Standarization of Rn-222 at the Australian Radiation Laboratory
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چکیده
منابع مشابه
Standardization of Rn-222 at the Australian Radiation Laboratory
The standardization of Rn-222 at the Australian Radiation Laboratory involves the calibration of scintillation cells by two methods using standard Ra-226 solutions traceable to the National Institute of Standards and Technology. One of these methods, namely the injection method, involves direct transfer of Rn-222 into a scintillation cell. In the other method, known as the volumetric method, th...
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[1] We used Rn and Ra measured in the Upper Gulf of Thailand to estimate Rn atmospheric evasion across the water-air interface. The Chao Phraya estuary represents a steady-state source of these tracers and we looked at their horizontal distribution on a transect leading away from the estuary into the Gulf. The isotopes Rn and Ra have very similar half-lives and are affected in the same manner b...
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We have carried out convenient and highly sensitive radon measurement using absorption to means of a detecting active charcoal and a liquid scintillation spectrometer, Packard Pico-rad System. The α and β radioactivities of its decay products originated from radon gas absorbed detector exposed to air were measured. Its detection limit is 1.7Bq/m in air with an accuracy of about 10% on 200 minit...
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ژورنال
عنوان ژورنال: Journal of Research of the National Institute of Standards and Technology
سال: 1990
ISSN: 1044-677X
DOI: 10.6028/jres.095.020