Advancing neutron imaging techniques to highest resolution with fluorescent nuclear track detectors

Area of Science:

• Materials Science
• Nuclear Physics
• Imaging Technology

Background:

• Neutron imaging offers non-destructive inspection but requires higher resolution.
• Current high-resolution methods using nuclear emulsions have limitations like reusability and chemical processing.

Purpose of the Study:

• To investigate fluorescent nuclear track detectors for high-resolution neutron imaging.
• To develop a novel, reusable neutron imaging device overcoming existing limitations.

Main Methods:

• Developed a neutron imaging device using fluorescent nuclear track detectors.
• Integrated a Boron Carbide (B4C) neutron converter layer.
• Performed neutron imaging of a gadolinium grating with 9 μm periodicity.

Main Results:

• Successfully resolved the 9 μm grating structure.
• Achieved an unprecedented resolution of 0.887 ± 0.009 μm.
• Demonstrated the reusability and lack of chemical processing for fluorescent nuclear track detectors.

Conclusions:

• Fluorescent nuclear track detectors are suitable for high-resolution neutron imaging.
• The developed technique offers a reusable and efficient alternative for nondestructive inspection.
• This advancement pushes the boundaries of neutron imaging resolution.