Coherence-based transverse measurement of synchrotron x-ray radiation from relativistic laser-plasma interaction and laser-accelerated electrons

Abstract : We observe Fresnel edge diffraction of the x-ray beam generated by the relativistic interaction of a high-intensity laser pulse with He gas. The observed diffraction at center energy 4.5 keV agrees with Gaussian incoherent source profile of full-width-half-maximum (FWHM)<8 μm. Analysis indicates this corresponds to an upper limit on the transverse profile of laser-accelerated electrons within the plasma in agreement with three-dimensional, particle-in-cell results (FWHM=4 μm).
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Submitted on : Tuesday, September 28, 2010 - 6:56:02 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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R. C. Shah, F. Albert, Kim Ta Phuoc, O. Shevchenko, Davide Boschetto, et al.. Coherence-based transverse measurement of synchrotron x-ray radiation from relativistic laser-plasma interaction and laser-accelerated electrons. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2006, 74 (4), pp.045401. ⟨10.1103/PhysRevE.74.045401⟩. ⟨hal-00521891⟩

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