- Conference date: 19-23 Mar 2000
- Location: Reno,Nevada (USA)
The velocity electron distribution function is developed in terms of Legendre polynomials. It is shown that only a few even-order polynomials contribute to ionic electron excitation, usually the 2 first ones. From the measurement of line polarization it is then possible to separate the relative importance of each contribution. To illustrate this theory, some lines are studied. They correspond to He-like, Li-like and Be-like systems. They are very close in wavelength but well separated. Except for the He-like lines, the other lines are emitted by autoionizing levels. Compared to He-like lines, they are relatively weak for low nuclear charge Z but are intense for high nuclear charge. The spatial and temporal analysis of the polarization of these lines is very promising to detect the presence of nonthermal anisotropic electron in hot plasmas.
- Cumulative distribution functions
- Spatial analysis
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