机构地区: 成都理工大学
出 处: 《核电子学与探测技术》 2010年第7期994-997,共4页
摘 要: 介绍一种快速氡浓度检测仪的设计方法。通过对^(222)Rn、^(220)Rn及它们的子体^(218)Po(RaA)、^(214)Pb(RaB)、^(214)Bi(RaC)、^(214)Po(RaC')、^(216)Po、^(212)Po的半衰期的分析及氡浓度测量原理分析,进行采取增加导管长度、两级过滤器的设计方法,将^(222)Rn和^(220)Rn已经衰变子体进行滤除,采用正高压半球形采集仓增加了对氡子体的吸附能力,提高了探测效率。还给出了电子学硬件框图和嵌入式软件流程图。最后给出了与RAD7对比测试结果。 It introduces how to design a radon concentration fast-measuring instrument. And it also introduces Half-life of ^222Rn.^220 Rn and their daughters: ^218Po (RaA)^214 Pb (RaB) ^214 Bi (RaC). ^214po (RaC') ^216 Po、^212 Po, and analyzes the principle of radon detection. More long catheter and two filters are used to filter daughters of ^222Rn、^220Rn in the gas. At the same time, hemispherical high-pressure storage is used to enhance the absorption capacity of daughters. And electronics hardware block diagram and embedded software flow chart are introduced. At the end, the test results compared with the RAD7 is displayed.
领 域: [核科学技术]