Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep29518
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Funding
- National Natural Science Foundation of China [11425418, 11127901, 11304271, 11205228, 11505263]
- State Key Laboratory Program of Chinese Ministry of Science and Technology
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Inverse Compton scattering between ultra-relativistic electrons and an intense laser field has been proposed as a major route to generate compact high-brightness and high-energy gamma-rays. Attributed to the inherent synchronization mechanism, an all-optical Compton scattering gamma-ray source, using one laser to both accelerate electrons and scatter via the reflection of a plasma mirror, has been demonstrated in proof-of-principle experiments to produce a x-ray source near 100 keV. Here, by designing a cascaded laser wakefield accelerator to generate high-quality monoenergetic e-beams, which are bound to head-on collide with the intense driving laser pulse via the reflection of a 20-umthick Ti foil, we produce tunable quasi-monochromatic MeV gamma-rays (33% full-width at half-maximum) with a peak brilliance of similar to 3 x 10(22) photons s(-1) mm(-2) mrad(-2) 0.1% BW at 1 MeV. To the best of our knowledge, it is one order of magnitude higher than ever reported value of its kinds in MeV regime. This compact ultrahigh brilliance gamma-ray source may provide applications in nuclear resonance fluorescence, x-ray radiology and ultrafast pump-probe nondestructive inspection.
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