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公开(公告)号：US09845334B1
公开(公告)日：2017-12-19
申请号：US15289611
申请日：2016-10-10
发明人： Patrick L. Feng , Joseph S. Carlson
IPC分类号： G01T1/20 , C07F9/46 , C09K11/06 , C07F7/08 , C07C209/08 , C07C211/54 , G01T3/06
CPC分类号： C07F9/46 , C07C209/08 , C07C211/54 , C07F7/0805 , C07F7/081 , C07F7/0827 , C07F9/5325 , C09K11/06 , C09K2211/1011 , C09K2211/1014 , G01T1/20 , G01T1/2023 , G01T3/06
摘要： 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.
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公开(公告)号：US20230314634A1
公开(公告)日：2023-10-05
申请号：US18144544
申请日：2023-05-08
发明人： Joseph Carlson , Patrick L. Feng , Nicholas Myllenbeck , Huu Tran , Lucas Nguyen , Melinda Sweany , Peter Marleau
IPC分类号： G01T1/20 , H01L27/146
CPC分类号： G01T1/2018 , H01L27/14689 , H01L27/14663
摘要： A radiation detector includes a photodetector and a scintillator coupled thereto. The scintillator is formed of a scintillator material comprising an organic glass scintillator (OGS) material and at least one of a polymer additive or a plasticizer additive. The scintillator emits light when radiation is received at the scintillator, and the light is received by the photodetector. The radiation detector can further include a frame that has an interior cavity that holds the scintillator in position with respect to the photodetector, such that the light emitted by the scintillator is transmitted to the photodetector. The scintillator can be formed by casting amorphous scintillator material in the interior cavity of the frame. The frame can then be coupled to the photodetector to form the radiation detector.
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公开(公告)号：US20220403235A1
公开(公告)日：2022-12-22
申请号：US17881859
申请日：2022-08-05
摘要： A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
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公开(公告)号：US11479717B1
公开(公告)日：2022-10-25
申请号：US16198424
申请日：2018-11-21
摘要： A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
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公开(公告)号：US11795388B2
公开(公告)日：2023-10-24
申请号：US17881859
申请日：2022-08-05
CPC分类号： C09K11/06 , C09K11/025 , G01T1/2033 , C09K2211/1011 , C09K2211/1014 , C09K2211/1018
摘要： A plastic scintillator includes a polymeric matrix comprising a primary fluorophore capable of forming an amorphous glass in its pure form. The primary fluorophore is also capable of generating luminescence in the presence of ionizing radiation and includes: a central species including silicon; a luminescent organic group bonded to the central species or to an optional organic linker group, the luminescent organic group including fluorene or an analog thereof; and the optional organic linker group, if present, is bonded to the central species and the luminescent organic group.
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公开(公告)号：US12105231B2
公开(公告)日：2024-10-01
申请号：US18144544
申请日：2023-05-08
发明人： Joseph Carlson , Patrick L. Feng , Nicholas Myllenbeck , Huu Tran , Lucas Nguyen , Melinda Sweany , Peter Marleau
IPC分类号： G01T1/20 , H01L27/146
CPC分类号： G01T1/2018 , H01L27/14663 , H01L27/14689
摘要： A radiation detector includes a photodetector and a scintillator coupled thereto. The scintillator is formed of a scintillator material comprising an organic glass scintillator (OGS) material and at least one of a polymer additive or a plasticizer additive. The scintillator emits light when radiation is received at the scintillator, and the light is received by the photodetector. The radiation detector can further include a frame that has an interior cavity that holds the scintillator in position with respect to the photodetector, such that the light emitted by the scintillator is transmitted to the photodetector. The scintillator can be formed by casting amorphous scintillator material in the interior cavity of the frame. The frame can then be coupled to the photodetector to form the radiation detector.
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公开(公告)号：US11681055B1
公开(公告)日：2023-06-20
申请号：US17158198
申请日：2021-01-26
发明人： Joseph Carlson , Patrick L. Feng , Nicholas Myllenbeck , Huu Tran , Lucas Nguyen , Melinda Sweany , Peter Marleau
IPC分类号： G01T1/20 , H01L27/146
CPC分类号： G01T1/2018 , H01L27/14663 , H01L27/14689
摘要： A radiation detector includes a photodetector and a scintillator coupled thereto. The scintillator is formed of a scintillator material comprising an organic glass scintillator (OGS) material and at least one of a polymer additive or a plasticizer additive. The scintillator emits light when radiation is received at the scintillator, and the light is received by the photodetector. The radiation detector can further include a frame that has an interior cavity that holds the scintillator in position with respect to the photodetector, such that the light emitted by the scintillator is transmitted to the photodetector. The scintillator can be formed by casting amorphous scintillator material in the interior cavity of the frame. The frame can then be coupled to the photodetector to form the radiation detector.
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公开(公告)号：US10538701B1
公开(公告)日：2020-01-21
申请号：US15898906
申请日：2018-02-19
IPC分类号： C09K11/07 , C09K11/58 , C09K11/60 , C09K11/54 , B33Y10/00 , C09B15/00 , C09B57/02 , C09B6/00 , C07D311/82 , C09B57/14
摘要： A fluorescent composition includes at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.
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公开(公告)号：US10024983B1
公开(公告)日：2018-07-17
申请号：US15287555
申请日：2016-10-06
CPC分类号： G01T1/2033 , G01T1/203 , G01T1/204 , G01T1/2042
摘要： Exemplary embodiments of several new metal-loaded plastic scintillators are reported herein, comprising sterically and electronically isolated organotin additive complexes. Distance-dependent quenching relationships have been used as design criteria for the selection and synthesis of these organometallic additives, resulting in increased light yields and improved gamma-ray energy resolution values relative to previously reported PS/PVT examples. Fast scintillation decay properties have also been characterized in the prepared scintillators, rivaling the kinetics of stilbene-doped bibenzyl and BC-422Q-1% while providing higher light yields than these reference materials.
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公开(公告)号：US11680202B2
公开(公告)日：2023-06-20
申请号：US17381412
申请日：2021-07-21
IPC分类号： C09K11/07 , C09K11/54 , C09K11/58 , C09K11/60 , C09D5/22 , B33Y80/00 , B33Y10/00 , C09B15/00 , C09B57/02 , C09B6/00 , C07D311/82 , C09B57/14
CPC分类号： C09K11/07 , C09K11/54 , C09K11/58 , C09K11/60 , B33Y10/00 , C07D311/82 , C09B6/00 , C09B15/00 , C09B57/02 , C09B57/14
摘要： An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.
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