Photoionization dynamics and cation spectroscopy with coherent VUV radiation

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5105255

Wiedmann, R T; Tonkyn, R G; White, M G ^[1]; Grant, E R ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Purdue Univ., Lafayette, IN (United States). Dept. of Chemistry

Pulsed field ionization (PFI) has been used in conjunction with coherent VUV radiation to investigate the rotational state distributions of molecular cations following single photon ionization. For photoionization of the H{sub 2}X (X = O,S) molecules, transitions between asymmetric top levels involving the rotational angular momentum projections, K{sub a} and K{sub c}, permit resolution of the photoelectron continua according to symmetry. The observed spectra also clearly demonstrate the importance of the non-spherical nature of the molecular ion potential which leads to photoelectron final states which are unexpected from atomic-like analogies.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: DOE; NSF; USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5105255
• Report Number(s): BNL-47617; CONF-920574--5; ON: DE92015841; CNN: CHE-8920555
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY
ENERGY LEVELS
EXCITED STATES
FAR ULTRAVIOLET RADIATION
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IONIZATION
IONS
MOLECULES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
POLYATOMIC MOLECULES
PULSE TECHNIQUES
RADIATIONS
ROTATIONAL STATES
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
THRESHOLD ENERGY
ULTRAVIOLET RADIATION
WATER