Ion rotational distributions at near-threshold photoelectron energies

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281597

McKoy, V

Rotationally resolved photoelectron spectra can provide much insight into the underlying dynamics of molecular photoionization, one of the simplest of molecular fragmentation processes. With the recent development of zero-kinetic-energy (ZEKE) photoelectron spectroscopy based on pulsed-field ionization of very high Rydberg states, it is now possible to exploit the narrow bandwidth of laser radiation to achieve sub-wave-number resolution in ion rovibronic state distributions. The unprecedented resolution of this technique has led to a surge of experimental activity in molecular photoelectron spectroscopy. In this talk I will discuss results of our recent studies of such rotationally resolved photoelectron spectra at very-near threshold energies for single-photon ionization of the ground states of NO, CO, H{sub 2}O, H{sub 2}S, CH{sub 3}, and H{sub 2}CO by coherent radiation. The agreement between the calculated and measured photoelectron spectra is generally very encouraging. These studies will serve to highlight the rich dynamics of quantum-state specific studies of molecular photoionization and, where possible, provide a robust description of key spectral features of interest in related experimental studies.

• OSTI ID: 281597
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
MOLECULES
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON-MOLECULE COLLISIONS
RYDBERG STATES