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High-efficiency organic glass scintillators

Patent ·
OSTI ID:1414412
;
A new family of neutron/gamma discriminating scintillators is disclosed that comprises stable organic glasses that may be melt-cast into transparent monoliths. These materials have been shown to provide light yields greater than solution-grown trans-stilbene crystals and efficient PSD capabilities when combined with 0.01 to 0.05% by weight of the total composition of a wavelength-shifting fluorophore. Photoluminescence measurements reveal fluorescence quantum yields that are 2 to 5 times greater than conventional plastic or liquid scintillator matrices, which accounts for the superior light yield of these glasses. The unique combination of high scintillation light-yields, efficient neutron/gamma PSD, and straightforward scale-up via melt-casting distinguishes the developed organic glasses from existing scintillators.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
9,845,334
Application Number:
15/289,611
OSTI ID:
1414412
Country of Publication:
United States
Language:
English

References (6)

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New spiro[benzotetraphene-fluorene] Derivatives: Synthesis and Application in Sky-Blue Fluorescent Host Materials journal May 2014
Spiro linked compounds for use as active materials in organic light emitting diodes journal January 1998
Crystallization of Organic Glasses: Effects of Polymer Additives on Bulk and Surface Crystal Growth in Amorphous Nifedipine journal June 2011
Synthesis of Amorphous Monomeric Glass Mixtures for Organic Electronic Applications journal November 2015
Fracture of molecular glasses under tension and increasing their fracture resistance with polymer additives journal December 2015

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36 MATERIALS SCIENCE