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arXiv · 1202.0318

Intense Super-radiant X-rays from a Compact Source using a Nanocathode Array and Emittance Exchange

W. S. Graves·F. X. Kaertner·D. E. Moncton·P. Piot
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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.

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W. S. Graves, F. X. Kaertner, D. E. Moncton, P. Piot. 2012-02-01. Intense Super-radiant X-rays from a Compact Source using a Nanocathode Array and Emittance Exchange. https://doi.org/10.1103/physrevlett.108.263904

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