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Article: Equilibrium factor determination using SSNTDs

TitleEquilibrium factor determination using SSNTDs
Authors
KeywordsEquilibrium factor
Long-term measurements
LR 115
Radon progeny
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeas
Citation
Radiation Measurements, 2008, v. 43 SUPPL.1, p. S357-S363 How to Cite?
AbstractThe proxy equilibrium factor F p was recently proposed by Nikezic et al. [2004. Theoretical basis for long-term measurements of equilibrium factor using LR 115 detector. Appl. Radiat. Isot. 61, 1431-1435] and Yu et al. [2005. Long-term measurements of radon progeny concentrations with solid state nuclear track detectors. Radiat. Meas. 40, 560-568] for long-term passive monitoring of the equilibrium factor F for short-lived 222Rn progeny. In the present paper, we further look into the details for the F p method and study the potential factors affecting the measurements of F using this technique. These factors include (1) the removed active layer of the LR 115 detector, (2) the presence of 220Rn in the ambient environment, and (3) the deposition of dust particles on the LR 115 detector. The corresponding results are: (1) the removed active layer thickness of the LR 115 detector is a very critical parameter in determining F p and hence F; (2) the presence of thoron in the ambient environment will affect the track densities on the bare LR 115 detector but can be corrected for using the partial sensitivities to thoron; and (3) deposition of dust particles on the bare LR 115 detectors normally will not have significant effects. In addition, a mini-survey of radon and thoron gas concentration and the radon equilibrium factor in different indoor environments has been carried out in different seasons. The conclusion is that the use of an assumed constant F value can result in inaccurate determinations of the effective dose; therefore, actual (long-term) measurements of the F values should be made. © 2008 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/80509
ISSN
2015 Impact Factor: 1.071
2015 SCImago Journal Rankings: 0.592
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, KNen_HK
dc.contributor.authorLeung, SYYen_HK
dc.contributor.authorNikezic, Den_HK
dc.contributor.authorLeung, JKCen_HK
dc.date.accessioned2010-09-06T08:07:14Z-
dc.date.available2010-09-06T08:07:14Z-
dc.date.issued2008en_HK
dc.identifier.citationRadiation Measurements, 2008, v. 43 SUPPL.1, p. S357-S363en_HK
dc.identifier.issn1350-4487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80509-
dc.description.abstractThe proxy equilibrium factor F p was recently proposed by Nikezic et al. [2004. Theoretical basis for long-term measurements of equilibrium factor using LR 115 detector. Appl. Radiat. Isot. 61, 1431-1435] and Yu et al. [2005. Long-term measurements of radon progeny concentrations with solid state nuclear track detectors. Radiat. Meas. 40, 560-568] for long-term passive monitoring of the equilibrium factor F for short-lived 222Rn progeny. In the present paper, we further look into the details for the F p method and study the potential factors affecting the measurements of F using this technique. These factors include (1) the removed active layer of the LR 115 detector, (2) the presence of 220Rn in the ambient environment, and (3) the deposition of dust particles on the LR 115 detector. The corresponding results are: (1) the removed active layer thickness of the LR 115 detector is a very critical parameter in determining F p and hence F; (2) the presence of thoron in the ambient environment will affect the track densities on the bare LR 115 detector but can be corrected for using the partial sensitivities to thoron; and (3) deposition of dust particles on the bare LR 115 detectors normally will not have significant effects. In addition, a mini-survey of radon and thoron gas concentration and the radon equilibrium factor in different indoor environments has been carried out in different seasons. The conclusion is that the use of an assumed constant F value can result in inaccurate determinations of the effective dose; therefore, actual (long-term) measurements of the F values should be made. © 2008 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radmeasen_HK
dc.relation.ispartofRadiation Measurementsen_HK
dc.subjectEquilibrium factoren_HK
dc.subjectLong-term measurementsen_HK
dc.subjectLR 115en_HK
dc.subjectRadon progenyen_HK
dc.titleEquilibrium factor determination using SSNTDsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1350-4487&volume=43&spage=S357&epage=S363&date=2008&atitle=Equilibrium+factor+determination+using+SSNTDsen_HK
dc.identifier.emailLeung, JKC: jkcleung@hku.hken_HK
dc.identifier.authorityLeung, JKC=rp00732en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.radmeas.2008.03.024en_HK
dc.identifier.scopuseid_2-s2.0-48549101544en_HK
dc.identifier.hkuros152717en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-48549101544&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issueSUPPL.1en_HK
dc.identifier.spageS357en_HK
dc.identifier.epageS363en_HK
dc.identifier.isiWOS:000258953700077-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYu, KN=7403385896en_HK
dc.identifier.scopusauthoridLeung, SYY=55168680800en_HK
dc.identifier.scopusauthoridNikezic, D=35614145500en_HK
dc.identifier.scopusauthoridLeung, JKC=24080627200en_HK

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