Affiliation:
1. Radon Key Laboratory of Hunan Province/School of Nuclear Science and Technology, University of South China, Hengyang 421001, P.R. China
Abstract
Abstract
The method of 227Ac extraction and purification from high-grade uranium ore and the test results of solid 219Rn
source made from 227Ac are reported in this paper. With five years of follow-up monitoring, radiochemical purity of
227Ac and the emanation power of solid 219Rn source has been checked by emanation method and γ-spectrometry, the results showed that 228Th, 231Pa and 226Ra have been effectively removed and
the emanation power of 219Rn source is about 80%. The long-term test results also showed that the
219Rn emanation rate remains stable in a wide air humidity range (40% ∼ 90%). Though the
219Rn source has not been accurately calibrated yet, it has been applied in the research for delay coincidence measurement
of 223Ra.
Subject
Physical and Theoretical Chemistry
Cited by
1 articles.
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