Low level noble gas measurements in the field and laboratory in support of the Comprehensive Nuclear-Test-Ban Treaty.
Over 300 daily environmental radioxenon samples were analyzed using French developed SPALAX for automatic sample preparation including high-resolution gamma-spectrometry. The 133Xe sensitivity was significantly better than 1 mBq/m3 (specified criterion for Comprehensive Nuclear-Test-Ban Treaty verification). Radioxenon analysis was extended to include the X-ray region by improved detector window, sample cell design, efficiency calibration, line shape fitting and background analysis. The resulting analysis offers a 4-16 fold improvement in sensitivity for 133mXe and 131mXe, respectively.
Stocki
Trevor J
TJ
Radiation Protection Bureau, 775 Brookfield Rd., A.L. 6302D1, Ottawa, Ont., Canada K1A 1C1. trevor_stocki@hc-sc.gc.ca
Bean
Marc
M
Ungar
R Kurt
RK
Toivonen
Harri
H
Zhang
Weihua
W
Whyte
Jeff
J
Meyerhof
Dorothy
D