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Title: Magnetic field generation during intense laser channelling in underdense plasma

Abstract

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 μm 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.

Authors:
; ; ; ;  [1]; ; ; ;  [2]; ; ;  [3]; ;  [4]; ; ;  [5]
  1. School of Mathematics and Physics, The Queen's University of Belfast, University Road, Belfast BT7 1NN (United Kingdom)
  2. GoLP/IPFN, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon (Portugal)
  3. Graduate School of Engineering Osaka University. Suita, Osaka 5650871 (Japan)
  4. STFC Rutherford Appleton Laboratory, Didcot, Oxon OX1 0Qx (United Kingdom)
  5. Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ (United Kingdom)
Publication Date:
OSTI Identifier:
22598926
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHANNELING; DEUTERIUM; ELECTRON BEAMS; ELECTRONS; INERTIAL CONFINEMENT; LASERS; MAGNETIC FIELDS; PLASMA; PROTONS; PULSES; RELATIVISTIC RANGE; THERMONUCLEAR IGNITION

Citation Formats

Smyth, A. G., Sarri, G., Doria, D., Kar, S., Borghesi, M., Vranic, M., Guillaume, E., Silva, L. O., Vieira, J., Amano, Y., Habara, H., Tanaka, K. A., Heathcote, R., Norreys, P. A., Hicks, G., Najmudin, Z., and Nakamura, H. Magnetic field generation during intense laser channelling in underdense plasma. United States: N. p., 2016. Web. doi:10.1063/1.4953547.
Smyth, A. G., Sarri, G., Doria, D., Kar, S., Borghesi, M., Vranic, M., Guillaume, E., Silva, L. O., Vieira, J., Amano, Y., Habara, H., Tanaka, K. A., Heathcote, R., Norreys, P. A., Hicks, G., Najmudin, Z., & Nakamura, H. Magnetic field generation during intense laser channelling in underdense plasma. United States. doi:10.1063/1.4953547.
Smyth, A. G., Sarri, G., Doria, D., Kar, S., Borghesi, M., Vranic, M., Guillaume, E., Silva, L. O., Vieira, J., Amano, Y., Habara, H., Tanaka, K. A., Heathcote, R., Norreys, P. A., Hicks, G., Najmudin, Z., and Nakamura, H. Wed . "Magnetic field generation during intense laser channelling in underdense plasma". United States. doi:10.1063/1.4953547.
@article{osti_22598926,
title = {Magnetic field generation during intense laser channelling in underdense plasma},
author = {Smyth, A. G. and Sarri, G. and Doria, D. and Kar, S. and Borghesi, M. and Vranic, M. and Guillaume, E. and Silva, L. O. and Vieira, J. and Amano, Y. and Habara, H. and Tanaka, K. A. and Heathcote, R. and Norreys, P. A. and Hicks, G. and Najmudin, Z. and Nakamura, H.},
abstractNote = {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 μm 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.},
doi = {10.1063/1.4953547},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}