期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.224801
关键词
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资金
- EPSRC [EP/L013975/1, EP/I029206/1]
- STFC [ST/J002062/1]
- NSF CAREER [1054164]
- EPSRC [EP/L013975/1, EP/H00601X/1, EP/I029206/1] Funding Source: UKRI
- STFC [ST/J002062/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Physics [1054164] Funding Source: National Science Foundation
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.
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