File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: A study of the polyethylene membrane used in diffusion chambers for radon gas concentration measurements

TitleA study of the polyethylene membrane used in diffusion chambers for radon gas concentration measurements
Authors
KeywordsDiffusion chamber
Polyethylene membrane
Radon and thoron gas concentration
Issue Date2007
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/nimb
Citation
Nuclear Instruments And Methods In Physics Research, Section B: Beam Interactions With Materials And Atoms, 2007, v. 263 n. 1 SPEC. ISS., p. 311-316 How to Cite?
AbstractSolid-state nuclear track detectors (SSNTDs) in diffusion chambers have been routinely used for long-term measurements of radon gas concentrations. In usual practice, a filter is added across the top of the diffusion chamber to stop the progeny from entering. Thoron can also be deterred from entering the diffusion chamber by using a polyethylene (PE) membrane. However, the thickness of the PE membrane is rarely specified in the literature. In this paper, we will present our experimental results for a radon exposure that the number of alpha-particle tracks registered by the LR 115 SSNTD in a Karlsruhe diffusion chamber covered with one layer of PE membrane is actually enhanced. This is explained by enhanced deposition of radon progeny on the outside surface of the PE membrane and the insufficient thickness of the PE membrane to stop the alpha particles emitted from these deposited radon progeny to reach the SSNTD. We will present the PE thickness which can stop the alpha particles emitted from the deposited radon or thoron progeny. For the "twin diffusion chambers method", one of the diffusion chambers is covered with PE membranes. The optimal number of thickness of PE membranes will be determined, which allows the largest amount of radon gas to diffuse into the diffusion chamber while at the same time screening out the largest amount of thoron gas. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/80593
ISSN
2015 Impact Factor: 1.389
2015 SCImago Journal Rankings: 0.707
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, SYYen_HK
dc.contributor.authorNikezic, Den_HK
dc.contributor.authorLeung, JKCen_HK
dc.contributor.authorYu, KNen_HK
dc.date.accessioned2010-09-06T08:08:09Z-
dc.date.available2010-09-06T08:08:09Z-
dc.date.issued2007en_HK
dc.identifier.citationNuclear Instruments And Methods In Physics Research, Section B: Beam Interactions With Materials And Atoms, 2007, v. 263 n. 1 SPEC. ISS., p. 311-316en_HK
dc.identifier.issn0168-583Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/80593-
dc.description.abstractSolid-state nuclear track detectors (SSNTDs) in diffusion chambers have been routinely used for long-term measurements of radon gas concentrations. In usual practice, a filter is added across the top of the diffusion chamber to stop the progeny from entering. Thoron can also be deterred from entering the diffusion chamber by using a polyethylene (PE) membrane. However, the thickness of the PE membrane is rarely specified in the literature. In this paper, we will present our experimental results for a radon exposure that the number of alpha-particle tracks registered by the LR 115 SSNTD in a Karlsruhe diffusion chamber covered with one layer of PE membrane is actually enhanced. This is explained by enhanced deposition of radon progeny on the outside surface of the PE membrane and the insufficient thickness of the PE membrane to stop the alpha particles emitted from these deposited radon progeny to reach the SSNTD. We will present the PE thickness which can stop the alpha particles emitted from the deposited radon or thoron progeny. For the "twin diffusion chambers method", one of the diffusion chambers is covered with PE membranes. The optimal number of thickness of PE membranes will be determined, which allows the largest amount of radon gas to diffuse into the diffusion chamber while at the same time screening out the largest amount of thoron gas. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/nimben_HK
dc.relation.ispartofNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atomsen_HK
dc.rightsNuclear Instruments & Methods in Physics Research Section B Beam Interactions with Materials and Atoms. Copyright © Elsevier BV.en_HK
dc.subjectDiffusion chamberen_HK
dc.subjectPolyethylene membraneen_HK
dc.subjectRadon and thoron gas concentrationen_HK
dc.titleA study of the polyethylene membrane used in diffusion chambers for radon gas concentration measurementsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0168-9002&volume=263&spage=311&epage=316&date=2007&atitle=A+study+of+the+polyethylene+membrane+used+in+diffusion+chambers+for+radon+gas+concentration+measurementsen_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.nimb.2007.04.120en_HK
dc.identifier.scopuseid_2-s2.0-34548841681en_HK
dc.identifier.hkuros137809en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548841681&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume263en_HK
dc.identifier.issue1 SPEC. ISS.en_HK
dc.identifier.spage311en_HK
dc.identifier.epage316en_HK
dc.identifier.isiWOS:000250798000064-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLeung, SYY=55168680800en_HK
dc.identifier.scopusauthoridNikezic, D=35614145500en_HK
dc.identifier.scopusauthoridLeung, JKC=24080627200en_HK
dc.identifier.scopusauthoridYu, KN=7403385896en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats