The efficient use of appropriate calibration standards and the correction for the attenuation of the gamma rays within …. Also discussed are the nature of appropriate calibration standards and the necessary conditions on the composition, size …, and shape of the samples to allow accurate assays. Procedures for determining the correction for the sample self-attenuation …

Working Calibration and Test Material (WCTM) solutions are essential as standards in the surveillance of analytical …

The Plutonium Facility, TA-55, at Los Alamos National Laboratory is currently producing NDA calibration standards used … by various laboratories in the DOE complex. These NIST traceable standards have been produced to calibrate NDA … residues and process waste. Standards are needed to calibrate various NDA (Non-destructive Assay) instruments such as neutron …

Absolute AMS measurements of /sup 10/Be require reliable standards for calibration. Among the existing standards … reported values but is about three times more accurate. Two independent dilution series produced new AMS standards with /sup 10 …/Be//sup 9/Be ratios of the order of 10/sup -10/ and 10/sup -11/. These standards were measured at the ETH/SIN AMS …

the database used. Risks for the induction of cancer from radiation are based on large sets of human data, while standards … establish standards, and the differences in the basic philosophy for deriving risks for physical and chemical agents make the …

, and nuclear materials. High-quality measurements require well-characterized SNM standards that represent the expected … availability of NDA standards, facilities must usually produce their own standards, both to meet their specific measurement needs … and to comply with existing regulations. This paper will describe the current extent to which NDA standards are …

involving radioactivity measurements. Contents include: fundamentals of measurement quality assurance (MQA), standards for MQA …