论文信息 - Experimental study of the hot and warm electron populations in an electron cyclotron resonance argon--oxygen--hydrogen plasma

Experimental study of the hot and warm electron populations in an electron cyclotron resonance argon--oxygen--hydrogen plasma

Measurements of bremsstrahlung down to 7 keV emitted from a 7.25 GHz electron cyclotron resonance discharge and the deconvolution of the spectra using a newly developed integration method yield the exact electron distribution function. Two separate electron populations with temperatures about 3 and 25 keV and with densities about (0.2...4)108 cm−3 were recorded. First, results are obtained for the behavior of these populations belonging to the mixture (argon–oxygen–hydrogen). Gas mixing increases the densities of these populations, but hardly changes the temperatures.

[1] R. Grötzschel,et al. Slow, highly charged ions from a 7.25 GHz ECR ion source , 1995 .

[2] R. Friedlein,et al. Angle dispersive de-convolution of bremsstrahlung spectra from plasma , 1994 .

[3] C. Janicki. Modelling of the continuum X-ray spectra produced by anisotropic electron distributions in tokamak plasmas under LHCD conditions , 1993 .

[4] A. Girard. Plasma diagnosis related to ion sources (invited) , 1992 .

[5] G. Melin,et al. A study of the parallel energy distribution of lost electrons from the central plasma of an electron cyclotron resonance ion source , 1992 .

[6] C. Barué,et al. Hot electron studies in the Minimafios ECR ion source , 1992 .

[7] R. Geller. ECRIS: The Electron Cyclotron Resonance Ion Sources , 1990 .

[8] A. Drentje. The ECR ion source and associated equipment at the KVI , 1985 .

[9] K. Wiesemann,et al. X-ray bremsstrahlung measurements on an ECR-discharge in a magnetic mirror , 1982 .

[10] N. Abe,et al. The Polarization of Bremsstrahlung X-Rays Emitted from an ECR Plasma , 1980 .

[11] K. Bernhardi. An improved deconvolution method for bremsstrahlung spectra from hot plasmas , 1980 .

[12] L. Dupas,et al. Theory of betatronic electron acceleration in an azimuthal pinch as a function of initial conditions: Comparison of experimental results , 1963 .