Author/Authors :
Chen، نويسنده , , L.M. and Wang، نويسنده , , W.M. and Kando، نويسنده , , M. and Hudson، نويسنده , , L.T. and Liu، نويسنده , , F. and Lin، نويسنده , , X.X. and Ma، نويسنده , , J.L. and Li، نويسنده , , Y.T. and Bulanov، نويسنده , , S.V. and Tajima، نويسنده , , T. and Kato، نويسنده , , Y. and Sheng، نويسنده , , Z.M. and Zhang، نويسنده , , J.، نويسنده ,
Abstract :
In this report we address the current situation of laser-driven hard X-ray sources for imaging applications, especially the saturation of X-ray conversion efficiency and the serious impact upon imaging quality. By employing high contrast laser pulses, the conversion efficiency to X-rays from solid foil targets is improved and the structure of the spectrum can be optimized with respect to imaging applications. In addition, bright Ar K-shell X-rays with very little continuum background have been generated by irradiating, with an ultra-high contrast laser, a target of Ar gas clusters created by a gas jet. These improvements show great potential for single-shot ultrafast X-ray imaging.
