15min:

JINGMING LONG, HUASHENG WANG, AGUST KVARAN, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland.

Mass spectra are recorded for one-colour (2 + n) resonance enhanced multiphoton ionization (REMPI) of HX (X = Cl \footnoteAgust Kvaran, Kristjan Matthiasson and Huasheng Wang, " Two-Dimensional (2+n) Resonance Enhanced Multiphoton Ionization of HCl: State Interactions and Photorupture Channels via Low-Energy Triplet Rydberg States ", J. Chem. Phys., \underline\textbf131(4), 044324, (2009)., Br) as a function of resonance excitation energy to obtain two-dimensional REMPI data. Perturbations due to Rydberg to ion-pair state interactions show as line shifts, ion signal intensity variations as well as band width broadenings depending on rotational quantum numbers, J '. The data allow determination of parameters relevant to the nature and strength of state interactions as well as dissociation and ionization processes. Alterations in X⁺ and HX⁺ signal intensities prove to be very useful for spectra assignments.