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目前锗半导体探测器的应用受到很大重视,用以解决一系列地质、物探问题,首先是用于分析岩石的元素组成。但直到目前为止,半导体探测器还很少用于测井,其原因是冷却系统的设计比较复杂。冷却系统应该使半导体探测器在液氮温度下(78°K)干封闭的探头体积内保持6—8小时。在文献[1,2]中推荐采用一般的液氮杜瓦瓶来解决这个问题,其液氮蒸气或排入乾孔的空隙中或通过一个专用
At present, the application of germanium semiconductor detector has received great attention to solve a series of geophysical and geophysical problems. The first is to analyze the elemental composition of rock. Until now, however, semiconductor detectors have rarely been used for well logging because of the complexity of cooling system designs. The cooling system should keep the semiconductor detector within 6-8 hours of dry closed probe volume at liquid nitrogen temperature (78 ° K). In the literature [1, 2] it is recommended to use a typical liquid nitrogen dewar to solve this problem, the liquid nitrogen vapor or into the pores of dry holes or through a dedicated