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Related Experiment Videos

Digital pulse shape discrimination.

L F Miller1, J Preston, S Pozzi

  • 1Department of Nuclear Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2300, USA. lfmiller@utk.edu

Radiation Protection Dosimetry
|June 19, 2007
PubMed
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Digital pulse-shape discrimination (PSD) offers an effective method for estimating dose in mixed neutron and photon fields. This advanced technique utilizes high-speed digitizers to analyze scintillator signals, improving accuracy in radiation detection.

Area of Science:

  • Nuclear Physics
  • Radiation Detection and Measurement

Background:

  • Pulse-shape discrimination (PSD) is a long-standing technique for dose estimation in mixed neutron and photon fields.
  • Traditional analog PSD methods face challenges due to variations in scintillator light output with deposited energy.

Purpose of the Study:

  • To investigate the effectiveness of digital pulse-shape discrimination (PSD) for dose estimation in mixed radiation fields.
  • To leverage modern high-speed digitizers for improved neutron detection and characterization.

Main Methods:

  • Directly sampling photomultiplier tube signals using GHz digitizers.
  • Implementing digital signal processing for pulse-shape analysis.
  • Utilizing scintillators like BC501A and accounting for energy-dependent light output variations.

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Main Results:

  • Digital PSD effectively accommodates variations in scintillator light output.
  • The digital approach simplifies the processing of complex signals compared to analog methods.
  • Demonstrated the practical effectiveness of digital PSD in mixed neutron and photon fields.

Conclusions:

  • Digital PSD provides a more robust and adaptable method for dose estimation in mixed radiation environments.
  • Advancements in digitizer technology enable sophisticated digital signal processing for radiation detection.
  • Digital PSD offers superior performance in handling energy-dependent scintillator responses.