Author:
Feng B.,Qin C. Y.,Geng X. S.,Yu Q.,Wang W. Q.,Wu Y. T.,Yan X.,Ji L. L.,Shen B. F.
Abstract
AbstractWe investigated the emission of multi-MeV γ-Ray beams with orbital angular momentum (OAM) from the interaction of an intense circularly polarized (CP) laser with a micro-channel plasma target. The driving laser can generate high energy electrons via direct laser acceleration within the channel. By attaching a plasma foil as the reflecting mirror, the CP laser is reflected and automatically colliding with the electrons. High energy gamma-photons are emitted through inverse Compton scattering (ICS) during collision. Three-dimensional particle-in-cell simulations reveal that the spin angular momentum (SAM) of the CP laser can be transferred to the OAM of accelerated electrons and further to the emitted gamma-ray beam. These results may guide future experiments in laser-driven gamma-ray sources using micro-structures.
Publisher
Springer Science and Business Media LLC
Cited by
10 articles.
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