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以目前国际上极为活跃开展的暗物质探测、无中微子双β衰变研究为例,评述了高纯锗探测器的重要性及其广泛的应用前景。介绍了己开展的高纯锗单晶、探测器制备的关键技术研究进展:合作单位已研制出了用于高纯锗单晶材料制备的区熔炉、单晶炉;并制备出直径为20～50 cm、纯度为12N(<4×1011atoms/cm3)、位错<5000 atoms/cm2的锗单晶;掌握了高纯锗探测器(平面型、同轴型)制备的关键技术,用进口高纯锗单晶材料制备出的同轴型高纯锗探测器对γ射线的能量分辨率及探测效率均达到进口产品指标,使用自制的12N高纯锗单晶材料己制备出平面型高纯锗探测器。呼吁加速高纯锗研制的自主创新步伐,尽早实现其国产化目标。
Taking the extremely active exploration of dark matter and non-neutrino double β decay in the world as an example, the importance of high purity germanium detector and its extensive application foreground are reviewed. The research progress on the key technologies of the high purity germanium single crystals and detectors has been introduced: the cooperation unit has developed zone melting furnace and single crystal furnace for the preparation of high purity germanium single crystal material; 50 cm, purity of 12N (<4 × 1011 atoms / cm3), dislocation <5000 atoms / cm2 of germanium single crystal; mastered the key technologies of high purity germanium detector (planar, coaxial) Pure germanium single-crystal material prepared coaxial high-purity germanium detector for γ-ray energy resolution and detection efficiency have reached the target of imported products, the use of homemade 12N high purity germanium single crystal material has been prepared planar high purity germanium detector. Call for accelerating the pace of independent innovation in the development of high-purity germanium to achieve its localization goal as soon as possible.