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Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy

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dc.contributor.author Brunke, EG en_US
dc.contributor.author Labuschagne, C en_US
dc.contributor.author Parker, B en_US
dc.contributor.author Van der Spuy, D en_US
dc.contributor.author Whittlestone, S en_US
dc.date.accessioned 2007-01-11T11:29:50Z en_US
dc.date.accessioned 2007-06-07T10:03:08Z
dc.date.available 2007-01-11T11:29:50Z en_US
dc.date.available 2007-06-07T10:03:08Z
dc.date.issued 2002-05 en_US
dc.identifier.citation Brunke, EG et al. 2002. Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy. Atmospheric environment, vol 36(13), pp 2257-2262 en_US
dc.identifier.issn 1352-2310 en_US
dc.identifier.uri http://hdl.handle.net/10204/1374 en_US
dc.identifier.uri http://hdl.handle.net/10204/1374
dc.description.abstract Specific factors of a baseline Rn-222 detector installed at Cape Point, South Africa, were studied with the aim of improving its performance. Direct sunlight caused air turbulence within the instrument, resulting in 13.6% variability of the calibration factor. Shading the instrument eliminated this effect. A residual temperature dependence of the calibration factor was reduced to negligible levels with an improved photomultiplier tube. A superior detector head permits field servicing of the instrument, and has reduced one component of the instrumental background by a factor of 2. The other component probably constitutes thoron emissions from the stainless steel walls. The detection limit of the instrument could be reduced from its current 33 to 20 mBq m(-3) if the thoron were to be eliminated. en_US
dc.format.extent 129916 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en en_US
dc.publisher Pergamon-Elsevier Science Ltd en_US
dc.rights Copyright: Pergamon-elsevier science Ltd en_US
dc.subject Rn-222 detector en_US
dc.subject Radon en_US
dc.subject Photomultiplier en_US
dc.subject Thoron en_US
dc.subject Environmental sciences en_US
dc.subject Mateorology en_US
dc.subject Atmospheric sciences en_US
dc.title Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy en_US
dc.type Article en_US
dc.identifier.apacitation Brunke, E., Labuschagne, C., Parker, B., Van der Spuy, D., & Whittlestone, S. (2002). Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy. http://hdl.handle.net/10204/1374 en_ZA
dc.identifier.chicagocitation Brunke, EG, C Labuschagne, B Parker, D Van der Spuy, and S Whittlestone "Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy." (2002) http://hdl.handle.net/10204/1374 en_ZA
dc.identifier.vancouvercitation Brunke E, Labuschagne C, Parker B, Van der Spuy D, Whittlestone S. Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy. 2002; http://hdl.handle.net/10204/1374. en_ZA
dc.identifier.ris TY - Article AU - Brunke, EG AU - Labuschagne, C AU - Parker, B AU - Van der Spuy, D AU - Whittlestone, S AB - Specific factors of a baseline Rn-222 detector installed at Cape Point, South Africa, were studied with the aim of improving its performance. Direct sunlight caused air turbulence within the instrument, resulting in 13.6% variability of the calibration factor. Shading the instrument eliminated this effect. A residual temperature dependence of the calibration factor was reduced to negligible levels with an improved photomultiplier tube. A superior detector head permits field servicing of the instrument, and has reduced one component of the instrumental background by a factor of 2. The other component probably constitutes thoron emissions from the stainless steel walls. The detection limit of the instrument could be reduced from its current 33 to 20 mBq m(-3) if the thoron were to be eliminated. DA - 2002-05 DB - ResearchSpace DP - CSIR KW - Rn-222 detector KW - Radon KW - Photomultiplier KW - Thoron KW - Environmental sciences KW - Mateorology KW - Atmospheric sciences LK - https://researchspace.csir.co.za PY - 2002 SM - 1352-2310 T1 - Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy TI - Cape Point GAW Station Rn-222 detector: factors affecting sensitivity and accuracy UR - http://hdl.handle.net/10204/1374 ER - en_ZA


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