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Electric field dynamics and ion acceleration in the self-channeling of a superintense laser pulse

Macchi, A. and Ceccherini, F. and Cornolti, F. and Kar, S. and Borghesi, M. (2007) Electric field dynamics and ion acceleration in the self-channeling of a superintense laser pulse. arXiv .

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Abstract

SUMMARY The dynamics of electric field generation and radial acceleration of ions by a laser pulse of relativistic intensity propagating in an underdense plasma has been investigated using an one-dimensional electrostatic, ponderomotive model developed to interpret experimental measurements of electric fields [S. Kar et al, New J. Phys. *9*, 402 (2007)]. Ions are spatially focused at the edge of the charge-displacement channel, leading to hydrodynamical breaking, which in turns causes the heating of electrons and an "echo" effect in the electric field. The onset of complete electron depletion in the central region of the channel leads to a smooth transition to a "Coulomb explosion" regime and a saturation of ion acceleration.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/01 - Fisica sperimentale
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 06 Aug 2013 10:46
Last Modified: 06 Aug 2013 10:46
URI: http://eprints.adm.unipi.it/id/eprint/1318

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