Standardization of alpha-particle sources
Description
The calibration of alpha-particle sources at the National Bureau of Standards began about 1950 with the measurement of 2π alpha-particle-emission rates using a hemispherical gas-flow proportional counter. Today activities are also determined using defined-geometry counters with scintillation detectors and 4πα-γ coincidence counters. As the measurement techniques have evolved, the overall uncertainty associated with the determination of the activity of an alpha-particle source has decreased by about an order of magnitude, from several percent to several tenths of one percent. The factors contributing to the overall uncertainty fall into two general categories: those associated with the detection system and those associated with the source. These factors are discussed, along with suggestions for minimizng the overall uncertainty
Additional details
Publishing Information
- Journal Title
- Am. Soc. Test. Mater., Spec. Tech. Publ.
- Journal Issue
- no.698
- Series
- Am. Soc. Test. Mater., Spec. Tech. Publ.
- ISSN
- 0066-0558
Conference
- Title
- Conference of the American Society for Testing and Materials.
- Dates
- 9 - 14 Jul 1978.
- Place
- Johnson, VT, USA.
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 12626457
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ACCURACY; ALPHA SOURCES; CALIBRATION; EFFICIENCY; ENVIRONMENT; ERRORS; LIQUID SCINTILLATION DETECTORS; MEASURING METHODS; PARTICLE SIZE; STANDARDIZATION
- Descriptors DEC
- ION SOURCES; MEASURING INSTRUMENTS; PARTICLE SOURCES; RADIATION DETECTORS; RADIATION SOURCES; SCINTILLATION COUNTERS; SIZE
Optional Information
- Notes
- Replaces CONF-780745.
- Secondary number(s)
- CONF-780719--.