Whistlers-Use for Determination of Composition and Temperature
A review is given of the theory of the ‘Eckersley’ whistler, the nose whistler, and the ion cyclotron whistler. The technique for deriving the magnetospheric electron concentration from nose whistlers and the results concerning the ‘knee’ in the density profile and the plasmapause are discussed. From ion cyclotron whistlers the ion concentration, the electron concentration, the ion gyro-frequencies, and the ion temperatures in the ionosphere can be obtained. The method is described and representative results are presented. The use of other whistler mode noise such as the lower hybrid resonance noise for the determination of composition and temperature is also discussed.
KeywordsElectron Concentration Magnetic Field Line Lightning Discharge Fractional Concentration Crossover Frequency
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