| 摘要 |
In order to construct highly sensitive, accurate and at the same time cost-effective radiation meters which can cover the future requirement of many private citizens, public authorities and institutes for a detection apparatus, which is reliable, compact and can be operated easily, for radioactive radiation in the environment and objects of daily life, an optimised detector is described which can be manufactured easily and has the best possible sensitivity for its type. The detector operates on the principle of the known proportional counting tube. A hard light-metal alloy is preferably used for the radiation-permeable housing wall, and heavy-metal alloys are preferably used for the other housing walls. All the structural parts can be produced using the manufacturing methods proven in the metal industry and can likewise be joined in a hermetically sealed manner using proven methods. The counting wire is mounted without springs or other devices which serve to maintain its mechanical tension. To this end, the materials of the housing and counting wire are matched to one another with respect to thermal expansion and elasticity range. <IMAGE>
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