Sommario
Si considera un gas ionizzato, non necessariamente in equilibrio termico, la cui dinamica sia dominata dal processo di scambio di carica, e si studiano i seguenti due problemi: evoluzione temporale di onde sinusoidali su un equilibrio uniforme; propagazione di oscillazioni sinusoidali forzate alla parete in un equilibrio spazialmente limitato. Si mostra in particolare la stabilitá degli equilibri per qualunque forma della funzione di distribuzione.
Summary
An ionized gas whose dynamics is dominated by charge exchange is considered. The following two problems are studied: the time behaviour of sinusoidal waves in a uniform equilibrium; the propagation in a bounded equilibrium of sinusoidal oscillations forced to the wall. It is shown, in particular, that the equilibria considered, not necessarily thermal equilibria, are stable for any form of the distribution function.
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Research supported in part by C.N.R., G.N.F.M.
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Buttazzoni, F., Nocentini, A. On the dynamics of the perturbations in an ionized gas dominated by charge exchange. Meccanica 20, 285–290 (1985). https://doi.org/10.1007/BF02352681
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DOI: https://doi.org/10.1007/BF02352681