New Band Systems of the YbCl Molecule
The thermal emission spectrum of the YbCl molecule, lying in the 3800-6000 A region, has been photographed for the first time at a reciprocal linear dispersion of 7.3 A/mm. More than 196 violet degraded bands have been recorded on a 2-m plane grating spectrograph in first order and assigned to the vibrational schemes of six systems, viz. A, B1, B2, C1, C2, and D. While the systems A, C1, C2, and D consist of single headed bands, the systems B1 and B2 consist of double headed bands. The vibrational analysis performed suggests that these systems arise from the ground state (2Sigma+) of YbCl molecule. The systems C1-X, C2-X, and D-X have been analyzed for the first time. More precise vibrational constants for the relevant states have been determined. Copyright 1997 Academic Press. Copyright 1997Academic Press
Uttam
KN
Physics Department, Allahabad University, Allahabad, 211002, India
Gopal
R
Joshi
MM