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Finite geometry effects on the stability of a charged beam propagating through a relativistic annular electron beam

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2 Author(s)
Ganguli, G. ; Science Applications Inc., McLean, Virginia 22102 ; Palmadesso, P.

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Finite geometry effects on the stability properties of a charged beam propagating through an intense relativistic annular electron beam have been studied. The stability of the system under transverse oscillation has been examined in detail in a parameter domain pertinent to the collective particle accelerator, currently under development at the Naval Research Laboratory. Both the normal mode and the convective aspects of this instability have been investigated. Despite a substantial temporal growth rate as predicted by the normal mode approach, this instability does not prevent successful acceleration of a portion of the axial beam. Thus the transverse oscillation is not fatal to the collective particle accelerator operation.

Published in:

Journal of Applied Physics  (Volume:55 ,  Issue: 7 )