Abstract
By extending a prior model [A.R. Bell, J.R. Davies, S.M. Guerin, Phys. Rev. E 58, 2471 (1998)], the magnetic field generated during the transport of a fast electron beam driven by an ultraintense laser in a solid target is derived analytically and applied to estimate the effect of such field on fast electron propagation through a buried high-Z layer in a lower-Z target. It is found that the effect gets weaker with the increase of the depth of the buried layer, the divergence of the fast electrons, and the laser intensity, indicating that magnetic field effects on the fast electron divergence as measured from K a X-ray emission may need to be considered for moderate laser intensities. On the basis of the calculations, some considerations are made on how one can mitigate the effect of the magnetic field generated at the interface.
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Yang, X., Xu, H., Zhuo, H. et al. Effects of buried high-Z layers on fast electron propagation. Eur. Phys. J. D 68, 30 (2014). https://doi.org/10.1140/epjd/e2013-40576-4
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DOI: https://doi.org/10.1140/epjd/e2013-40576-4