γ-ray generation enhancement by the charge separation field in laser-target interaction in the radiation dominated regime
Capdessus, R. and Lobet, M. and d'Humieres, E. and Tikhonchuk, V. T. (2014) γ-ray generation enhancement by the charge separation field in laser-target interaction in the radiation dominated regime. Physics of Plasmas, 21. 123120. ISSN 1070-664X (https://doi.org/10.1063/1.4904813)
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Abstract
A new source of radiation can be created with a laser pulse of intensity 1023W/cm2 interacting with a slightly overdense plasma. Collective effects driven by the electrostatic field significantly enhance the synchrotron radiation. They impact on the laser energy repartition leading to a specific emission but also constitute a crucial element for the intense radiation production. They allow electrons to be accelerated over a length up to 10 laser wavelengths favoring emission of an intense radiation. It is shown that charge separation field depends on the ion mass and target thickness but also on laser polarization. These phenomena are studied with an one dimensional relativistic particle-in-cell code accounting for the classical radiation reaction force.
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Item type: Article ID code: 57066 Dates: DateEvent30 December 2014Published8 December 2014AcceptedNotes: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. Subjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 25 Jul 2016 09:13 Last modified: 26 Apr 2024 00:26 URI: https://strathprints.strath.ac.uk/id/eprint/57066