Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of H sub 2 O via the C sup 1 B sub 1 Rydberg state

Journal Article · Tue Sep 15 04:00:00 EDT 1992 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.462929· OSTI ID:7011510

Lee, M; Wang, K; McKoy, V ^[1]; Machado, L E ^[2]

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1. Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125 (United States)
2. Departamento de Fisica, Universidade Federal de Sao Carlos, Caixa Postal 676, 13560 Sao Paulo (Brazil)

In this paper, we extend a previous formulation of molecular resonance enhanced multiphoton ionization (REMPI) photoelectron spectra of diatomic molecules to treat rotationally resolved photoionization of nonlinear polyatomic molecules. Useful parity selection rules, which govern changes of angular momenta {Delta}{ital K}{sub {ital a}} and {Delta}{ital K}{sub {ital c}}, are also derived. As an example, we use this formulation to study rotational branching ratios and photoelectron angular distributions resulting from (3+1{prime}) REMPI of H{sub 2}O via the {ital C} {sup 1}{ital B}{sub 1} (3{ital pa}{sub 1}) Rydberg state. Cooper minima are predicted to occur in the {ital d} wave ({ital l}=2) of the {ital ka}{sub 1} ({lambda}=0) and {ital kb}{sub 1} ({lambda}=1) photoelectron continua. The effects of these Cooper minima on rotationally resolved photoelectron spectra are also investigated.

• OSTI ID: 7011510
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 97:6; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
DISTRIBUTION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
HYDROGEN COMPOUNDS
IONIZATION
MOLECULES
MULTI-PHOTON PROCESSES
NONLINEAR PROBLEMS
OXYGEN COMPOUNDS
PARITY
PARTICLE PROPERTIES
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
POLYATOMIC MOLECULES
RESOLUTION
RESONANCE ABSORPTION
ROTATIONAL STATES
RYDBERG STATES
SELECTION RULES
SORPTION
SPECTROSCOPY
WATER