Sarri, G. and Corvan, D. J. and Schumaker, W. and Cole, J. M. and Di Piazza, A. and Ahmed, H. and Harvey, C. and Keitel, C. H. and Krushelnick, K. and Mangles, S. P. D. and Najmudin, Z. and Symes, D. and Thomas, A. G. R. and Yeung, M. and Zhao, Z. and Zepf, M. (2014) Ultrahigh Brilliance Multi-MeV gamma-Ray Beams from Nonlinear Relativistic Thomson Scattering. Physical review letters, 113 (22): 224801. ISSN 0031-9007
Full text not available from this repository.Abstract
We report on the generation of a narrow divergence (theta(gamma) <2.5 mrad), multi-MeV (E-max approximate to 18 MeV) and ultrahigh peak brilliance (> 1.8 x 10(20) photons s(-1) mm(-2) mrad(-2) 0.1% BW) gamma-ray beam from the scattering of an ultrarelativistic laser-wakefield accelerated electron beam in the field of a relativistically intense laser (dimensionless amplitude a(0) approximate to 2). The spectrum of the generated gamma- ray beam is measured, with MeV resolution, seamlessly from 6 to 18 MeV, giving clear evidence of the onset of nonlinear relativistic Thomson scattering. To the best of our knowledge, this photon source has the highest peak brilliance in the multi-MeV regime ever reported in the literature.