High sensitivity gamma spectrometry of air samples near SRS during 1985-1995

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High sensitivity gamma analysis of off-site air samples near the Savannah River Site (SRS) is achieved by collecting large volume air samples for analysis by ultra-low-level gamma spectrometry. A review of the 1985-1995 measurements has highlighted local and distant releases of man-made radionuclides, along with cosmogenic radionuclides which correlate with both solar and seasonal phenomena. Measurements typically involve 2-day air collection of a 70,000 m{sup 3} sample on a 51 cm x 51 cm cellulose filter using a high-capacity pump. Short-lived radon background activity is allowed to decay a few days, and then the filter is configured into a smaller ... continued below

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9 p.

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Winn, W.G. & Cadieux, J.R. July 1, 1997.

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Description

High sensitivity gamma analysis of off-site air samples near the Savannah River Site (SRS) is achieved by collecting large volume air samples for analysis by ultra-low-level gamma spectrometry. A review of the 1985-1995 measurements has highlighted local and distant releases of man-made radionuclides, along with cosmogenic radionuclides which correlate with both solar and seasonal phenomena. Measurements typically involve 2-day air collection of a 70,000 m{sup 3} sample on a 51 cm x 51 cm cellulose filter using a high-capacity pump. Short-lived radon background activity is allowed to decay a few days, and then the filter is configured into a smaller calibrated volume and counted 1-3 days on a 30 percent-efficient HPGe in the Ultra-Low-Level Counting Facility. Representative detection limits for this method are shown in Table 1, and even lower limits are achievable by counting on the low-background 160 percent-efficient HPGe of the Underground Counting Facility.

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9 p.

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OSTI as DE97060198

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  • 1997 American Nuclear Society (ANS) winter meeting, Albuquerque, NM (United States), 16-20 Nov 1997

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  • Other: DE97060198
  • Report No.: WSRC-MS--97-0449
  • Report No.: CONF-971125--3
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/495737 | External Link
  • Office of Scientific & Technical Information Report Number: 554201
  • Archival Resource Key: ark:/67531/metadc693656

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 9, 2016, 5:52 p.m.

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Winn, W.G. & Cadieux, J.R. High sensitivity gamma spectrometry of air samples near SRS during 1985-1995, article, July 1, 1997; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc693656/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.