Observation of a Hot High-Current Electron Beam from a Self-Modulated Laser Wakefield Accelerator

M. I. K. Santala 1, 2 Z. Najmudin 1 E. L. Clark 1 M. Tatarakis 1 K. Krushelnick 1 A.E. Dangor 1 Victor Malka 3 Jérôme Faure 3 R. Allott 4 R.J. Clarke 4
1 Blackett Laboratory
2 Department of Engineering Physics and Mathematics
3 LULI - Laboratoire pour l'utilisation des lasers intenses
4 CLF - Central Laser Facility
Abstract : A highly relativistic electron beam produced by a 50 TW laser-plasma accelerator has been characterized by photonuclear techniques. The beam has large divergence that increases with plasma density. The electron yield also increases with plasma density and reaches up to 4×10^11 electrons ( >10MeV), with beam current approaching the Alfvén limit. Effective electron temperatures exceeding 8 MeV are found, leading to an order of magnitude higher photonuclear activation yield than in solid target experiments with the same laser system.
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Submitted on : Thursday, September 23, 2010 - 3:44:50 PM
Last modification on : Thursday, March 21, 2019 - 1:08:43 PM

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M. I. K. Santala, Z. Najmudin, E. L. Clark, M. Tatarakis, K. Krushelnick, et al.. Observation of a Hot High-Current Electron Beam from a Self-Modulated Laser Wakefield Accelerator. Physical Review Letters, American Physical Society, 2001, 86 (7), pp.1227-1230. ⟨10.1103/PhysRevLett.86.1227⟩. ⟨hal-00520553⟩

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