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    • 1. 发明申请
    • X-RAY IMAGING PHOTOSTIMULABLE PHOSPHOR SCREEN OR PANEL
    • X射线成像可光化荧光屏或面板
    • US20090242836A1
    • 2009-10-01
    • US12327187
    • 2008-12-03
    • Jean-Pierre TahonJens LenaertsLaszlo VinczeGeert SilversmitPaul Leblans
    • Jean-Pierre TahonJens LenaertsLaszlo VinczeGeert SilversmitPaul Leblans
    • C09K11/77C23C16/00
    • G21K4/00C09K11/7733
    • In a method of preparing a phosphor or scintillator layer to become deposited on a support, a vapor depositing step is applied from a crucible unit by heating as phosphor precursor raw materials present in said crucible, a Cs(X,X′) matrix compound and an activator or dopant precursor compound, wherein said crucible unit comprises at least a bottom and surrounding side walls as a container for phosphor precursor raw materials present in said crucible in liquefied form after heating said crucible, and wherein said Cs(X,X′) matrix compound has a higher vapor pressure than said activator or dopant precursor compound, said method comprising a step of providing said activator or dopant compound in form of a precursor raw material represented by the formula CsxEuyX′(x+αy), wherein x, y and α are integers, wherein x/y is more than 0.25 and wherein α is at least 2, wherein X represents Br and wherein X′ stands for F, Cl, Br, I or a combination thereof; followed by an annealing step after a vapor depositing step, provided that said annealing step proceeds in an ambient atmosphere after cooling said phosphor or scintillator layer, deposited on said support; and wherein as a result a binderless needle-shaped Cs(X,X′):Eu phosphor or scintillator layer becomes provided, having on top of its needle-shaped phosphors, aligned in parallel, an average ratio of divalent to trivalent europium dopant of more than 1:1; wherein said average ratio decreases to an extent of less than 2% per hour, while being exposed to X-rays having an energy in the range from 1 to 100 keV.
    • 在制备荧光体或闪烁体层以沉积在载体上的方法中,通过加热坩埚单元中的荧光体前体原料,Cs(X,X')基质化合物和 活化剂或掺杂剂前体化合物,其中所述坩埚单元至少包括作为用于在加热所述坩埚之后以液化形式存在于所述坩埚中的荧光体前体原料的容器的底部和周围侧壁,并且其中所述Cs(X,X') 基质化合物具有比所述活化剂或掺杂剂前体化合物更高的蒸气压,所述方法包括以由式CsxEuyX'(x + alphay)表示的前体原料的形式提供所述活化剂或掺杂剂化合物的步骤,其中x,y 并且α是整数,其中x / y大于0.25,并且其中α是至少2,其中X表示Br,并且其中X'代表F,Cl,Br,I或它们的组合; 然后在气相沉积步骤之后进行退火步骤,只要所述退火步骤在冷却所述荧光体或闪烁体层之后在环境气氛中进行,沉积在所述载体上; 并且其中结果是提供无粘合剂的针状Cs(X,X'):Eu荧光体或闪烁体层,其在其针状荧光体的顶部平行排列,二价至三价铕掺杂剂的平均比例 超过1:1; 其中所述平均比例降低到小于2%/小时的程度,同时暴露于能量在1至100keV范围内的X射线。
    • 3. 发明申请
    • Method of erasing storage phosphor panels
    • 擦除存储荧光粉板的方法
    • US20080035867A1
    • 2008-02-14
    • US11825435
    • 2007-07-06
    • Luc StruyePaul LeblansJean-Pierre Tahon
    • Luc StruyePaul LeblansJean-Pierre Tahon
    • G01T1/105
    • G01T1/2016
    • In a method of reading a radiation image, stored in a CsBr:Eu type binderless needle-shaped photostimulable or storage phosphor screen after X-ray exposure of said screen, said method comprises the steps of: (1) erasing thermally stimulable energy by exposing said screen to infrared radiation in the wavelength range from 1000 nm to 1550 nm; (2) stimulating said phosphor screen by means of stimulating radiation in the range from 550 to 850 nm; (3) detecting light emitted by the phosphor screen upon stimulation and converting the detected light into a signal representation of said radiation image; (4) erasing said phosphor screen by exposing it to erasing light in the wavelength range of 300 nm to 1500 nm.
    • 在所述屏幕的X射线曝光之后,读取存储在CsBr:Eu型无粘合剂针状可光激励或储存荧光屏中的放射线图像的方法,所述方法包括以下步骤:(1)通过曝光消除热刺激能量 所述屏幕在1000nm至1550nm的波长范围内的红外辐射; (2)通过刺激550至850nm范围内的辐射来刺激所述荧光屏; (3)在刺激时检测由荧光屏发射的光,并将检测到的光转换成所述辐射图像的信号表示; (4)通过将所述荧光屏曝光于300nm至1500nm的波长范围的擦除光来擦除所述荧光屏。
    • 5. 发明授权
    • Method of preparing storage phosphors from dedicated precursors
    • 从专用前体制备储存磷光体的方法
    • US07276182B2
    • 2007-10-02
    • US11049249
    • 2005-02-02
    • Jean-Pierre TahonPaul LeblansJohan Lamotte
    • Jean-Pierre TahonPaul LeblansJohan Lamotte
    • C09K11/61
    • C09K11/7733G21K4/00
    • In a method for producing CsX:Eu stimulable phosphors and screens or panels provided with said phosphors as powder phosphors or vapor deposited needle-shaped phosphors suitable for use in image forming methods for recording and reproducing images of objects made by high energy radiation, said CsX:Eu stimulable phosphors are essentially free from oxygen in their crystal structure, wherein X represents a halide selected from the group consisting of Br, Cl and combinations thereof; and wherein the method further comprises the steps of mixing CsX with a compound or combinations of compounds having as a composition CsxEuyX′x+αy, wherein the ratio of x to y exceeds a value of 0.25, wherein α≧2 and wherein X′ is a halide selected from the group consisting of Cl, Br and I and combinations thereof; heating said mixture at a temperature above 450° C.; cooling said mixture, and, optionally, annealing and recovering said CsX:Eu phosphor.
    • 在适于用于记录和再现由高能量辐射制成的物体的图像的图像形成方法中使用的作为粉末荧光体或气相沉积针状荧光体的提供有所述荧光体的荧光体的CsX:Eu可激发荧光体和屏幕或面板的方法中,所述CsX :Eu可激发荧光体在其晶体结构中基本上不含氧,其中X表示选自Br,Cl及其组合的卤化物; 并且其中所述方法还包括以下步骤:将CsX与化合物或具有组合物的化合物的混合物混合,其中X 1, 其中x与y的比值超过0.25,其中α> = 2,其中X'为选自Cl,Br和I的卤化物及其组合; 在高于450℃的温度下加热所述混合物; 冷却所述混合物,并且任选地退火和回收所述CsX:Eu荧光体。
    • 8. 发明申请
    • Method of vaporization of phosphor precursor raw materials
    • 荧光粉前体原料蒸发方法
    • US20070098880A1
    • 2007-05-03
    • US11583484
    • 2006-10-18
    • Jean-Pierre TahonGuido VerreyckenPaul Leblans
    • Jean-Pierre TahonGuido VerreyckenPaul Leblans
    • B05D5/06
    • C23C14/0694C09K11/7733C23C14/24G21K4/00
    • In a method of preparing a storage phosphor layer on a support by vapor deposition from a crucible unit by heating as phosphor precursor raw materials a matrix component and an activator component or a precursor component thereof, wherein said crucible unit comprises at least a bottom and surrounding side walls as a crucible for phosphor precursor raw materials present in said crucible in liquid form, wherein said crucible unit further comprises at least a chimney as part of the crucible unit and a slit allowing phosphor precursor raw materials to escape in vaporized form from said crucible unit in order to deposit it as a phosphor layer onto said support, the step of heating said precursor raw materials in the crucible in liquid form proceeds up to a temperature T1 and the step of heating said precursor raw materials in vaporized form in said chimney, proceeds up to a temperature T2, characterized in that a positive difference in temperature [T2−T1] is maintained.
    • 在通过作为荧光体前体原料加热作为荧光体前体原料的基质组分和活化剂组分或其前体组分通过气相沉积在载体上制备存储磷光体层的方法,其中所述坩埚单元至少包括底部和周围 作为用于以液体形式存在于所述坩埚中的荧光体前体原料的坩埚的侧壁,其中所述坩埚单元还包括至少一个作为所述坩埚单元的一部分的烟囱和允许荧光体前体原料从所述坩埚以蒸发形式逸出的狭缝 单元以将其作为荧光体层沉积到所述载体上,以液体形式加热坩埚中的前体原料的步骤达到温度T 1,并且将所述前体原料蒸发在所述烟囱中的步骤 进行到温度T 2,其特征在于保持温度的正差异[T 2 -T 1]。
    • 10. 发明授权
    • Binderless storage phosphor screen
    • 无粘结存储荧光屏
    • US07170077B2
    • 2007-01-30
    • US11222511
    • 2005-09-08
    • Johan LamotteJean-Pierre TahonPaul Leblans
    • Johan LamotteJean-Pierre TahonPaul Leblans
    • H05B33/00C09K11/62
    • G21K4/00C09K11/7733
    • An image storage screen or panel, suitable for use in applications related with computed radiography comprises, on a support, a binderless needle-shaped stimulable CsBr:Eu phosphor layer, wherein, besides low amounts of a europium activator or dopant in favor of homogeneous distribution of said activator in the CsBr matrix, presence of well-defined amounts of rubidium halide and cesium chloride in said matrix, and, optionally, further presence of alkali metal, alkaline earth metal and/or metal earth salts, and/or, optionally, other metal salts or oxides, provides a remarkable speed increase, without loss in sharpness.
    • 适用于与计算机X线照相术有关的应用的图像存储屏幕或面板包括在支撑体上的无粘合剂针状可刺激CsBr:Eu荧光体层,其中除了少量的铕激活剂或掺杂剂之外,还有利于均匀分布 的CsBr基质中的所述活化剂,在所述基质中存在明确量的卤化铷和氯化铯,以及任选地进一步存在碱金属,碱土金属和/或金属土盐,和/或任选地, 其他金属盐或氧化物提供显着的速度增加,而没有锐度损失。