首页   按字顺浏览 期刊浏览 卷期浏览 A simple system for radon‐in‐air concentration determinations
A simple system for radon‐in‐air concentration determinations

 

作者: A. J. Howard,   S. E. Carroll,   W. P. Strange,  

 

期刊: American Journal of Physics  （AIP Available online 1991）
卷期: Volume 59, issue 6  

页码: 544-550

 

ISSN:0002-9505

 

年代: 1991

 

DOI:10.1119/1.16817

 

出版商: American Association of Physics Teachers

 

关键词: RADON;ELECTROSTATIC PRECIPITATORS;EFFICIENCY;CALIBRATION;POLONIUM 218;ALPHA DECAY;DAUGHTER PRODUCTS;RADON 222;RADIONUCLIDE MIGRATION;AIR;RADIOCHEMICAL ANALYSIS;AIR POLLUTION MONITORING;RADIOACTIVITY

 

数据来源: AIP

 

摘要:

Electrostatic precipitation within a 20.4‐lcontainer onto a solid‐state charged‐particle detector is employed to simultaneously collect and detect radon‐decay daughter ions. Essentially complete isolation of the 6003‐keV α particles associated with21884Po decay, for which the half‐life is 3.05 min, allows radon concentrations in clean, dry air of 4 pCi/lto be determined in 15 min of operation with ∼11% statistical uncertainty. A detailed description of this simple system is given, and its absolute detection efficiency is measured as a function of precipitation voltage and relative humidity.

 

点击下载:  PDF (690KB)



返 回