Partial cross sections for the photodetachment of metastable He sup minus

Journal Article · Sun Jan 14 23:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.278· OSTI ID:6955688

Pegg, D J; Thompson, J S; Dellwo, J ^[1]; Compton, R N; Alton, G D ^[2]

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1. Department of Physics, University of Tennessee, Knoxville, Tennessee 37996 (USA)
2. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (USA)

Partial cross sections for the photodetachment of a 2{ital s} or 2{ital p} electron from metastable (1{ital s}2{ital s}2{ital p}){sup 4}P He{sup {minus}} ions have been determined using crossed-beam photoelectron spectroscopy. Kinematic effects associated with detachment from a fast beam source have been exploited, in a novel way, to enhance the precision of the measurements. Calculated cross sections for the photodetachment of H{sup {minus}} were used to establish a scale for the He{sup {minus}} measurements. Radiative attachment cross sections from the photodetachment results using the principle of detailed balance.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6955688
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:3; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ASYMMETRY COEFFICIENTS
BEAMS
CHARGED PARTICLES
COLLIDING BEAMS
CROSS SECTIONS
DATA
ELECTRON SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HELIUM IONS
INFORMATION
IONIZATION
IONS
METASTABLE STATES
NUMERICAL DATA
P STATES
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RESOLUTION
S STATES
SPATIAL RESOLUTION
SPECTRAL SHIFT
SPECTROSCOPY