ANALYSIS AND DEPERTURBATION OF THE $A^{2}\Pi$ and $B^{2}\Sigma^{+}$ STATES OF CaF

Abstract

A laser excitation spectrum of the (0, 0) and (1, 1) bands of CaF $A^{2}\Pi-X^{4}\Sigma^{+}$ system has been recorded. The present set of molecular constants for both $A^{2}\Pi$ and $B^{2}\Sigma^{+}$ states represent a vast improvement in precision over previously reported $values^{h}$ because of larger number of lines position measurements and the use of a more reasonable effective Hamiltonian model which accounts explicitly for the {A - B} interaction via off-diagonal matrix elements. Accurate spectroscopic parameters for the {X, A}, and {B} states will be presented.