Progress in Hexagonal Boron Nitride (h-BN)-Based Solid-State Neutron Detector

Hexagonal boron nitride epitaxial layers as neutron detector materials

Micro-strip metal–semiconductor–metal detectors for thermal neutron sensing were fabricated from hexagonal boron nitride (hBN) epilayers synthesized by metal organic chemical vapor deposition. Experimental measurements indicated that the thermal neutron absorption coefficient and length of natural hBN epilayers are about 0.00361 mm 1 and 277 mm, respectively. A continuous irradiation with a the...

Sub-Angstrom Edge Relaxations Probed by Electron Microscopy in Hexagonal Boron Nitride (h-BN)

Realization of highly efficient hexagonal boron nitride neutron detectors

We report the achievement of highly efficient B enriched hexagonal boron nitride (h-BN) direct conversion neutron detectors. These detectors were realized from freestanding 4-in. diameter h-BN wafers 43 lm in thickness obtained from epitaxy growth and subsequent mechanical separation from sapphire substrates. Both sides of the film were subjected to ohmic contact deposition to form a simple ver...

Hexagonal boron-nitride nanomesh magnets

Experimental comparison of thermal neutron absorption cross section in nano and micro particles

The neutron collision cross-section is important in neutron use for a specific job, such as neutron therapy or even in nuclear reactors. In calculating computational codes such as MCNP, only information from the neutron-to-mass collision information contained in the computational code library is used, in the case of nanoscale particles in contrast to the mass of materials and / or particulate m...