No abstract

The technique of resonantly enhanced multiphoton ionization with time-of-flight mass resolution has been used to measure the two-photon absorption spectrum of HBr. We have analyzed 37 bands and assigned them to transitions to the valence, ion-pair state and to Rydberg states belonging to the sσ, pσ, dσ, pπ, dπ, and dδ manifolds. Our results are in excellent agreement with the earlier work of Ginter, Ginter, and Tilford. In addition, we have analyzed twelve new electronic states as well as numerous bands of vibrationally excited levels of previously known electronic states. Strong mixing was observed among the 0+ states.

New singlet Rydberg states of the NH(ND) radical in the energy range 92000-100000 cm−1 characterized by resonance enhanced multiphoton ionizationphotoelectron spectroscopyThe two-photon spectra of HCl and DCl were studied using the technique of resonantly enhanced multiphoton ionization. Rovibrational bands were observed for the X 11; + __ V 11; + , E 11; +, F I a 2 , d 30 1 ,/3 a 2 , and g 31; -transitions. The results are compared with the single photon spectra of Ginter, Douglas, and co-workers and with the molecular orbital calculations of Bettendorf et al.