Determination of 226Ra Activity Using Gamma Spectrometry with 226Ra–222Rn Disequilibrium. Issue 2 (August 2015)

• Record Type: Journal Article
• Authors: Li, Qi; Wang, Shilian; Zhao, Yungang; Liu, Shujiang; Fan, Yuanqing; Shi, Jianfang; Jia, Huaimao; Yu, Weixiang
• Is Part Of: Health physics. Volume 109:Issue 2(2015:Aug.)
• Publication Date: 2015-08
• Subjects: Biophysics -- Periodicals; Health Physics -- periodicals; Radiation Protection -- periodicals; Radiotherapy -- periodicals; Medische fysica; Electronic journals; 612.01448
• DOI: 10.1097/HP.0000000000000302
• Languages: English
• ISSNs: 0017-9078

Abstract

<abstract> <title> <x xml:space="preserve">Abstract</x> </title> <sec> <title>Abstract</title> <p>Radium-226 (²²⁶Ra) activity is normally determined indirectly by gamma spectrometry, in particular by measuring the characteristic γ-ray emitted from its progeny (²¹⁴Pb and ²¹⁴Bi) when ²²⁶Ra–²²²Rn secular equilibrium is reached. This article describes a measurement method involving the measurement of ²¹⁴Pb ingrowth. The activity of ²²⁶Ra determined by this method agrees with that measured after ²²⁶Ra–²²²Rn equilibrium. The method of ²¹⁴Pb ingrowth allows rapid and sufficiently accurate determination of ²²⁶Ra activity without the need to wait for ²²⁶Ra–²²²Rn equilibrium.</p> </sec> </abstract>