Possible spectral diagnostics for turbulent electric fields in solar flares

Physics

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Electric Fields, Plasma Diagnostics, Solar Flares, Spectral Line Width, Stark Effect, Turbulence Effects, Field Theory (Physics), H Lines, Line Spectra, Magnetohydrodynamic Stability, Photosphere, Solar Physics, Spectrum Analysis

Scientific paper

A high level of electrostatic turbulence can be generated by plasma instabilities in solar flares. The turbulence, in general, has both quasistatic (ionic) and dynamic (electronic) components. Hydrogenic line profiles develop distinct features under the simultaneous effect of the quasistatic and dynamic turbulent electric fields: these features are discussed and the possible inferences that can be drawn as to the nature of the turbulent electric fields through their observation are pointed out. Solar flare spectral diagnostics along these lines can provide an observational test of the existence of turbulent electric fields in the flare region. When a detailed determination of the characteristics of these fields is feasible, it would, in turn, help in identifying the underlying plasma instability mechanisms that give rise to these fields during the flare build-up and associated processes.

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