多丝正比计数器的技术改造  

Transformation of a Multi-wire Proportional Counter

作　　者：任家富[1] 林业[1] 徐一鹤[2] 唐方东[2] 何林锋[2] 方方[1] 陶永莉[1] 

机构地区：[1]成都理工大学,成都610059 [2]上海市计量测试技术研究院,上海201203

出　　处：《核电子学与探测技术》2012年第11期1317-1319,共3页Nuclear Electronics & Detection Technology

摘　　要：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.

关 键 词：多丝正比计数器 放射性测量 电荷灵敏放大器 程控高压 单片机 

分 类 号：TL82[核科学技术—核技术及应用]