Neutron imaging with lithium indium diselenide: Surface properties, spatial resolution, and computed tomography

Journal Article · 18 August 2017 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI: https://doi.org/10.1016/j.nima.2017.08.028 · OSTI ID:1478520

Lukosi, Eric D. ^[1]; Herrera, Elan H. ^[1]; Hamm, Daniel S. ^[1]; Burger, Arnold ^[2]; Stowe, Ashley C. ^[3]

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1. Univ. of Tennessee, Knoxville, TN (United States)
2. Vanderbilt Univ., Nashville, TN (United States); Fisk Univ., Nashville, TN (United States)
3. Univ. of Tennessee, Knoxville, TN (United States); Y-12 National Security Complex, Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)

An array of lithium indium diselenide (LISe) scintillators were investigated for application in neutron imaging. The sensors, varying in thickness and surface roughness, were tested using both reflective and anti-reflective mounting to the aluminum window. The spatial resolution of each LISe scintillator was calculated using the knife-edge test and a modulation transfer function analysis. It was found that the anti-reflective backing yielded a significantly higher spatial resolution over the reflective backing, and in most cases far exceeded the spatial resolution of a 50 μm-thick ZnS(Cu):⁶LiF scintillation screen. Further, an apparent relationship between the observed increase in spatial resolution when using an anti-reflective backing and the quotient of the surface roughness to the thickness of the LISe scintillator was observed. Lastly, the LISe scintillator array was used in neutron computational tomography to investigate the features of halyomorpha halys.

• Research Organization: Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• Contributing Organization: Oak Ridge National Laboratory
• Grant/Contract Number: NA0001942
• OSTI ID: 1478520
• Alternate ID(s): OSTI ID: 22897090; OSTI ID: 1495631
• Report Number(s): IROS50438; PII: S0168900217308999
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
• Country of Publication: United States
• Language: English