TITLE

Effects of external axial magnetic field on fast electron propagation

AUTHOR(S)
Yang, X. H.; Borghesi, M.; Qiao, B.; Geissler, M.; Robinson, A. P. L.
PUB. DATE
September 2011
SOURCE
Physics of Plasmas;Sep2011, Vol. 18 Issue 9, p093102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A scheme employing an external axial magnetic field is proposed to diagnose the intrinsic divergence of laser-generated fast electron beams, and this is studied numerically with hybrid simulations. The maximum beam radius of fast electrons increases with the initial divergence and decreases with the amplitude of the axial magnetic field. It is indicated that the intrinsic divergence of fast electrons can be inferred from measurements of the beam radius at different depth under the axial field. The proposed scheme here may be useful for future fast ignition experiments and in other applications of laser-generated fast electron beams.
ACCESSION #
66184790

 

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