Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange
Name
Graves-2012-Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange.pdf
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685.85 KB
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Author(s)
Graves, William S.
Kaertner, Franz X.
Moncton, David E.
Piot, Philippe
Date Issued
June 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Graves, W. et al. “Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange.” Physical Review Letters 108.26 (2012): 263904. © 2012 American Physical Society.
Version
Final published version
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 superradiant emission that is far more intense than from 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. The proposed method increases the efficiency of x-ray production by several orders of magnitude, potentially enabling compact x-ray sources to produce brilliance and flux similar to major synchrotron facilities.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
MIT Nuclear Reactor Laboratory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.263904
