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Article: A Simple Rn-220 Chamber for the Calibration of Passive and Integrated Rn-220 Dosimeter

TitleA Simple Rn-220 Chamber for the Calibration of Passive and Integrated Rn-220 Dosimeter
用于被動積分測(220)Rn劑量計刻度的簡易(220)Rn室
Authors
KeywordsThoron
Thoron chamber
Scintillation cell
Issue Date2002
Publisher中國原子能科學研究院. The Journal's web site is located at http://www.cnki.com.cn/Journal/C-C3-YZJS.htm
Citation
原子能科學技術, 2002, v. 36 n. 1, p. 89-92 How to Cite?
Atomic Energy Science and Technology, 2002, v. 36 n. 1, p. 89-92 How to Cite?
Abstract用有機玻璃板制作了一 3 5 0mm× 2 5 0mm× 1 80mm的2 2 0 Rn積累箱 ,用特制的閃爍室測量2 2 0 Rn室內2 2 0 Rn水平 ,閃爍室測量2 2 0 Rn的刻度因子是用標準氡源刻度其對氡及其子體釋放α粒子的探測效率 ,并經能量修正后得到。2 2 0 Rn源和循環氣流混合后以約 1 3L·min-1充進積累箱 ,其2 2 0 Rn水平通過充源回路添加不同體積的延遲箱和氣體流量的控制加以調節。在充源和循環氣流條件不變時 ,測量充源孔和循環孔所在兩個側面上不同位置采樣孔的2 2 0 Rn水平 ,測量結果的相對標準偏差為 0 3 % ;每 1h測量一次 ,連續 1 0h在同一采樣孔采樣 ,測量結果的相對標準偏差為 1 0 %。系統總不確定度小于 5 6%。 Abstract: A 220 Rn accumulation box w ith the size of 350 mm ×250 mm ×180 mm is made of perspex plate .220Rn level in the chamber is moni tored by a special scintillation cell.The calibration facto r for 220 Rn concent ration measurement is determined by the detection eff iciency of αparticles emit ting f rom radon and its progenies .220Rn g as and circulation air are mixed together before entering the accumulation box with a flow rate of about 13 L min .220 Rn concentration can be changed by adding different volumes of delay boxes o r by controlling gas flow rate in the 220Rn input circuit .The simple 220 Rn chamber has a good stabili ty of concentration w ith deviations of 1 .0 %during 10 h continuous measurement , and a good unifo rmity w ith deviations of only 0 .3 %.The uncertainty of the system is less than 5 .6 %.
Persistent Identifierhttp://hdl.handle.net/10722/87978
ISSN
2015 SCImago Journal Rankings: 0.234

 

DC FieldValueLanguage
dc.contributor.authorXiao, DTen_HK
dc.contributor.authorPan, ZQen_HK
dc.contributor.authorLing, Qen_HK
dc.contributor.authorDong, LCen_HK
dc.contributor.authorLeung, JKCen_HK
dc.date.accessioned2010-09-06T09:36:58Z-
dc.date.available2010-09-06T09:36:58Z-
dc.date.issued2002en_HK
dc.identifier.citation原子能科學技術, 2002, v. 36 n. 1, p. 89-92en_HK
dc.identifier.citationAtomic Energy Science and Technology, 2002, v. 36 n. 1, p. 89-92-
dc.identifier.issn1000-6931en_HK
dc.identifier.urihttp://hdl.handle.net/10722/87978-
dc.description.abstract用有機玻璃板制作了一 3 5 0mm× 2 5 0mm× 1 80mm的2 2 0 Rn積累箱 ,用特制的閃爍室測量2 2 0 Rn室內2 2 0 Rn水平 ,閃爍室測量2 2 0 Rn的刻度因子是用標準氡源刻度其對氡及其子體釋放α粒子的探測效率 ,并經能量修正后得到。2 2 0 Rn源和循環氣流混合后以約 1 3L·min-1充進積累箱 ,其2 2 0 Rn水平通過充源回路添加不同體積的延遲箱和氣體流量的控制加以調節。在充源和循環氣流條件不變時 ,測量充源孔和循環孔所在兩個側面上不同位置采樣孔的2 2 0 Rn水平 ,測量結果的相對標準偏差為 0 3 % ;每 1h測量一次 ,連續 1 0h在同一采樣孔采樣 ,測量結果的相對標準偏差為 1 0 %。系統總不確定度小于 5 6%。 Abstract: A 220 Rn accumulation box w ith the size of 350 mm ×250 mm ×180 mm is made of perspex plate .220Rn level in the chamber is moni tored by a special scintillation cell.The calibration facto r for 220 Rn concent ration measurement is determined by the detection eff iciency of αparticles emit ting f rom radon and its progenies .220Rn g as and circulation air are mixed together before entering the accumulation box with a flow rate of about 13 L min .220 Rn concentration can be changed by adding different volumes of delay boxes o r by controlling gas flow rate in the 220Rn input circuit .The simple 220 Rn chamber has a good stabili ty of concentration w ith deviations of 1 .0 %during 10 h continuous measurement , and a good unifo rmity w ith deviations of only 0 .3 %.The uncertainty of the system is less than 5 .6 %.-
dc.languagechien_HK
dc.publisher中國原子能科學研究院. The Journal's web site is located at http://www.cnki.com.cn/Journal/C-C3-YZJS.htmzh_HK
dc.relation.ispartof原子能科學技術en_HK
dc.relation.ispartofAtomic Energy Science and Technology-
dc.subjectThoron-
dc.subjectThoron chamber-
dc.subjectScintillation cell-
dc.titleA Simple Rn-220 Chamber for the Calibration of Passive and Integrated Rn-220 Dosimeteren_HK
dc.title用于被動積分測(220)Rn劑量計刻度的簡易(220)Rn室-
dc.typeArticleen_HK
dc.identifier.emailLeung, JKC: jkcleung@hku.hken_HK
dc.identifier.authorityLeung, JKC=rp00732en_HK
dc.identifier.doi10.3969/j.issn.1000-6931.2002.01.021-
dc.identifier.hkuros112138en_HK
dc.identifier.volume36-
dc.identifier.issue1-
dc.identifier.spage89-
dc.identifier.epage92-
dc.publisher.placeChina-

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