Rotational branching ratios and photoelectron angular distributions in resonance enhanced multiphoton ionization of HBr via the F 1Δ2 Rydberg state

Articles you may be interested in Resonance enhanced multiphoton ionization photoelectron spectroscopy and pulsed field ionization via the F 1Δ2(v'=0) and f 3Δ2(v'=0) Rydberg states of HCl Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of H2O via the C 1 B 1 Rydberg state Rotational branching ratios and photoelectron angular distributions in resonance enhanced multiphoton ionization of diatomic molecules (1+1) resonant enhanced multiphoton ionization via the A 2Σ+ state of NO: Ionic rotational branching ratios and their intensity dependence Results of theoretical studies of rotational ion distributions in the X 2ITI/2 ground state of HBr+ resulting from (2 + 1) resonance enhanced multiphoton ionization (REMPI) via the 8(2) branch of the F la 2 Rydberg state are reported. These results show a strongly parity-favored ion distribution with about 80% population in the (component nt of the A doublet of J + rotational levels. The 20% population in the other parity component of the A doublet can be seen to be due to odd partial wave contributions to the photoelectron matrix elements which arise primarily from non-atomic-like behavior of the electronic continuum. This, in turn, is due to angular momentum coupling in the photoelectron orbital brought about by the torques of the nonspherical molecular ion potential. We demonstrate that the effect of alignment on these ion distributions, although not large, is important. Photoelectron angular distributions and alignment of the J levels of the HBr + ions are also presented. Rotational branching ratios and photoelectron angular distributions resulting from (2 + 1') REMPIof HBr via several S branches of the F la 2 state are also shown for near-threshold photoelectron energies.