10 September 2005 Development of high-brightness hard x-ray source by Laser-Compton scattering
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Abstract
Laser-Compton scattering is a promising method for generating high-brightness, ultrashort, energy-tunable X-rays. We have developed a compact X-ray source using laser-Compton scattering. Hard X-rays, ranging from 15 keV to 34 keV, were generated with a low-emittance, 38 MeV, 0.8 nC electron accelerator and a femtosecond 4TW Ti:sapphire laser. The created X-rays were composed of 2×106 (5×105) photons/pulse for interaction angles between an electron bunch and a laser pulse of 165° (90°). A highly accurate timing synchronization scheme was employed, and the fluctuation of the generated X-rays was suppressed to 11% (rms) for the 90° scattering. The spatial (angular) distributions for the intensity and the energy of the generated X-ray were measured, and agreed well with theoretical calculations. Thus, X-ray imaging has been demonstrated using a phase-contrast technique with the interference of an X-ray beam.
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Tatsuya Yanagida, Terunobu Nakajyo, Shinji Ito, Fumio Sakai, "Development of high-brightness hard x-ray source by Laser-Compton scattering", Proc. SPIE 5918, Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, 59180V (10 September 2005); doi: 10.1117/12.618023; https://doi.org/10.1117/12.618023
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