摘要:
There is provided a photostimulable phosphor according to formula (I): Ba.sub.1-x-y-p-3q-z Sr.sub.x M.sub.y.sup.2+ M.sub.2p.sup.1+ M.sub.2q.sup.3+ F.sub.2-a-b Br.sub.a I.sub.b :zEu wherein: M.sup.1+ is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs; M.sup.2+ is at least one metal selected from the group consisting of Ca Mg and Pb; M.sup.3+ is at least one metal selected from the group consisting of Al, Ga, In, Tl, Sb, Bi, Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; 0.ltoreq.x.ltoreq.0.30, 0.ltoreq.y.ltoreq.0.10, 0.ltoreq.p.ltoreq.0.3, 0.ltoreq.q.ltoreq.0.1, 0.05.ltoreq.a.ltoreq.0.76, 0.20.ltoreq.b.ltoreq.0.90, a+b
摘要翻译:提供根据式(I)的可光激发的荧光体:Ba1-xyp-3q-zSrxMy2 + M2p1 + M2q3 + F2-a-bBraIb:zEu其中:M1 +为至少一种选自Li,Na, K,Rb和Cs; M2 +是选自Ca Mg和Pb中的至少一种金属; M3 +是选自Al,Ga,In,Tl,Sb,Bi,Y,La,Ce,Pr,Nd,Sm,Gd,Tb,Dy,Ho,Er,Tm,Yb中的至少一种金属, 鲁; 0 = x = 0.30,0 = y = 0.10,0 = p 0.3,0 = 0.1,0.05 = 0.20 = b = 0.90,a + b <1.00和10-6 = z <0.2。
摘要:
A phosphor screen is provided comprising a satiblizer being an organic compound or an oligomeric or polymeric compound comprising moieties corresponding to the following general formula I: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represent a substituted or unsubstituted alkyl- or aryl group,R.sup.5 represents hydrogen or a substituted or unsibstituted alkyl group andZ represents the atoms necessary to form a substituted or unsubstituted 5 to 8 membered ring.
摘要:
A phosphor screen is provided, characterised in that said screen comprises at least one organozinc compound corresponding to the following general formula I: ##STR1## wherein: A=either carbon or phosphorusY=--OR.sup.6, --NR.sup.7 R.sup.8, alkyl or aryl, wherein R.sup.6, R.sup.7 and R.sup.8 each independently represent a substituted or unsubstituted alkyl- or aryl group, or wherein R.sup.7 and R.sup.8 together form a ringstructuren=1 when A is carbonn=2 when A is phosphorus.
摘要:
A method for preparing metal halide phosphor particles, e.g. barium- and/or strontium-containing halide phosphor particles, of a selected particle size range with improved powder flowability which method comprises the following steps:(1) firing the raw mixture materials of said phosphor to produce a sintered phosphor mass that is pulverized,(2) mixing said pulverized phosphor mass, optionally after one or more firings, in a liquid mainly containing a water-miscible organic solvent with an organic acid dissolved therein, said acid being capable of forming with metal contained in the phosphor a salt the solubility of which in water at 20.degree. C. is less than 0.5 g per 100 ml, and(3) subjecting the thus treated phosphor particles in wet and/or in dry state to a separation treatment to collect phosphor particles having a grain size smaller than 40 .mu.m but larger than 2 .mu.m.
摘要:
There is provided a photostimulable phosphor according to formula (I)Ba.sub.1-x-y-p-3q-z Sr.sub.x M.sub.y.sup.2+ M.sub.2p.sup.1+ M.sub.2q.sup.3+ F.sub.2-a-b Br.sub.a I.sub.b :zEuwherein:M.sup.1+ is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs;M.sup.2+ is at least one metal selected from the group consisting of Ca Mg and Pb;M.sup.3+ is at least one metal selected from the group consisting of Al, Ga, In, Tl, Sb, Bi, Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu;0
摘要:
A photostimulable X-ray energy absorbing halosilicate phosphor, characterized in that said phosphor contains as host metal at least one alkaline earth metal, as halogen at least one member selected from the group consisting of Cl, Br and I, as dopant Eu.sup.2+ and lithium as co-dopant.
摘要:
The present invention concerns a method for the treatment of stimulable phosphors and/or screens for use in diagnosis, in particular medical radiography. The method comprises subjecting the stimulable phosphors and/or screens to an epoxide containing gaseous compound, promptly following their manufacture. By applying the method according to the invention yellowing of the stimulable phosphors and/or screens is prevented in a safe and efficient manner; thereby the disadvantages known as such resulting from such yellowing will not occur.
摘要:
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.
摘要:
A photo- or electron beam curable composition comprising a polymer or copolymer and a (meth)acrylate type monomer having at least three (meth)acrylate group per monomer molecule and at least one ethyleneoxy group per (meth)acrylate group in said monomer is suitable for use in the top-coat layer of a photostimulable phosphor screen comprising a support, a storage phosphor layer and an outermost top-coat, more particularly when said top-coat comprises a cellulose ester polymer.
摘要:
A device comprises at least one organophosphonium transition metal dye or is provided with a filter, comprising at least one organophosphonium transition metal dye, wherein, in a particular embodiment said device is selected from the group consisting of a scanner, a digitizer, a display and a photographic device.