X-ray pulse generation by laser Compton scattering using a high-charge, laser-accelerated, quasi-monoenergetic electron beam

摘要

X-ray pulse generation is demonstrated by laser Compton scattering using a laser-accelerated quasi-monoenergetic electron (QME) beam contAIning 70 pC electrons with an energy of 60 MeV in the monoenergetic peak. A well-collimated X-ray beam with a divergence angle of approximately 5mrad is produced. The X-ray photon number is estimated to be 2×10~7 per pulse, which is 10 thousand times larger than that achieved in a previous study using a laser-accelerated QME beam. The peak energy of the X-rays is estimated to be 60keV by a numerical simulation using the measured characteristics of the QME beam.