Synthetic Swan band profile of (1,0) of (C-12)(C-12) and (0,0) of (C-12)(C-12) and (C-12)(C-13) in comets

Abstract

The statistical equilibrium calculations of the ¹²C¹³C molecule based on the resonance fluorescence process give similar results to those of the normal molecule. Therefore the assumption that the observed intensities of bands of the normal and the isotopic molecule differ only by their abundance ratio is reasonable. The synthetic profile of the (1,0) Swan band of ¹²C¹³C, (0,0) band of ¹²C¹²C and ¹²C¹³C have been calculated. The relative merits of using the rotational structure of the (1,0) or (0,0) band for the determination of the isotopic ratio ¹²C/¹³C is discussed briefly.