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公开(公告)号：US10907096B2
公开(公告)日：2021-02-02
申请号：US15833774
申请日：2017-12-06
发明人： Samuel Blahuta , Eric E. Mattmann , Damien Pauwels , Bruno Viana
摘要： A scintillation compound can include a rare earth element that is in a divalent (RE2+) or a tetravalent state (RE4+). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M3+) may be replaced by RE4+ and a metal element in a divalent state (M2+). In another embodiment, M3+ may be replaced by RE2+ and M4+. In a further embodiment, M2+ may be replaced by a RE3+ and a metal element in a monovalent state (M1+). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound.
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公开(公告)号：US10053623B2
公开(公告)日：2018-08-21
申请号：US15474230
申请日：2017-03-30
发明人： Kan Yang , Julien LeJay , Samuel Blahuta , Vladimir Ouspenski
CPC分类号： C09K11/628 , G01T1/2023 , G01T3/06
摘要： A scintillator can include a monocrystalline compound having a general formula Na(1-y)LiyX, where 0
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公开(公告)号：US10901099B2
公开(公告)日：2021-01-26
申请号：US16804133
申请日：2020-02-28
发明人： Samuel Blahuta , Vladimir Ouspenski
摘要： A scintillation crystal can include a rare earth silicate, an activator, and a Group 2 co-dopant. In an embodiment, the Group 2 co-dopant concentration may not exceed 200 ppm atomic in the crystal or 0.25 at % in the melt before the crystal is formed. The ratio of the Group 2 concentration/activator atomic concentration can be in a range of 0.4 to 2.5. In another embodiment, the scintillation crystal may have a decay time no greater than 40 ns, and in another embodiment, have the same or higher light output than another crystal having the same composition except without the Group 2 co-dopant. In a further embodiment, a boule can be grown to a diameter of at least 75 mm and have no spiral or very low spiral and no cracks. The scintillation crystal can be used in a radiation detection apparatus and be coupled to a photosensor.
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公开(公告)号：US20190204458A1
公开(公告)日：2019-07-04
申请号：US16297097
申请日：2019-03-08
发明人： Samuel Blahuta , Vladimir Ouspenski
CPC分类号： G01T1/2023 , C09K11/7774 , C30B15/00 , C30B15/04 , C30B29/34 , G01T1/2018
摘要： A scintillation crystal can include a rare earth silicate, an activator, and a Group 2 co-dopant. In an embodiment, the Group 2 co-dopant concentration may not exceed 200 ppm atomic in the crystal or 0.25 at in the melt before the crystal is formed. The ratio of the Group 2 concentration/activator atomic concentration can be in a range of 0.4 to 2.5. In another embodiment, the scintillation crystal may have a decay time no greater than 40 ns, and in another embodiment, have the same or higher light output than another crystal having the same composition except without the Group 2 co-dopant. In a further embodiment, a boule can be grown to a diameter of at least 75 mm and have no spiral or very low spiral and no cracks. The scintillation crystal can be used in a radiation detection apparatus and be coupled to a photosensor.
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公开(公告)号：US20170283696A1
公开(公告)日：2017-10-05
申请号：US15474230
申请日：2017-03-30
发明人： Kan YANG , Julien Lejay , Samuel Blahuta , Vladimir Ouspenski
CPC分类号： C09K11/628 , G01T1/2023 , G01T3/06
摘要： A scintillator can include a monocrystalline compound having a general formula Na(1-y)LiyX, where 0
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