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Updated: Oct 12, 2025

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

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The First Application of a Gd₃Al₂Ga₃O₁₂:Ce Single-Crystal Scintillator to Neutron Radiography.

Kazuhisa Isegawa¹, Daigo Setoyama², Hidehiko Kimura²

¹Japan Atomic Energy Agency, Tokai 319-1195, Japan.

Journal of Imaging

|November 25, 2021

Summary

This study introduces a new scintillator for neutron radiography, achieving a 10.5 μm spatial resolution. This advancement offers a path toward higher-resolution neutron imaging applications.

Keywords:

gadolinium aluminium gallium garnet neutron imaging neutron radiography neutron scintillator

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Area of Science:

Materials Science
Physics
Imaging Technology

Background:

Neutron radiography complements X-ray radiography but faces limitations in spatial resolution.
Current methods for improving neutron imaging resolution include optical magnification and event centroiding.

Purpose of the Study:

To investigate the potential of a novel single-crystal scintillator for enhancing neutron radiography resolution.
To evaluate the spatial resolution achievable with a Gadolinium Aluminum Gallium Oxide doped with Cerium (Gd3Al2Ga3O12:Ce) scintillator.

Main Methods:

Application of a Gd3Al2Ga3O12:Ce single-crystal scintillator in neutron radiography for the first time.
Evaluation of the achieved spatial resolution.

Main Results:

A spatial resolution of 10.5 μm was successfully achieved using the novel scintillator.
The Gd3Al2Ga3O12:Ce scintillator demonstrated significant potential for micrometer-order resolution.

Conclusions:

The Gd3Al2Ga3O12:Ce scintillator is a promising material for next-generation neutron imaging.
Optimizing the optical system and scintillator luminosity can further enhance resolution in neutron radiography.