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4. Activity measurement with standard
The activity of the source to be measuredA , expressed in becquerels (Bq), is equal to the count rate delivered by the measuring device N divided by the detection efficiency R :
As detection efficiencies are generally less than unity, and vary according to measurement conditions, liquid scintillation is the most frequently used measurement method, and is relative to a standard source of the same radionuclide.
4.1 Source preparation
The validity of activity measurements carried out by liquid scintillation counting depends on the correct preparation...
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Activity measurement with standard
Activity metrology
Bibliography
Bibliography
Standards
Radioactivity measurement by liquid scintillation
- Nuclear instruments – Liquid scintillation counting systems – Function control. - CEI 61304 - 1994
- Water quality – Determining tritium activity by volume – Liquid scintillation counting method. - ISO 9698 -
- Measuring radioactivity – Determining the activity of β-emitting radionuclides – Liquid scintillation counting test method. - NF ISO 19361 - 2017 ...
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Teaching
The Institut National des Sciences et Techniques Nucléaires INSTN organizes several annual continuing education courses on liquid scintillation measurement techniques. http://www-instn.cea.fr
Learned societies and congresses
An international congress on the development of liquid scintillation techniques is...
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