Spectroscopic diagnosis of long-scale-length exploding-foil plasma in the presence of an intense radiation field

Details Spectroscopic diagnosis of long-scale-length exploding-foil plasma in the presence of an intense radiation field Spectroscopic diagnosis of long-scale-length exploding-foil plasma in the presence of an intense radiation field

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992htpd.confq..15s&link_type=abstract

Presented at the 9th Topical Conference on High-Temperature Plasma Diagnostics, Santa Fe, NM, 15-19 Mar. 1992

Computer Science

Current Density, Electron Energy, Experiment Design, Explosions, Foils, Impurities, Laser Plasmas, Plasma Composition, Plasma Diagnostics, Radiation Distribution, X Ray Spectroscopy, Ionization, Plasma Radiation, Spatial Resolution, Temperature Dependence

Scientific paper

An effective technique for measuring the local electron temperature and density of a laser-produced plasma involves analysis of the emission and/or absorption spectrum from an impurity dopant. Spatial resolution can be obtained by depositing the impurity in the form of a small microdot on or slightly below the surface of the foil, so that it remains spatially confined while the plasma evolves. However, when an intense high-energy radiation field is present, the ionization balance, level population, and resulting spectrum produced by the impurity may be significantly perturbed. We are currently using several computer models to study the effects of such a radiation field for experimental conditions that could be obtained using the Nova laser facility, and are concentrating on the behavior of line intensity ratios that are typically used for density and temperature diagnosis. The goal of the work presented in this paper is to design an experiment that can be conducted on Nova to determine the feasibility of spectroscopic diagnosis when an intense high-energy radiation field is present.

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