The 8th International Conference on Matter and Radiation at Extremes (ICMRE2025)

90 / 2025-03-13 14:37:34

Application of High-spatial Resolution Quantitative X-ray Image Recording and Reading Technology in ICF

ICF, High-spatial Resolution, Quantitative, X-ray Image Recording and Reading Technology

In the challenging experimental environment of inertial confinement fusion (ICF), characterized by strong electromagnetic pulses and high-neutron yields, conventional X-ray imaging devices, struggle to attain high-spatial resolution and quantitative capabilities simultaneously. This study introduces, for the first time in ICF, a novel principle for recording X-ray images based on radioluminescence. We developed a large-area, high-quality X-ray imaging device using Ag-doped phosphate glass (Ag-PG), which theoretically possesses atomic-level imaging capabilities. Experimental calibrations with synchrotron radiation confirmed the spatial resolution of Ag-PG at 0.7 μm, along with its transmission, linear response, and spectral response, thereby validating its excellent spatial resolution and quantification capabilities. In ICF implosion physics experiments, images recorded with Ag-PG demonstrated enhanced quality compared to a 27 μm resolution X-ray CCD in multi-pinhole hot-spot diagnostic imaging. The observed X-ray image of the capsule ablator self emission using the submicrometer-resolving and quantitative recording technique could be a precise scaling for hohlraum drive symmetry adjustment. This study is significant as it improves both the spatial resolution and the quantitative inversion capabilities of ICF X-ray imaging.