ANALYSIS OF THE BOUND-FREE EMISSION-SPECTRA FROM THE E(O-PAIR STATES OF CLF TO OBTAIN POTENTIALS FOR THE ION-PAIR AND REPULSIVE VALENCE STATES() AND F(O+) ION)

The optical-optical double resonance method has been used to excite se lected vibrational levels of the E(0(+)) and f(0(+)) ion-pair states o f ClF. Subsequent bound-free transitions terminating on three repulsiv e valence states, Y((3)Sigma(0+)(-)), B-1(3II(0+)), and C((1)Sigma(0+) (+)), have been analyzed. The-bound-free continua have been modeled to obtain analytical expressions for the three 0+ repulsive potentials a nd to improve the description for the E(0(+)) and f(0(+)) state potent ials. One of the repulsive states is Y((3)Sigma(0+)(-)), which is resp onsible for the predissociation of B((II0+)-I-3). The transition dipol e functions also have been assigned for the bound-free transitions. Th e molecular orbital configurations of the lower states are discussed. Finally, the influence of homogeneous interaction between the E(0(+)) and f(0(+)) states on the bound-free spectra from certain vibrational levels: is discussed. (C) 1998 American Institute of Physics.