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- W90138395 abstract "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." @default.
- W90138395 created "2016-06-24" @default.
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- W90138395 date "1997-04-02" @default.
- W90138395 modified "2023-10-18" @default.
- W90138395 title "Summary of gamma spectrometry on local air samples from 1985--1995" @default.
- W90138395 doi "https://doi.org/10.2172/495737" @default.
- W90138395 hasPublicationYear "1997" @default.
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