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Driving innovations in manufacturing: Open Access research from DMEM

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Design, Manufacture & Engineering Management (DMEM).

Centred on the vision of 'Delivering Total Engineering', DMEM is a centre for excellence in the processes, systems and technologies needed to support and enable engineering from concept to remanufacture. From user-centred design to sustainable design, from manufacturing operations to remanufacturing, from advanced materials research to systems engineering.

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Laser plasma acceleration of electrons: towards the production of monoenergetic beams

Krushelnick, K. and Najmudin, Z. and Mangles, S.P.D. and Thomas, A.G.R. and Wei, M.S. and Walton, B.R. and Gopal, A. and Viskup, R. and Gallacher, J.G. and Jaroszynski, D.A. (2005) Laser plasma acceleration of electrons: towards the production of monoenergetic beams. Physics of Plasmas, 12 (5). 056711-1-056711-8. ISSN 1070-664X

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Abstract

The interaction of high intensity laser pulses with underdense plasma is investigated experimentally using a range of laser parameters and energetic electron production mechanisms are compared. It is clear that the physics of these interactions changes significantly depending not only on the interaction intensity but also on the laser pulse length. For high intensity laser interactions in the picosecond pulse duration regime the production of energetic electrons is highly correlated with the production of plasma waves. However as intensities are increased the peak electron acceleration increases beyond that which can be produced from single stage plasma wave acceleration and direct laser acceleration mechanisms must be invoked. If, alternatively, the pulse length is reduced such that it approaches the plasma period of a relativistic electron plasma wave, high power interactions can be shown to enable the generation of quasimonoenergetic beams of relativistic electrons.