Electron collision shift of the Lyman-. alpha. line of ionized helium

Journal Article · Fri Jun 15 04:00:00 EDT 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.41.6928· OSTI ID:6687637

Blaha, M ^[1]; Davis, J ^[2]

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1. Laboratory for Plasma Research, University of Maryland, College Park, MD (USA)
2. Radiation Hydrodynamics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, DC (USA)

The electron collision shift of the He{sup +} Lyman-{alpha} line emitted from a low-density plasma has been calculated in the distorted-wave approximation with the inclusion of second-order corrections to the diagonal elements of the scattering matrix. The effects of exchange, inelastic collisions, interference term, and second-order contributions to the line shift are compared. The present results are also compared with the semiclassical calculations, the Coulomb-Born approximation, the results based on the {ital R}-matrix method, and the line shifts derived from the electrostatic interaction of the radiator with the surrounding plasma.

• OSTI ID: 6687637
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 41:12; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
EMISSION SPECTRA
HELIUM IONS
IONS
LYMAN LINES
PLASMA
SPECTRA
SPECTRAL SHIFT