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在神光Ⅲ主机激光装置上,采用单端带激光注入孔(LEH)的桶状黑腔,利用极区分幅相机和极区附近 X光条纹相机获得黑腔内壁附近和LEH 附近等离子体的X射线发射时空演化图像,进而研究LEH 堵孔特性.X光图像清晰地展示了激光光斑移动、LEH 附近等离子体缩孔和堵孔过程,为优化 LEH 尺寸提供了实验依据.“,”On Shenguang Ⅲ laser facility,32 laser beams were symmetrically injected a gas-filled hohlraum to create plas-ma situation which is close to the ignition condition.An X-ray framing camera on the polar station and an X-ray streak camera near the pole were utilized to obtain the temporal and spacial evolution X-ray images of the plasma from the hohlraum wall and near the laser entrance hole(LEH),which were used to analyse the LEH closure feature of the hohlraum with various LEH size. The experimental results clearly demonstrated the evolution of laser spot motion,plasma expanding near the LEH and closure of the LEH,which supplied the foundation to optimize the LEH dimension.