Rotational Analysis of the D²Σ-X²Σ Transition of CaCl

Abstract

The absorption spectrum of gaseous CaCl in the wavelength region 2990-3300 Å has been studied using a King furnace. Ten bands belonging to the D 2 Σ- X 2 Σ transition have been analyzed and both vibrational and rotational constants have been evaluated. The following molecular constants have been determined (cm -1 ): X 2 Σ D 2 Σ T e 0.0 31 110.934(5) ω e 370.201 423.254(7) ω e x e 1.3732 1.581(3) ω e y e 9.3 × 10 -3 1.6(4) × 10 -3 ω e z e -4.8 × 10 -4 -2.9(2) × 10 -4 B e 0.152 233 0.162 975 4(8) α e 7.92 × 10 -4 7.968(2) × 10 -4 D e 1.068 × 10 -7 1.0090(3) × 10 -7 γ e 1.38 × 10 -3 1.2 × 10 -3 The figures in parentheses stand for one standard deviation in the last digit for the computed quantity.