Shifts and widths of hydrogenic ion lines. Final report, 1 October 1983-30 September 1984

Technical Report · Fri Mar 01 04:00:00 EST 1985

OSTI ID:5689942

Griem, H R

The resonance lines of C VI, N VII, and O VIII were studied in laser-produced plasmas. Use was made of the multi-beam Omega laser system (at the Laboratory of Laser Energetics at the University of Rochester) to produce dense plasmas with electron densities (N/sub e/) in the range 10/sup 21/ to 10/sup 22/cm/sup -3/ from spherical microballoons. The lasers were operated at two wavelengths - 1.06 ..mu..m and 3513A. The observed resonance lines of the hydrogen-like ions do not show any shift larger than the experimental accuracy. A new analysis of the experimental data of Adcock and Griem is also presented. According to the new analysis no line shift was obtained in that experiment either, and the reported shifts were due to an error in the wavelength calibration. The results of the present experiment and those of Adcock and Griem indicate that the resonance lines of C VI are unshifted to within an experimental accuracy of +-0.015A. A discussion of the implications of the present results and some other experimental shift studies for several plasma shift models is also given, indicating a general disagreement between most models and experiments.

• Research Organization: Maryland Univ., College Park (USA). Lab. for Plasma and Fusion Energy Studies
• DOE Contract Number: AS08-84DP40192
• OSTI ID: 5689942
• Report Number(s): DOE/DP/40192-1; ON: DE85011375
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
CHARGED PARTICLES
ELECTRON DENSITY
HYDROGEN IONS
IONS
LASER TARGETS
LASER-PRODUCED PLASMA
PLASMA
RESONANCE
SPECTRAL SHIFT
TARGETS