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Study on electron emission by a spherical object: dynamics of trapped particles

Published online by Cambridge University Press:  18 March 2019

G. Coppa  and
R. Mulas
G. Coppa*
Affiliation:
Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, 10129 Torino, Italy
R. Mulas
Affiliation:
Independent Scholar
*
†Email address for correspondence: gianni.coppa@polito.it
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Abstract

In this paper, the dynamics of electrons emitted by a spherical object when the total charge of the system is constant is studied in detail. In particular, the condition for which the total electron charge presents damped oscillations is deduced rigorously by considering a perturbation with respect to the steady-state solution. The results obtained can be of utility in simulating the expansion of a spherical plasma by separating the ion and electron time scales.

Keywords

plasma dynamicsplasma instabilitiesplasma nonlinear phenomena
Type
Research Article
Information
Journal of Plasma Physics , Volume 85 , Issue 2 , April 2019 , 905850202
Copyright
© Cambridge University Press 2019 

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