X-ray laser development of JAERI/Kansai

The main issue of X-ray laser research in JAERI/Kansai is to develop feasible and stable compact X-ray laser sources aiming with high X-ray conversion efficiency and high coherence in soft X-ray region. The potential of X-ray laser application capability is expected to cover a variety of fields on physics and technology such as high density plasma diagnostics, surface physics, microscopic observation of many kind of materials, etc., with the properties of short wavelength, high brightness, high coherence and short pulse duration. To achieve shorter wavelength generation of X-ray laser under 10 nm, it is expected to be possible by computer simulation using thin foil target with transient excitation. (author)