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Software coincidence counting
Miroslav Havelka1, Pavel Auerbach, Jana Sochorová
1Czech Metrology Institute, Inspectorate for Ionising Radiation, Praha, Czech Republic. mhavelka@cmi.cz
Summary
A novel digital system enhances absolute activity measurement through advanced data recording and software processing. This method offers superior flexibility and analysis capabilities compared to traditional coincidence counting techniques.
Area of Science:
- Nuclear instrumentation
- Radiochemistry
- Metrology
Background:
- Traditional coincidence counting methods for absolute activity measurement have limitations in data analysis flexibility.
- Digital data acquisition systems offer potential for improved performance and advanced analytical capabilities.
Purpose of the Study:
- To describe a new digital system for absolute activity measurement using coincidence counting.
- To highlight the advantages of software-based data processing over conventional methods.
Main Methods:
- A digital data acquisition system was developed, recording pulse amplitudes and time information from analogue-to-digital converters.
- The system utilizes software for processing recorded data, enabling time and pulse height analysis.
- A 4pi beta-gamma coincidence detection setup with a proportional counter and NaI(Tl) detectors was employed for testing.
Main Results:
- The digital system successfully recorded pulse amplitude and time data for coincidence measurements.
- Software processing allowed for flexible analysis, including time and pulse height analysis.
- The system demonstrated its capability in absolute activity measurement using a 60Co source.
Conclusions:
- The described digital system provides a flexible and powerful approach to absolute activity measurement.
- Software-based data processing significantly enhances the capabilities of coincidence counting techniques.
- This digital method offers a viable alternative to conventional systems for precise radioactivity measurements.