Open AccessEnhanced soft x-ray betatron radiation from a transversely oscillating laser plasma wake
Author(s) -
Jiyuan Chen,
Sa Xu,
Ning Tang,
Sicong Wang,
Zhengyan Li
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.420150
Subject(s) - betatron , physics , laser , optics , electron , plasma , atomic physics , radiation , oscillation (cell signaling) , plasma acceleration , nuclear physics , biology , genetics
Betatron radiation from relativistic electrons accelerated by a laser plasma wakefield is a promising x-ray source. However, the betatron photon number and energy is limited by the MeV electron energy when accelerated by a sub-terawatt laser pulse. Here we have proposed a scheme of enhancing the betatron radiation of electrons accelerated by a millijoule laser pulse. By applying a moderate mid-infrared control laser field, the plasma bubble and electrons injected inside are forced to oscillate transversely at a high, tunable frequency, enhancing the betatron oscillation strength and resulting in soft x-ray radiation.