Collimated ultrabright gamma rays from electron wiggling along a petawatt laser-irradiated wire in the QED regime.

ABSTRACT: Even though high-quality X- and gamma rays with photon energy below mega-electron volt (MeV) are available from large-scale X-ray free electron lasers and synchrotron radiation facilities, it remains a great challenge to generate bright gamma rays over 10 MeV. Recently, gamma rays with energies up to the MeV level were observed in Compton scattering experiments based on laser wakefield accelerators, but the yield efficiency was as low as [Formula: see text], owing to low charge of the electron beam. Here, we propose a scheme to efficiently generate gamma rays of hundreds of MeV from submicrometer wires irradiated by petawatt lasers, where electron accelerating and wiggling are achieved simultaneously. The wiggling is caused by the quasistatic electric and magnetic fields induced around the

SUBMITTER: Wang WM 

PROVIDER: S-EPMC6176611 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature