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Ion acoustic waves in expanding strongly coupled plasmas

Published online by Cambridge University Press:  30 July 2013

J. T. MENDONÇA ,
N. SHUKLA ,
D. P. RESENDES  and
A. SERBETO
J. T. MENDONÇA
Affiliation:
IPFN, Instituto Superior Técnico, Lisboa, Portugal (nshukla@ist.utl.pt)
N. SHUKLA
Affiliation:
IPFN, Instituto Superior Técnico, Lisboa, Portugal (nshukla@ist.utl.pt)
D. P. RESENDES
Affiliation:
IPFN, Instituto Superior Técnico, Lisboa, Portugal (nshukla@ist.utl.pt)
A. SERBETO
Affiliation:
Instituto de Física, University Federal Fluminense, Niteroi RJ, Brazil
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Abstract

We consider the excitation and dispersion of ion acoustic waves in expanding ultracold plasmas, taking into account the influence of boundary conditions. A cylindrical plasma geometry is assumed. We show that temporal changes in the medium lead to a wave frequency shift, associated with an evolving radial and standing wave mode structure, and to the temporal change of the background plasma parameters. A non-collisional model for the cylindrical geometry is also proposed.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Special Issue 6: Special issue in memory of Professor Padma Kant Shukla 1950-2013 , December 2013 , pp. 1063 - 1066
Copyright
Copyright © Cambridge University Press 2013 

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