Magnetic field generation during intense laser channelling in underdense plasma

A. G. Smyth, G. Sarri, M. Vranic, Y. Amano, D. Doria, E. Guillaume, H. Habara, R. Heathcote, G. Hicks, Z. Najmudin, H. Nakamura, P. A. Norreys, S. Kar, L. O. Silva, K. A. Tanaka, J. Vieira, M. Borghesi

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Channel formation during the propagation of a high-energy (120 J) and long duration (30 ps) laser pulse through an underdense deuterium plasma has been spatially and temporally resolved via means of a proton imaging technique, with intrinsic resolutions of a few micron and a few ps, respectively. Conclusive proof is provided that strong azimuthally symmetric magnetic fields with a strength of around 0.5 MG are created inside the channel, consistent with the generation of a collimated beam of
relativistic electrons. The inferred electron beam characteristics may have implications for the cone-free fast-ignition scheme of inertial confinement fusion
Original languageEnglish
Article number063121
Number of pages9
JournalPhysics of Plasmas
Issue number6
Publication statusPublished - 30 Jun 2016


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