Abstract

Recently developed models are employed to describe the interaction of a high-current relativistic electron beam with planar gold foils in the presence of macroscopic electromagnetic fields. It is shown that, under certain conditions, azimuthal magnetic fields which-either penetrate into the foil and/or exist on the transmission side of the foil can significantly enhance the specific power deposited in the foil over that which would be deposited for diode fields alone. Similar field effects suggest methods for improving the external conversion efficiencies, softening the spectra and focusing the source intensities of flash X-ray facilities. Finally, preliminary results are shown from a new trajectory-field model for self-consistent relativistic electron beam transport.

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