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

S. Kar, A.P.L. Robinson, D.C. Carroll, O. Lundh, K. Markey, P. McKenna, P.A. Norreys, M. Zepf

Research output: Contribution to journalArticle

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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.
LanguageEnglish
Article number055001
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number5
DOIs
Publication statusPublished - 5 Feb 2009

Fingerprint

relativistic electron beams
electrical resistivity
magnetic fields
thermal emission
optical transition
tin
flexibility
slabs
electrons
fusion
signatures
electron beams
aluminum
radiation
metals
simulation
energy

Keywords

  • generation
  • absorption
  • density
  • plasmas
  • physics
  • lasers
  • energy

Cite this

Kar, S. ; Robinson, A.P.L. ; Carroll, D.C. ; Lundh, O. ; Markey, K. ; McKenna, P. ; Norreys, P.A. ; Zepf, M. / Guiding of relativistic electron beams in solid targets by resistively controlled magnetic fields. In: Physical Review Letters. 2009 ; Vol. 102, No. 5.
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Guiding of relativistic electron beams in solid targets by resistively controlled magnetic fields. / Kar, S.; Robinson, A.P.L.; Carroll, D.C.; Lundh, O.; Markey, K.; McKenna, P.; Norreys, P.A.; Zepf, M.

In: Physical Review Letters, Vol. 102, No. 5, 055001, 05.02.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Guiding of relativistic electron beams in solid targets by resistively controlled magnetic fields

AU - Kar, S.

AU - Robinson, A.P.L.

AU - Carroll, D.C.

AU - Lundh, O.

AU - Markey, K.

AU - McKenna, P.

AU - Norreys, P.A.

AU - Zepf, M.

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AB - 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.

KW - generation

KW - absorption

KW - density

KW - plasmas

KW - physics

KW - lasers

KW - energy

U2 - 10.1103/PhysRevLett.102.055001

DO - 10.1103/PhysRevLett.102.055001

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JO - Physical Review Letters

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