Generation of Short Wavelength Radiation and Energetic Particles by Using PW-Class Lasers

This paper describes recent progress of the study of short wavelength coherent radiation and laser particle acceleration by the use of ultra-intense lasers in our institute. In laser-driven soft x-ray laser research, the 18.8 nm laser has been demonstrated with the repetition rate of 10 Hz, and new driver laser with higher repetition rate is under development. Generation of higher order harmonics from relativistic plasmas is conducted by using J-KAREN-P, and the source size together with the spatial coherence are investigated. We also show the progress in laser-driven heavy ion acceleration study, which is done as a part of the development of compact cancer therapy machine, and the proposal of alternative method toward high average power coherent attosecond x-ray generation.