Ultrahigh Brilliance Multi-MeV gamma-Ray Beams from Nonlinear Relativistic Thomson Scattering

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). ISSN 0031-9007

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
82699
Deposited By:
Deposited On:
08 Nov 2016 11:00
Refereed?:
Yes
Published?:
Published
Last Modified:
21 Nov 2020 05:01