Discrepancies between the Stark-broadening theories of hydrogen and measurements of Lyman-. cap alpha. Stark profiles in a dense equilibrium plasma

Journal Article · Fri Jul 01 04:00:00 EDT 1977 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.16.243· OSTI ID:7097805

Gruetzmacher, K; Wende, B

First observations are presented of the optically thin and reabsorption free-hydrogen resonance line Lyman-..cap alpha.., emitted from a dense equilibrium plasma (n/sub e/ approx. = 10/sup 23/ m/sup -3/, T/sub e/ approx. = 10/sup 4/ K). In the core of the line (wavelength range up to three half-widths) the Stark profiles are determined nearly exclusively by the central Stark component, which is broadened significantly more strongly than predicted by the theories. The experimental Ly-..cap alpha.. Stark widths are larger by a factor of about 2.5 than theoretical ones.

• Research Organization: Physikalisch-Technische Bundesanstalt, Institut Berlin, Abbestrasse 2-12, 1000 Berlin 10, Germany
• OSTI ID: 7097805
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

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74 ATOMIC AND MOLECULAR PHYSICS
CRYOGENIC FLUIDS
ELEMENTS
EQUILIBRIUM PLASMA
FLUIDS
HYDROGEN
LINE BROADENING
LYMAN LINES
NONMETALS
OPTICALLY THIN PLASMA
PLASMA
STARK EFFECT