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.
摘要:
In a method of determining the cumulative exposure dose as captured by an adapted radiation capturing means therefor, said method comprises the steps of determining the average time lapse between exposure and read-out from ratios of read-out signals after photostimulation or thermostimulation of at least two storage phosphors and calculating the cumulative exposure dose therefrom, provided that said storage phosphors are differing in dark-decay rate.
摘要:
In a method of preparing a phosphor or scintillator layer to become deposited on a support, a vapour 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 vapour 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 Cs x Eu y X' (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 vapour 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.
摘要翻译:在制备荧光体或闪烁体层以沉积在载体上的方法中,通过作为荧光体前体原料加热坩埚,使用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Cs x Eu y X'(x +±y)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和±是整数,其中x / y大于0.25,其中±至少为2,其中X表示Br,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,条件是所述退火步骤在冷却沉积在所述载体上的所述荧光体或闪烁体层之后在环境气氛中进行; 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。
摘要:
In a method of increasing humidity stability of a storage phosphor panel having a phosphor layer coated onto a support by vapour depositing raw phosphor precursor materials of a matrix and an activator component from one or more crucible(s) and/or crucible unit(s) in a vapour deposition apparatus, after ending vapour depositing, an additional "over-annealing" step is performed in humidity conditions wherein more than 10 g of water per cubic meter of dry conditioning air is present.
摘要:
An X-ray imaging cassette having a cover side and a tube side is suitable for use in radiotherapy applications, if comprising, in admixture with storage phosphor particles in the phosphor layer of a loaded radiation image storage phosphor plate, metal or metal compound particles in form of a powder, dispersed in a binder. ■
摘要:
A radiation image storage panel comprising as a layer arrangement of consecutive layers: a support, a sublayer and a stimulable phosphor layer comprising needle-shaped stimulable phosphor crystals, wherein said sublayer is a binderless non-vapour deposited layer, at least comprising an inorganic alkali metal halide salt compound, thereby providing good adhesiveness.
摘要:
In a method of increasing humidity stability of a storage phosphor panel having a phosphor layer coated onto a support by vapour depositing raw phosphor precursor materials of a matrix and an activator component from one or more crucible(s) and/or crucible unit(s) in a vapour deposition apparatus, after ending vapour depositing, an additional "over-annealing" step is performed in humidity conditions wherein more than 10 g of water per cubic meter of dry conditioning air is present.
摘要:
In a method of preparing a storage phosphor layer on a support by vapour 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 vaporised 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 vaporised form in said chimney, proceeds up to a temperature T2, characterised in that a positive difference in temperature [T2 - T1] is maintained.