Intense Super-radiant X-rays from a Compact Source using a Nanocathode Array and Emittance Exchange
Abstract
A novel method of producing intense short wavelength radiation from relativistic electrons is described. The electrons are periodically bunched at the wavelength of interest enabling in-phase super-radiant emission that is orders of magnitude more intense than that of unbunched electrons. The periodic bunching is achieved in steps beginning with an array of beamlets emitted from a nanoengineered field emission array. The beamlets are then manipulated and converted to a longitudinal density modulation via a transverse to longitudinal emittance exchange. Periodic bunching at short wavelength is shown to be possible, and the partially coherent x-ray properties produced by Inverse Compton scattering from an intense laser are estimated for an example at 13 nm wavelength using a 1.5 MeV electron beam.
Cite
@article{arxiv.1202.0318,
title = {Intense Super-radiant X-rays from a Compact Source using a Nanocathode Array and Emittance Exchange},
author = {W. S. Graves and F. X. Kaertner and D. E. Moncton and P. Piot},
journal= {arXiv preprint arXiv:1202.0318},
year = {2014}
}
Comments
4 pages, 4 figures, submitted to Phys Rev Lett