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由金硅面垒半导体探测器和~(235)U靶箔组成的探测器,可用来探测热中子引起的裂变碎片,称为固态裂变室。固态裂变室有两种结构,一种是把~(235)U在真空中直接喷涂在探测器金层上,其结构简单,体积小,在空气中工作,具有很高的空间分辨率,可方便地用于反应堆内测量热中子的空间分布。另一种结构是将~(235)U喷涂在薄膜衬底上,靶和探测器都放在小真空室内,靶和探测器间要有一定要求的准直孔。这种结构的探测器
The detector, consisting of a gold-silicon surface barrier semiconductor detector and a ~ (235) U target foil, can be used to detect fission fragments caused by thermal neutrons and is called a solid-state fission chamber. Solid fission chamber has two structures, one is the ~ (235) U in the vacuum spray directly on the detector gold layer, its simple structure, small size, working in the air, with high spatial resolution, can be Conveniently used for measuring the spatial distribution of thermal neutrons within a reactor. Another structure is the ~ (235) U sprayed on the film substrate, the target and the detector are placed in a small vacuum chamber, the target and the detector must have some required alignment holes. This structure of the detector