Development of compact and modular neutron detector arrays using ⁶LiF+ZnS(Ag) and wavelength shifters

Neutron detection is vital for a broad range of scientific and practical applications, including nuclear physics, space missions, national security, and industrial surveys. Due to the neutral charge of neutrons, their detection requires specialized materials and techniques. Compact neutron detectors have become increasingly important for field applications, particularly in nuclear security, where portability and sensitivity are essential. ⁶LiF mixed with silver(Ag)-activated zinc sulfide (ZnS) scintillators is known to offer a significant advantage for neutron detection in radiation fields high in gamma rays. To improve light collection and transmission in compact geometries, the use of wavelength shifters as a light guide for ⁶LiF+ZnS(Ag) enables efficient light transport and signal readout. These enhancements support the construction of rugged, efficient, and lightweight detectors for deployment in mobile or space-constrained environments. A compact and modular array of detectors utilizing ⁶LiF+ZnS(Ag) and wavelength shifters are being investigated to further expand detection coverage and scalability for nuclear physics applications.