S. P. Bagare

Dissociation energy for the ground state of AlO from true potential energy curve

Abstract The true potential energy curve for the ground state of AlO has been extended up to the observed vibrational levels v = 22 using revised vibrational constants. The dissociation energy for the ground state of AlO has been estimated to be 4.15 ± 0.05 eV by the method of curve fitting. The Lippincott potential function has been used for fitting with the RKRV curve.

Intensity measurements and relative band strengths of the fluorescent bands of the (B-X) system of I2

Relative integrated intensities of a few bands in the vibrational structure of the B-X fluorescent system of molecular iodine have been measured by the technique of photographic photometry. Reliable values of Franck-Condon factors and r-centroids given recently by Tellinghuisen have been employed to evaluate the variation of electronic transition moment with internuclear separation. The variation is found to be Re(r) = const.(1−0.6930r + 0.1201r2) in the range 2.76 < r < 2.81 A. Smoothed arrays of band strengths are presented for the bands. The effective vibrational temperature of the source is found to be 340 ± 55 K.

Relative band strengths from the study of intensity distribution in the A-X system of CrO

Relative integrated intensities are measured for ten bands in the vibrational structure of the astrophysically significant A5π−X5π system of CrO by the technique of photographic photometry. Vibrational transition probabilities are computed using the revised molecular constants of the electronic states. Using these results, the variation of electronic transition moment with the internuclear separation is found to be Re(r) = const. × (1−0.398r) in the range 1.60 A < r < 1.72 A. A smoothed array of band strengths is presented.

Intensity measurements and relative band strengths for the B-X I2 systems—II

The vibrational intensity distribution has been measured for the bands (26,0), (27,0)…(44,0) of the B-X system of molecular iodine. A suitable value for the effective vibrational temperature of the source has been adopted to evaluate the population distribution in excited vibrational levels. The empirical variation of the electronic transition moment with internuclear separation is found to be Re(r) = const x(1 - 0.7707r + 0.1483r2) in the range 2.65 < r, A < 2.70. A smoothed array of band strengths is presented.