Spectroscopic study of theta discharges in hydrogen and helium
Thesis/Dissertation
·
OSTI ID:5264248
A well-diagnosed theta discharge was investigated using a variety of spectroscopic techniques. In helium, a method for measuring high frequency plasma turbulence was demonstrated. The method consisted of using a tunable dye laser to resonantly enhance satellite features in the emission spectrum of neutral helium caused by electron plasma waves. The position and strength of the satellites determined the frequency and amplitude of the waves. In a nonturbulent Hydrogen plasma, the ion-dynamical contributions to the broadening of H/sub ..beta../ and H/sub Gamma/ were measured. The profile of H/sub Gamma/ was found to be well predicted by standard Stark broadening calculations with no additional effects due to ion-dynamical corrections. H/sub ..beta../ was found to show clear evidence of additional ion-dynamical broadening, with the additional broadening in rough agreement with predictions originally developed for hydrogenic Lyman series lines.
- Research Organization:
- Maryland Univ., College Park (USA)
- OSTI ID:
- 5264248
- Country of Publication:
- United States
- Language:
- English
Similar Records
Broadening of Lyman lines of hydrogen and hydrogenic ions by low-frequency fields in dense plasmas
Study of low-frequency electric fields in a plasma from the Stark broadening of the hydrogen spectral lines
X-ray line broadening as a diagnostic in laser produced plasma. Final technical report, 4 August 1982-3 August 1983
Journal Article
·
Wed Jun 01 00:00:00 EDT 1983
· Phys. Rev. A; (United States)
·
OSTI ID:6119026
Study of low-frequency electric fields in a plasma from the Stark broadening of the hydrogen spectral lines
Journal Article
·
Mon Oct 01 00:00:00 EDT 1984
· Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)
·
OSTI ID:5545290
X-ray line broadening as a diagnostic in laser produced plasma. Final technical report, 4 August 1982-3 August 1983
Technical Report
·
Fri Jun 01 00:00:00 EDT 1984
·
OSTI ID:6171443
Related Subjects
640420* -- Fluid Physics-- Properties & Structure of Fluids-- (-1987)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BALMER LINES
ELECTRIC DISCHARGES
ELEMENTS
EMISSION SPECTRA
FLUIDS
GASES
HELIUM
HYDROGEN
LINE BROADENING
NONMETALS
PLASMA DIAGNOSTICS
RARE GASES
SPECTRA
STARK EFFECT
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BALMER LINES
ELECTRIC DISCHARGES
ELEMENTS
EMISSION SPECTRA
FLUIDS
GASES
HELIUM
HYDROGEN
LINE BROADENING
NONMETALS
PLASMA DIAGNOSTICS
RARE GASES
SPECTRA
STARK EFFECT