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Updated: Aug 2, 2026
07:51
Measurements of Soil Carbon by Neutron-Gamma Analysis in Static and Scanning Modes
Published on: August 24, 2017
Low level gamma spectrometry by beta-gamma coincidence
1National Institute of R&D for Physics and Nuclear Engineering-Horia Hulubei (IFIN-HH), Bucharest, Romania. aurelian_luca@yahoo.com
Summary
This study introduces a beta-gamma coincidence system that significantly reduces background noise and improves minimum detectable activity. The system achieves an integral background below 0.1 counts per second.
Area of Science:
- Nuclear instrumentation
- Radiation detection
Background:
- Traditional radiation detection methods often suffer from high background noise.
- Improving the sensitivity of radiation detection is crucial for various scientific applications.
Purpose of the Study:
- To describe a novel beta-gamma coincidence system.
- To demonstrate the system's effectiveness in reducing background and enhancing sensitivity.
Main Methods:
- Utilized a coincidence system combining a 2pi plastic beta detector and a Germanium detector (Ge(Li)).
- Measured integral background in the 50-1500 keV range.
Main Results:
- Achieved a drastic background reduction (approximately 70 times).
- Improved Minimum Detectable Activity (MDA) by approximately 7 times.
- Obtained an integral background of less than 0.1 counts per second.
Conclusions:
- The beta-gamma coincidence system offers a simple, inexpensive, and highly effective method for sensitive radiation detection.
- Precise determination of beta detector efficiency remains a key challenge for this technique.
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