Measurement of airborne concentrations of radon-220 daughter products by alpha-particle spectrometry

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Description

The decay of naturally occurring uranium-238 and thorium-232 produces radon-222 and radon-220 isotopes which can escape into the atmosphere. If these radon gases become concentrated in air, their daughter products may present an inhalation hazard to man. The airborne concentrations of radon-222 can usually be measured very accurately in the presence of normal airborne concentrations of radon-220 and its daughters. In contrast, the measurements of the airborne concentrations of radon-220 daughters are usually complicated by the presence of radon-222 and its daughters even at normally occurring airborne concentrations. The complications involved in these measurements can be overcome in most situations ... continued below

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Pages: 16

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Kerr, G.D.; Ryan, M.T. & Perdue, P.T. January 1, 1978.

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Description

The decay of naturally occurring uranium-238 and thorium-232 produces radon-222 and radon-220 isotopes which can escape into the atmosphere. If these radon gases become concentrated in air, their daughter products may present an inhalation hazard to man. The airborne concentrations of radon-222 can usually be measured very accurately in the presence of normal airborne concentrations of radon-220 and its daughters. In contrast, the measurements of the airborne concentrations of radon-220 daughters are usually complicated by the presence of radon-222 and its daughters even at normally occurring airborne concentrations. The complications involved in these measurements can be overcome in most situations by using an alpha particle spectrometer to distinguish the activity of radon-222 daughters from that due to radon-220 daughters collected on a filter. A practical spectrometer for field measurements of alpha particle activity on a filter is discussed.

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Pages: 16

Notes

Dep. NTIS, PC A02/MF A01.

Source

  • 11. symposium on radiation instrumentation, San Diego, CA, USA, 17 Jan 1978

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  • Report No.: CONF-780110-1
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5168863
  • Archival Resource Key: ark:/67531/metadc1053510

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 1, 1978

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:08 p.m.

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Kerr, G.D.; Ryan, M.T. & Perdue, P.T. Measurement of airborne concentrations of radon-220 daughter products by alpha-particle spectrometry, article, January 1, 1978; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1053510/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.