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Related Experiment Video

Updated: Jul 14, 2026

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

Published on: May 7, 2021

An ultra fast, radiation-resistant fast neutron detector.

M Nakhostin1, M Baba, T Oishi

  • 1Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Japan. nakhostin@cyric.tohoku.ac.jp

Radiation Protection Dosimetry
|June 19, 2007
PubMed
Summary

This study presents a new method for 14-MeV neutron detection using a parallel plate avalanche chamber and a polypropylene converter. The system achieved a low background and a 0.15% detection efficiency for fast neutrons.

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Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

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Related Experiment Videos

Last Updated: Jul 14, 2026

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
10:24

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Published on: May 7, 2021

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
11:27

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

Area of Science:

  • Nuclear instrumentation
  • Particle detection physics

Background:

  • Accurate detection of fast neutrons (14 MeV) is crucial for applications in nuclear physics and security.
  • Traditional detectors face challenges with background noise and efficiency.

Purpose of the Study:

  • To develop and evaluate a novel detector system for 14-MeV neutron detection.
  • To minimize background signals from the detector components.

Main Methods:

  • A parallel plate avalanche chamber was combined with a polypropylene sheet as a neutron-to-charged-particle converter.
  • Careful shielding was implemented to reduce background noise.
  • Signal characteristics and detection efficiency were measured.

Main Results:

  • Neutron-induced charged particle background from the chamber body was reduced to less than 6 x 10^-5 counts per incident neutron.
  • Fast signals with approximately 7 ns pulse width were observed.
  • The overall detection efficiency was determined to be 0.15%.

Conclusions:

  • The developed detector system demonstrates effective 14-MeV neutron detection with significantly reduced background.
  • The combination of a parallel plate avalanche chamber and polypropylene converter shows promise for future neutron detection applications.