This work presents the fabrication and experimental evaluation of instrumentation designed to enable higher spatial resolution neutron radiography for those performing research at neutron scattering facilities. Herein, we describe a proof-of-concept array of microstructured silicate fibers with6Li doped cores that shows progress towards a design for μm resolution neutron radiography. The multicore fiber was fabricated by drawing stacked unit elements of Guardian Glass (Nucsafe Inc., Oak Ridge, TN, USA), a6Li scintillating core glass, and a silicate cladding glass. These structured fibers function as an array of sub-10-μm waveguides for scintillation light. Measurements have shown a significantly increased integrated charge distribution in response to neutrons, and the spatial resolution of the radiographs is described by edge response and line spread functions of 48±4μm and 59±8μm, respectively.

Fabrication and experimental evaluation of microstructured6Li silicate fiber arrays for high spatial resolution neutron imaging

Lousteau J.;
2020

Abstract

This work presents the fabrication and experimental evaluation of instrumentation designed to enable higher spatial resolution neutron radiography for those performing research at neutron scattering facilities. Herein, we describe a proof-of-concept array of microstructured silicate fibers with6Li doped cores that shows progress towards a design for μm resolution neutron radiography. The multicore fiber was fabricated by drawing stacked unit elements of Guardian Glass (Nucsafe Inc., Oak Ridge, TN, USA), a6Li scintillating core glass, and a silicate cladding glass. These structured fibers function as an array of sub-10-μm waveguides for scintillation light. Measurements have shown a significantly increased integrated charge distribution in response to neutrons, and the spatial resolution of the radiographs is described by edge response and line spread functions of 48±4μm and 59±8μm, respectively.
High spatial resolution; Lithium glass; Multicore fiber; Neutron radiography; Optical waveguides; Particle tracking
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1126070
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