IEEE N42.25-1997
Current
The latest, up-to-date edition.
American National Standard Calibration and Usage of Alpha/Beta Proportional Counters
Hardcopy , PDF
English
25-09-1997
1 Overview
1.1 Scope
1.2 Special word usage
2 References
3 Definitions
3.1 Glossary
3.2 Symbols
3.3 Apparatus
4 Calibration
4.1 General
4.2 Detector plateau measurement
4.3 Discriminator settings
4.4 Background
4.5 Efficiency
5 Sources
5.1 Efficiency calibration sources
5.2 Check sources
6 Performance tests
6.1 Sources
6.2 Verification of counter background
6.3 Verification of alpha, beta, and guard plateau bias
points
6.4 Verification of crosstalk (spillup/spilldown)
6.5 Effectiveness of guard detector
6.6 Verification of alpha and beta efficiency
6.7 Estimated uncertainty for gross alpha/beta screening
7 Determination of uncertainties and their propagation
8 Quality control and assurance
Annex A (informative) preparation of working standards from
standard solutions
A.1 Simple volumetric preparation of planchet style sources
A.2 Simple gravimetric preparation of planchet style sources
Annex B (informative) guidance on measurement of samples
B.1 General precautions
B.2 Net count rates
B.3 Concentrations
B.4 Weight correction
B.5 Health physics smear samples
Annex C (informative) bibliography
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