【摘要】 本文介绍建立低水平(防护级和环境级)X、γ剂量仪表校准用的实验室标准的方法和结果。它是用中国计量科学研究院校准过的 NPL-2560治疗级次级标准,通过一个传递电离室(NF0.6cc),校准 NE30cc 和自制的 MCD-100cc 电离室;并以后者作为实验室标准。对 NE30cc(宽谱)、NE30cc(窄谱)和 MCD-100cc(窄谱)校准的总不确定度(99%置信度)分别为2.26、3.14和3.12%更多还原

【Abstract】 This paper presents the methods and results of establishinglaboratory standards for dosimeters of protection and environmentalprotection levels by tracing back to the secondary dosimetry standardNPL-2560 of therapy level authorized by the National Institute of Metrology,with a transfer ionization chamber(NE0 6cc,No.3839).Ionizationchambers NE 30cc and home made MCD-100cc,are calibrated with thetransfer ionization chamber and then used as the laboratory standard.Thetotal uncertainties(99% confidence)are 2.26% for NE 30cc(wide spectra),3.14% for NE 30cc(narrow spectra)and 3.12% for MCD-100cc,respecti-vely.更多还原