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    • 2. 发明公开
    • ZnO SINGLE CRYSTAL AS SUPER HIGH SPEED SCINTILLATOR AND METHOD FOR PREPARATION THEREOF
    • ZNO-EINKRISTALL ALS SUPERSCHNELLER SZINTILLATOR UND HERSTELLUNGSVERFAHRENDAFÜR
    • EP1754981A1
    • 2007-02-21
    • EP05741568.9
    • 2005-05-20
    • Fukuda X'Tal Laboratory
    • FUKUDA, TsuguoYOSHIKAWA, AkiraOGINO, Hiraku
    • G01T1/202C09K11/00C09K11/08C09K11/55C09K11/62C09K11/64C30B7/10C30B29/16G01T1/20
    • G21K4/00C09K11/565C09K11/595C09K11/623C09K11/642C09K11/662C09K11/7702C30B29/16C30B33/00
    • [PROBLEMS]
      To find out a crystalline material for a high speed scintillator in place of BaF 2 and the like, and a method for producing the material at a low cost.
      [MEANS FOR SOLVING PROBLEMS]
      A single crystal of (Zn 1-x M x )O 1+x (M: Al, Ga, In, Y, Sc, La, Gd, Lu) (x = 0 to 0.0500), (Zn 1-x M' x )O 1+2x (M': Si, Ge, Sn, Pb)(x = 0 to 0.0250) or (Zn 1-x Cd x )O (x = 0 to 0.0500) is used as a scintillator. Defects of a ZnO single crystal can be reduced by using a platinum inner cylinder in order for a solution not to directly contact with an autoclave, for reducing impurities in the ZnO single crystal and precluding impurities interfering with scintillation, and by using LiOH and KOH as a mineralizer. ZnO can be doped with Al 2 O 3 , Ga 2 O 3 , In 2 O 3 , Si, Cd or the like by adding those materials to a starting material for the hydrothermal synthesis. The doping amounts can be controlled by changing charging amounts thereof. The doping of those elements inhibits the emission of visible lights, which results in the efficient transformation of the excitation energy to the luminescence from a free exciton.
    • 为了找到用于代替BaF 2等的高速闪烁体的结晶材料,以及低成本地制造材料的方法。 (Zn 1-x M x)O 1 + x(M:Al,Ga,In,Y,Sc,La,Gd,Lu)的单晶(x = 0〜0.0500),( 使用Zn 1-x M'x)O 1 + 2x(M':Si,Ge,Sn,Pb)(x = 0〜0.0250)或(Zn 1-x Cd x)O(x = 0〜0.0500) 作为闪烁体。 可以通过使用铂内筒来降低ZnO单晶的缺陷,以使溶液不与高压釜直接接触,以减少ZnO单晶中的杂质并排除杂质干扰闪烁,并且通过使用LiOH和KOH作为 矿化剂 通过将这些材料添加到水热合成的起始材料中,可以掺杂Al 2 O 3,Ga 2 O 3,In 2 O 3,Si,Cd等。 掺杂量可以通过改变其充电量来控制。 这些元素的掺杂抑制可见光的发射,这导致激发能量有效地从游离激子转变为发光。
    • 10. 发明公开
    • X-ray phosphors and the process for producing the same
    • LeuchtstoffefürRöntgenstrahlungund Verfahren zu deren Herstellung。
    • EP0202875A2
    • 1986-11-26
    • EP86303729.7
    • 1986-05-15
    • Nichia Kagaku Kogyo K.K.
    • Nakajima, ShigeharuShinomiya, GenichiTakeda, MizuhoChikutei, Satoru
    • C09K11/78
    • C09K11/7768C09K11/7702C09K11/7703C09K11/7767C09K11/7769C09K11/7785C09K11/7786
    • A method of producing rare earth tantalate and/or earth niobate phosphors that emit light under X-ray excitation, the method being characterized by the addtion of diadic metal(s) and alkali metal(s), which are mixed and processed by calcination with basic material.
      A phosphor produced by the method of the present invention is represented by the general formula (1)
      in this formula, M" being at least one kind of diadic metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn and Cd, M' being at least one kind of alkali metal selected from the group consisting of Li, Na and K, Ln being at least one kind of element selected from the group consisting of Y, Gd, La, and Lu, D containing either or both of Ta and Nb, and R being at least one selected from the group consisting of Tm, Pr, Sm, Eu, Tb, Dy, Yb or the base substance being self-activating, and y being a numerical value in the range 1 x 10-5≦y≦1, z being a value in range 1 x 10 -4 ≦z≦0.1, and x being a numerical value in the range O≦x≦0.05.
      In the X-ray intensifing screen according to the present invention, the phosphor represented by the abovementioned general formula (I) is adhered in the dispersed state onto a support by means of a binding agent.
    • 一种生产在X射线激发下发光的稀土钽酸盐和/或铌酸铌荧光体的方法,其特征在于添加二元金属和碱金属,其通过煅烧而混合和加工, 基本材料 通过本发明的方法制造的荧光体由通式(I)Ln1-x-(2/3)y-(1/3,zM sec yM min zDO4:xR 3+(I ),M sec为选自Be,Mg,Ca,Sr,Ba,Zn和Cd中的至少一种二价金属,M min为选自以下的至少一种碱金属: 的Li,Na和K,Ln是选自由Y,Gd,La和Lu组成的组中的至少一种元素,其含有Ta和Nb中的一种或两种,R是选自下组中的至少一种: 由Tm,Pr,Sm,Eu,Tb,Dy,Yb组成,或者是自激活的基体,y是1×10 -5的范围内的数值,y = 1,z 是范围1×10 <4>