多丝正比计数器的技术改造

Transformation of a Multi-wire Proportional Counter

采用单片机和集成电路重建多丝正比计数器测控系统,改进多丝正比室及气流系统的结构,有效改善和提升了多丝正比计数器的技术性能,试验结果表明,技术改造后的多丝正比计数器,探测效率达到95%以上,测量重复性小于1%,8 h稳定性优于0.5%,可应用于α、β放射性平面源和环境样品的测量。

Rebuilt a multi - wire proportional counter measurement and control system using single - chip micro- processor and integrated circuits, optimized the structure of the multi - wire proportional chamber and air flow system, effectively improved and elevated the technical performance of multi - wire proportional counter, the re- sult indicated that after this transformation, the detection efficiency is more than 95% , the measurement repeatability is less than 1% ,the stability in 8 hours is better than 0.5% , this instrument is qualified for the measurement of α、β radioactive plane source and environment samples.