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Updated: Jun 3, 2026
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
The physics of solid-state neutron detector materials and geometries
1Department of Physics, University of Missouri-Kansas City, Kansas City, MO 64110, USA. carusoan@umkc.edu
Summary
Advanced neutron detectors are crucial for nuclear medicine, physics, and energy. This review explores new semiconductor materials and device designs for highly efficient neutron detection, highlighting current progress and future challenges.
Area of Science:
- Nuclear physics and instrumentation
- Materials science for radiation detection
Background:
- High-efficiency neutron detection is vital across diverse scientific fields, including nuclear medicine, high-energy physics, and nuclear energy.
- Current detectors often rely on indirect conversion methods using materials like silicon and gallium arsenide, achieving moderate to high efficiency.
Purpose of the Study:
- To review recent advances and challenges in charged-particle-based neutron detector technologies.
- To focus on device geometries, materials, and transduction mechanisms for both direct and indirect neutron detection.
Main Methods:
- Exploration of indirect-conversion geometries and processing methods for semiconductor materials.
- Investigation of materials with high neutron cross sections and novel transduction mechanisms.
- Analysis of device designs for improved kinetic energy, time, and position resolution.
Main Results:
- Development of moderate- to high-efficiency neutron detectors through engineered interfaces and material properties.
- Emerging recognition of semiconductors with high neutron cross sections for very high total efficiency.
- Identification of challenges in material growth and processing for advanced neutron detection.
Conclusions:
- Semiconductor-based neutron detectors are rapidly advancing, offering improved performance for various applications.
- Further research into material science and device engineering is needed to overcome current limitations and realize next-generation detectors.
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