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

M. I. K. Santala; Z. Najmudin; E. L. Clark; M. Tatarakis; K. Krushelnick; A.E. Dangor; Victor Malka; Jérôme Faure; R. Allott; R.J. Clarke

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.

Document type :

Journal articles

Domain :

Physics [physics] / Physics [physics] / Optics [physics.optics]

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https://hal-polytechnique.archives-ouvertes.fr/hal-00520553
Contributor : Thuy Le <>
Submitted on : Thursday, September 23, 2010 - 3:44:50 PM
Last modification on : Thursday, March 21, 2019 - 1:08:43 PM

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

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

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