Generation of Hard X-rays by Irradiation of Femtosecond Terawatt Laser

摘要

Ultra-short pulsed hard X-rays are generated by focusing femtosecond laser beams onto metal targets with a table-top-terawatt system. Temporal and energy profiles of the generated X-rays are measured with an X-ray streak camera and an X-ray CCD camera, respectively. X-rays with a pulse width of 6ps and an energy of 8 keV are generated from a copper target with a power density of 10~17 W/cm~2.