[ital p]-wave photodetachment in a static electric field

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.310· OSTI ID:6381335

Gibson, N D; Davies, B J; Larson, D J ^[1]

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1. Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)

Photodetachment from negative ions initially bound in [ital s] states has been studied in a static electric field. A 10-keV ion beam was sent through a region with fields of up to 1.5 kV/cm applied parallel to the beam direction. A pulsed dye-laser beam, perpendicular to the ion beam, photodetached the ions. The relative cross sections were measured by detecting the resulting fast neutral atoms with a gated channeltron detector. Polarization-dependent electric-field oscillations were oberved on the [ital p]-wave detachment cross section of Au[sup [minus]] near the threshold at 18 620.2 cm[sup [minus]1]. A simple theory for calculating the oscillatory structure is presented. Good agreement is found between the data and the theory, for laser polarizations both parallel to and perpendicular to the static electric field.

• OSTI ID: 6381335
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:1; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
CHARGED PARTICLES
CROSS SECTIONS
DC SYSTEMS
DYE LASERS
ELECTRIC FIELDS
ELECTRON DETACHMENT
ENERGY
ENERGY LEVELS
GOLD IONS
IONIZATION
IONS
LASERS
LIQUID LASERS
OSCILLATIONS
P WAVES
PARTIAL WAVES
PHOTOIONIZATION
POLARIZATION
POWER SYSTEMS
PULSES
S STATES
THRESHOLD ENERGY