Abstract:The activity of tritiated water has been standardized by two liquid scintillation counting methods: The CIEMAT/NIST method with the 54 Mn-standard efficiency tracing and the triple-to-double coincidence ratio (TDCR) method. The samples were prepared with Ultima Gold TM AB liquid scintillation cocktail in low-potassium glass vials. In the application of the CIEMAT/ NIST method, the computer program EMILIA was used to calculate the efficiency of 3 H and 54 Mn according to the KL 1 L 2 L 3 M atomic rearrangement … Show more
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