A novel spherically bent crystal analyzer was developed based on the X-ray Bragg diffraction theory to study and diagnose the distribution, stability and the shape of a plasma of pellet implosion in the Inertial Confinement Fusion (ICF). The key component of the crystal analyzer is a spherically bent α-quartz crystal with a radius of 143. 3 mm. The spherically bent α-quartz crystal was used to carried out a monochromatic X-ray backlighting imaging experiment in the Research Center of Laser Fusion, China Academy of Engineering Physics(CAEP). The clear two-dimensional monochrome X-ray backlighting image of a chrome target was obtained on an imaging plane of 40 mm×30 mm. By analyzing the spectral information of a sagittal direction in the experiment, it is demonstrated that the spherically bent α-quartz crystal shows his spatial resolution to be 83. 3 μm and it could be used for research of the monochromatic X-ray backlighting imaging.%基于X射线布喇格衍射理论,研制了球面弯曲晶体分析器,用于研究和诊断惯性约束聚变的聚爆靶等离子体的形状、分布及稳定性.分析器的核心器件是石英球面弯晶,弯曲晶体半径为143.3 mm.首次利用石英球面弯曲晶体进行了单色X射线背光成像实验.采用接收面积为40 mm×30 mm的磷屏成像板作为接收装置,得到了清晰的铬靶单色X射线二维背光聚焦成像.对所得实验弧矢方向区域谱线的分析显示,石英球面弯曲晶体得到的X射线背光成像的空间分辨率约为83.3 μm.实验结果表明该球面弯曲晶体适合于X射线的背光诊断研究.
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