Dipole moment functions for electronic transitions from ion-pair states of the second tier of molecular iodine

The emission spectra caused by the transitions from the ion-pair states and f0g+ and G1g of the I2 molecule are obtained by excitation of individual rovibronic levels of the molecule by the method of optical-optical double resonance. The emission spectra from the state F0u+ populated due to collisions I2(f) + I2(X) are also measured. By modeling the experimental emission spectra, the dipole moment functions for the electronic transitions fg+-B0u+, A0u+, and B″0u+; G1g-A0u+ and B″0u+; and F0u+-X0g+ and a′0g+ of the iodine molecule are reconstructed.