Monoenergetic electron parameters in a spheroid bubble model

doi:10.1088/1674-1056/22/2/025203

Abstract A reliable analytical expression for the potential of plasma waves with phase velocities near the speed of light is derived. The presented spheroid cavity model is more consistent than the previous spherical and ellipsoidal models and it explains the mono-energetic electron trajectory more accurately, especially at the relativistic region. The maximum energy of electrons is calculated and it is shown that the maximum energy of the spheroid model is less than that of the spherical model. The electron energy spectrum is also calculated and it is found that the energy distribution ratio of electrons ΔE/E for the spheroid model under the conditions reported here is half that of the spherical model and it is in good agreement with the experimental value in the same conditions. As a result, the quasi-mono-energetic electron output beam interacting with the laser plasma can be more appropriately described with this model.

Keywords: quasi-mono-energetic electron bunches intense laser plasma accelerator laser wake field bubble regime

Received: 11 May 2011
Revised: 15 August 2012
Accepted manuscript online:

PACS:	52.38.-r	(Laser-plasma interactions)
	41.75.Jv	(Laser-driven acceleration?)
	42.62.-b	(Laser applications)
	41.75.Lx	(Other advanced accelerator concepts)

Corresponding Authors: H. Sattarian
E-mail: hsattarian@yahoo.com; rahmatsh@yahoo.com

Cite this article:

H. Sattarian, Sh. Rahmatallahpur, T. Tohidi Monoenergetic electron parameters in a spheroid bubble model 2013 Chin. Phys. B 22 025203

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