of InF was first investigated by Lovas and T6rring [3].…”