PFI-ZEKE spectroscopy of the ~2Π spin-orbit components of HBr~+

摘要

The PFI-ZEKE method was applied for examination of the rotational structure of the ~2Π spin-orbit components of HBr~+ (v~+ = 0). Precise absolute values for the position of rotational thresholds were obtained. Additional lines not compatible with ionization thresholds are attributed to slow electrons from autoionizing states attached to neutral molecules and field-ionized by the extraction pulse.