Photoionization dynamics and cation spectroscopy with coherent VUV radiation

Conference · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:10155472

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: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10155472
• Report Number(s): BNL--47617; CONF-920574--5; ON: DE92015841; CNN: Grant: CHE-8920555
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
664200
74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
FAR ULTRAVIOLET RADIATION
HYDROGEN SULFIDES
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
POLYATOMIC MOLECULES
PULSE TECHNIQUES
ROTATIONAL STATES
SPECTRA OF ATOMS AND MOLECULES AND THEIR INTERACTIONS WITH PHOTONS
THRESHOLD ENERGY
WATER