Guiding of relativistic electron beams in solid targets by resistively controlled magnetic fields

Kar, S. and Robinson, A.P.L. and Carroll, D.C. and Lundh, O. and Markey, K. and McKenna, P. and Norreys, P.A. and Zepf, M. (2009) Guiding of relativistic electron beams in solid targets by resistively controlled magnetic fields. Physical Review Letters, 102 (5). 055001. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.102.055001)

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Abstract

Guided transport of a relativistic electron beam in solid is achieved experimentally by exploiting the strong magnetic fields created at the interface of two metals of different electrical resistivities. This is of substantial relevance to the Fast Ignitor approach to fusion energy production [M. Tabak et al., Phys. Plasmas 12, 057305 (2005)], since it allows the electron deposition to be spatially tailored-thus adding substantial design flexibility and preventing inefficiencies due to electron beam spreading. In the experiment, optical transition radiation and thermal emission from the target rear surface provide a clear signature of the electron confinement within a high resistivity tin layer sandwiched transversely between two low resistivity aluminum slabs. The experimental data are found to agree well with numerical simulations.

  • Item type:Article
    ID code:19279
    Dates:
    Date
    Event
    5 February 2009
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Strathprints Administrator
    Date deposited:09 Jun 2010 15:20
    Last modified:08 Apr 2024 17:48
    URI:https://strathprints.strath.ac.uk/id/eprint/19279
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