由“空心原子”产生硬Ｘ射线脉冲高强度、短波长（硬）Ｘ射线的产生一直是研究人员难以捉摸的目标。生物和材料科学的研究人员希望把这种Ｘ射线用来高分辨地探索原子或分子水平的物质，而国防科学家则梦想用硬Ｘ射线来摧毁射来的弹道导弹。最近伊利诺思大学物理系Ｃ．Ｋ．... Producing hard X-ray pulses from “hollow atoms” High-intensity, short-wavelength (hard) X-ray production has been an elusive goal of researchers. Researchers at the Department of Biological and Materials Sciences want to use the X-rays to explore atoms or molecules at high resolution, while defense scientists dream of destroying the incoming ballistic missiles with hard X-rays. Recently the University of Illinois at Department of Physics C. K. ...