SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT IN A TETRAVALENT STATE

    公开(公告)号:US20180079956A1

    公开(公告)日:2018-03-22

    申请号:US15679762

    申请日:2017-08-17

    IPC分类号: C09K11/77 G01T1/20

    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.

    ANNEALING OF SINGLE CRYSTALS
    2.
    发明申请

    公开(公告)号:US20130251614A1

    公开(公告)日:2013-09-26

    申请号:US13899708

    申请日:2013-05-22

    IPC分类号: C30B29/12

    CPC分类号: C30B29/12 C30B33/02

    摘要: The invention relates to a process for manufacturing a single crystal comprising a rare-earth halide, having improved machining or cleavage behaviour, comprising heat treatment in a furnace, the atmosphere of which is brought, for at least 1 hour, to between 0.70 times Tm and 0.995 times Tm of a single crystal comprising a rare-earth halide, Tm representing the melting point of said single crystal, the temperature gradient at any point in the atmosphere of the furnace being less than 15 K/cm for said heat treatment. After carrying out the treatment according to the invention, the single crystals may be machined or cleaved without uncontrolled fracture. The single crystals may be used in a medical imaging device, especially a positron emission tomography system or a gamma camera or a CT scanner, for crude oil exploration, for detection and identification of fissile or radioactive materials, for nuclear and high-energy physics, for astrophysics or for industrial control.

    Scintillation compound including a rare earth element in a tetravalent state

    公开(公告)号:US10647916B2

    公开(公告)日:2020-05-12

    申请号:US15679762

    申请日:2017-08-17

    IPC分类号: C09K11/77 G01T1/20

    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.

    Process of forming a luminescent material
    5.
    发明授权
    Process of forming a luminescent material 有权
    形成发光材料的工艺

    公开(公告)号:US08871115B2

    公开(公告)日:2014-10-28

    申请号:US13684445

    申请日:2012-11-23

    IPC分类号: C09K11/08 C09K11/77

    摘要: A luminescent material can be formed by a process using a vacancy-filling agent that includes vacancy-filling atoms. In an embodiment, the process can include forming a mixture of a constituent corresponding to the luminescent material and the vacancy-filling agent. The process can further include forming the luminescent material from the mixture, wherein the luminescent material includes at least some of the vacancy-filling atoms from the vacancy-filling agent. In another embodiment, the process can include melting a constituent corresponding to the luminescent material to form a melt and adding a vacancy-filling agent into the melt. The process can also include forming the luminescent material from the melt, wherein the luminescent material includes at least some of the vacancy-filling atoms from the vacancy-filling agent. The luminescent material may have one or more improved performance properties as compared to a corresponding base material of the luminescent material.

    摘要翻译: 可以通过使用包括空位填充原子的空位填充剂的方法形成发光材料。 在一个实施方案中,该方法可以包括形成对应于发光材料的成分和空位填充剂的混合物。 该方法还可以包括从混合物形成发光材料,其中发光材料包括空位填充剂中至少一些空位填充原子。 在另一个实施方案中,该方法可以包括熔化对应于发光材料的成分以形成熔体并将空位填充剂加入到熔体中。 该方法还可以包括从熔体形成发光材料,其中发光材料包括空位填充剂的至少一些空位填充原子。 与发光材料的相应基材相比,发光材料可以具有一个或多个改进的性能特性。

    SCINTILLATION CRYSTAL INCLUDING A RARE EARTH HALIDE, AND A RADIATION DETECTION APPARATUS INCLUDING THE SCINTILLATION CRYSTAL
    6.
    发明申请
    SCINTILLATION CRYSTAL INCLUDING A RARE EARTH HALIDE, AND A RADIATION DETECTION APPARATUS INCLUDING THE SCINTILLATION CRYSTAL 审中-公开
    包括稀土元素在内的晶体晶体,以及包括晶体晶体的辐射检测装置

    公开(公告)号:US20140117242A1

    公开(公告)日:2014-05-01

    申请号:US14064981

    申请日:2013-10-28

    IPC分类号: G01T1/202 G01T1/20

    摘要: A scintillation crystal can include Ln(1-y)REyX3, wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, the scintillation crystal is doped with a Group 1 element, a Group 2 element, or a mixture thereof, and the scintillation crystal is formed from a melt having a concentration of such elements or mixture thereof of at least approximately 0.02 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved proportionality and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection apparatus can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection apparatus can be useful in a variety of applications.

    摘要翻译: 闪烁晶体可以包括Ln(1-y)REyX3,其中Ln表示稀土元素,RE表示不同的稀土元素,y的值在0至1的范围内,X表示卤素。 在一个实施例中,闪烁晶体掺杂有第1族元素,第2族元素或其混合物,并且闪烁晶体由具有至少约0.02重量%的这种元素或其混合物的浓度的熔体形成。 %。 在另一个实施例中,闪烁晶体可以具有意想不到的改进的比例性,并且意外地改善了能量分辨率特性。 在另一个实施例中,放射线检测装置可以包括闪烁晶体,光电传感器和电子器件。 这种放射线检测装置在各种应用中是有用的。

    SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT AND A PROCESS OF FORMING THE SAME
    7.
    发明申请
    SCINTILLATION COMPOUND INCLUDING A RARE EARTH ELEMENT AND A PROCESS OF FORMING THE SAME 审中-公开
    包括稀土元素在内的复合化合物及其形成方法

    公开(公告)号:US20130327986A1

    公开(公告)日:2013-12-12

    申请号:US13885966

    申请日:2011-11-16

    IPC分类号: C09K11/77

    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.

    摘要翻译: 闪烁化合物可以包括处于二价(RE2 +)或四价态(RE4 +)的稀土元素。 闪烁化合物可以包括另一种元素以允许更好的变化平衡。 另一个元素可以是闪烁化合物的主要成分,也可以是掺杂剂或共掺杂剂。 在一个实施方案中,三价状态的金属元素(M3 +)可以被RE4 +和二价状态的金属元素(M2 +)代替。 在另一个实施例中,M3 +可被RE2 +和M4 +代替。 在另一个实施方案中,M2 +可被RE3 +和一价状态的金属元素(M1 +)代替。 用于电子电荷平衡的金属元素可以具有单一的价态,而不是多个价态,以帮助降低在形成闪烁化合物期间价态会改变的可能性。

    Annealing of single crystals
    8.
    发明授权
    Annealing of single crystals 失效
    单晶退火

    公开(公告)号:US08470089B2

    公开(公告)日:2013-06-25

    申请号:US12121459

    申请日:2008-05-15

    IPC分类号: C30B1/02

    CPC分类号: C30B29/12 C30B33/02

    摘要: The invention relates to a process for manufacturing a single crystal comprising a rare-earth halide, having improved machining or cleavage behavior, comprising heat treatment in a furnace, the atmosphere of which is brought, for at least 1 hour, to between 0.70 times Tm and 0.995 times Tm of a single crystal comprising a rare-earth halide, Tm representing the melting point of said single crystal, the temperature gradient at any point in the atmosphere of the furnace being less than 15 K/cm for said heat treatment. After carrying out the treatment according to the invention, the single crystals may be machined or cleaved without uncontrolled fracture. The single crystals may be used in a medical imaging device, especially a positron emission tomography system or a gamma camera or a CT scanner, for crude oil exploration, for detection and identification of fissile or radioactive materials, for nuclear and high-energy physics, for astrophysics or for industrial control.

    摘要翻译: 本发明涉及一种制造包含稀土卤化物的单晶的方法,其具有改进的机械加工或断裂行为,包括在其气氛中进行至少1小时的炉中的热处理至0.70倍的Tm 和包含稀土卤化物的单晶的Tm的0.995倍,Tm表示所述单晶的熔点,炉的气氛中的任何点的温度梯度对于所述热处理小于15K / cm。 在进行根据本发明的处理之后,单晶可以被加工或切割而没有不受控制的断裂。 单晶可以用于医学成像装置,特别是正电子发射断层摄影系统或γ照相机或CT扫描仪,用于原子石油勘探,用于核和高能物理学的检测和识别裂变或放射性材料, 用于天体物理学或工业控制。

    LUMINESCENT MATERIAL AND A PROCESS OF FORMING THE SAME
    9.
    发明申请
    LUMINESCENT MATERIAL AND A PROCESS OF FORMING THE SAME 有权
    发光材料及其形成方法

    公开(公告)号:US20130175475A1

    公开(公告)日:2013-07-11

    申请号:US13684445

    申请日:2012-11-23

    IPC分类号: C09K11/77

    摘要: A luminescent material can be formed by a process using a vacancy-filling agent that includes vacancy-filling atoms. In an embodiment, the process can include forming a mixture of a constituent corresponding to the luminescent material and the vacancy-filling agent. The process can further include forming the luminescent material from the mixture, wherein the luminescent material includes at least some of the vacancy-filling atoms from the vacancy-filling agent. In another embodiment, the process can include melting a constituent corresponding to the luminescent material to form a melt and adding a vacancy-filling agent into the melt. The process can also include forming the luminescent material from the melt, wherein the luminescent material includes at least some of the vacancy-filling atoms from the vacancy-filling agent. The luminescent material may have one or more improved performance properties as compared to a corresponding base material of the luminescent material.

    摘要翻译: 可以通过使用包括空位填充原子的空位填充剂的方法形成发光材料。 在一个实施方案中,该方法可以包括形成对应于发光材料的成分和空位填充剂的混合物。 该方法还可以包括从混合物形成发光材料,其中发光材料包括空位填充剂中至少一些空位填充原子。 在另一个实施方案中,该方法可以包括熔化对应于发光材料的成分以形成熔体并将空位填充剂加入到熔体中。 该方法还可以包括从熔体形成发光材料,其中发光材料包括空位填充剂的至少一些空位填充原子。 与发光材料的相应基材相比,发光材料可以具有一个或多个改进的性能特性。