We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Exploring background variability of a low-level (quartz) gas proportional counter using pulse shape and distribution analysis.
- Authors
Klouda, George; Filliben, James
- Abstract
The NIST low-level beta counting system is designed to capture digitally and timestamp each event for retrospective analysis. As a result, low and stable backgrounds are achieved and lead to extremely low detection and quantification limits for measuring, e.g., C of atmospheric gases and aerosol. The objective here is to explore the variability of the background count rate (counts per day) of several small (1 mL) freshly-assembled gas proportional counters (GPCs). The mean is 14.0 day with 95 % confidence limits 11.2-16.8 day. The raw count per day data was non-normal and so a Log transformation was applied to achieve normality and to rigorously compute normal tolerance limits. Back in the original space such (95 % confidence, 95 % coverage) tolerance limits were 2.5-47.8 day. These limits are taken as acceptance criteria for any GPCs assembled in the future.
- Subjects
BACKGROUND radiation; LOW-level radiation; QUARTZ; PROPORTIONAL counters; PULSE shaping (Digital communications); DISTRIBUTION (Probability theory); ATMOSPHERIC aerosols
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2013, Vol 296, Issue 2, p997
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-012-1969-6