In-situ alpha spectrometry from air filters at ambient air pressure
The effect of collimation to the alpha-particle energy spectra was investigated for two different types of air filters, when the measurements were performed at ambient air pressure. Significant improvement of the energy resolution is possible if appropriate collimator is used. This is because only t...
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| Veröffentlicht in: | Radiation measurements 2013-06, Vol.53-54, p.65-70 |
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| container_title | Radiation measurements |
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| creator | Pöllänen, R. Peräjärvi, K. Siiskonen, T. Turunen, J. |
| description | The effect of collimation to the alpha-particle energy spectra was investigated for two different types of air filters, when the measurements were performed at ambient air pressure. Significant improvement of the energy resolution is possible if appropriate collimator is used. This is because only those alpha particles are detected entering the detector almost perpendicularly. We also show that although in-situ alpha spectrometry from air filters at ambient air pressure and with good energy resolution is possible, the accumulation of alpha-particle emitting aerosols in the surface of the collimator and the detector may deteriorate the registered spectrum. Therefore, the presence of possible spurious alpha peaks must be taken into account in continuous air monitoring.
► We measured good-resolution alpha spectra from air filters at ambient air pressure. ► Good energy resolution was obtained by collimation. ► Novel spectrum analysis tools facilitates radionuclide identification. |
| doi_str_mv | 10.1016/j.radmeas.2013.01.008 |
| format | Article |
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► We measured good-resolution alpha spectra from air filters at ambient air pressure. ► Good energy resolution was obtained by collimation. ► Novel spectrum analysis tools facilitates radionuclide identification.</description><subject>Aerosols</subject><subject>Air filter</subject><subject>Air filters</subject><subject>Alpha spectrometry</subject><subject>Collimators</subject><subject>Continuous air monitoring</subject><subject>Detectors</subject><subject>Deterioration</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Energy resolution</subject><subject>Exact sciences and technology</subject><subject>Geochronology</subject><subject>In-situ measurements</subject><subject>Isotope geochemistry. 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Geochronology</topic><topic>Semiconductor detector</topic><topic>Spectrometry</topic><topic>Spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pöllänen, R.</creatorcontrib><creatorcontrib>Peräjärvi, K.</creatorcontrib><creatorcontrib>Siiskonen, T.</creatorcontrib><creatorcontrib>Turunen, J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Engineered Materials Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Radiation measurements</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pöllänen, R.</au><au>Peräjärvi, K.</au><au>Siiskonen, T.</au><au>Turunen, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In-situ alpha spectrometry from air filters at ambient air pressure</atitle><jtitle>Radiation measurements</jtitle><date>2013-06-01</date><risdate>2013</risdate><volume>53-54</volume><spage>65</spage><epage>70</epage><pages>65-70</pages><issn>1350-4487</issn><eissn>1879-0925</eissn><abstract>The effect of collimation to the alpha-particle energy spectra was investigated for two different types of air filters, when the measurements were performed at ambient air pressure. Significant improvement of the energy resolution is possible if appropriate collimator is used. This is because only those alpha particles are detected entering the detector almost perpendicularly. We also show that although in-situ alpha spectrometry from air filters at ambient air pressure and with good energy resolution is possible, the accumulation of alpha-particle emitting aerosols in the surface of the collimator and the detector may deteriorate the registered spectrum. Therefore, the presence of possible spurious alpha peaks must be taken into account in continuous air monitoring.
► We measured good-resolution alpha spectra from air filters at ambient air pressure. ► Good energy resolution was obtained by collimation. ► Novel spectrum analysis tools facilitates radionuclide identification.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.radmeas.2013.01.008</doi><tpages>6</tpages></addata></record> |
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| ispartof | Radiation measurements, 2013-06, Vol.53-54, p.65-70 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Aerosols Air filter Air filters Alpha spectrometry Collimators Continuous air monitoring Detectors Deterioration Earth sciences Earth, ocean, space Energy resolution Exact sciences and technology Geochronology In-situ measurements Isotope geochemistry. Geochronology Semiconductor detector Spectrometry Spectroscopy |
| title | In-situ alpha spectrometry from air filters at ambient air pressure |
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