Summary
By applying the method of the equation of motion to density fluctuations and using the random phase approximation, the dispersion relation for aN-component plasma is found. In the case ofN = 2 we obtain the dispersion relation derived by Nakajima. The application is also made to a three-component classical plasma and the corresponding frequencies are determined.
Riassunto
Applicando il metodo dell’equazione del moto alle fluttuazioni di densità e usando l’approssimazione di fase casuale, si trova la relazione di dispersione per un plasma adN componenti. Nel casoN = 2, si ottiene la relazione di dispersione dedotta da Nakajima. Se ne fa un’applicazione a un plasma classico a tre componenti e si determinano le corrispondenti frequenze.
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Sips, V. Longitudinal oscillations in plasma. Nuovo Cim 30, 947–957 (1963). https://doi.org/10.1007/BF02750427
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DOI: https://doi.org/10.1007/BF02750427