中文摘要：

利用kHz激光与固体靶相互作用产生了平均流强为1.3×107 photons · sr？1· s？1的X射线源，研究了激光的对比度和能量对激光与固体靶相互作用产生的X射线能谱及Kα产额的影响，使用刀边成像技术测量了X射线源的源尺寸，并进行了初步的成像实验.实验中观察到对于非相对论级别的激光脉冲，降低激光的对比度有利于提高Kα产额，而使用高对比度高强度激光，更有利于获得高通量高信噪比X射线源.

英文摘要：

X-ray radiation with an average flux of 1.3×107 photons · sr？1· s？1 is generated by the interaction between ultra-short laser and solid target working at 1 kHz repetition rate. A knife edge is introduced to measure the source size. The X-ray emission shows obvious dependences on the laser contrast and intensity. It is discovered that at lower intensity the Kαyield increases with lower laser contrast. However, by using high contrast and high intensity laser pulses, high flux and high signal-to-noise ratio Kα X-ray can be generated. The generated source is used in proof-of-principle radiograghic imaging of simple specimens.