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NBS (National Bureau of Standards) measurement services: radioactivity calibrations with the 4 pi gamma ionization chamber and other radioactivity calibration capabilities. Special pub. (Final)

Technical Report ·
OSTI ID:5656787

The paper describes the use of the NBS 4 pi' gamma ionization chamber - an instrument which provides an indirect method of comparing the activity (decays per second) of gamma-ray-emitting radionuclides with national standards for a routine calibration service by the National Bureau of Standards Radioactivity Group. A description of the chamber's construction and characteristics, the operational procedure, and the associated equipment is included. A description of NBS capabilities for direct radioactivity calibrations is also presented. Many of these capabilities are used to establish calibration factors for the 4 pc gamma ionization chamber.

Research Organization:
National Bureau of Standards, Washington, DC (USA). Center for Radiation Research
OSTI ID:
5656787
Report Number(s):
PB-88-123708/XAB; NBS/SP-250/10
Country of Publication:
United States
Language:
English