INFRARED-EMISSION SPECTRA OF INH AND IND

High-resolution infrared emission spectra of diatomic indium hydride a nd deuteride were recorded with a Fourier transform spectrometer. A to tal of 377 InH lines from the (1, 0) to (5, 4) bands and 257 InD lines from the (1,0) to (4, 3) bands were measured. Revised sets of isotopi cally dependent Dunham Y constants and isotopically invariant Dunham U constants for the X(1) Sigma(+) ground state were determined. In addi tion, a parametrized internuclear potential for the X(1) Sigma(+) stat e was also obtained from a direct fit of the data to the eigenvalues o f the radial Schrodinger equation. (C) 1995 Academic Press, Inc.