Abstract:
Gas discharge lamp comprises a gas discharge vessel filled with a gas filling suitable for a gas discharge emitting vacuum ultraviolet (VUV) radiation; a luminescent coating containing a down-conversion luminescent material with a sensitizer; and devices for igniting and maintaining a gas discharge. The down-conversion luminescent material contains a first lanthanide ion, a second lanthanide ion and a sensitizer selected from copper (Cu (I)), silver (Ag (I)), gold (Au (I)), zinc (Zn (II)), gallium (Ga (III)), indium (In (III)), thallium (Tl (III)), germanium (Ge (IV)), tin (Sn (IV)) or lead (Pb (IV)) ions. An Independent claim is also included for the down-conversion luminescent material. Preferred Features: The host lattice is a fluoride. The down-conversion luminescent material contains a co-activator in an amount of 0.5 mol.%.
Abstract:
A radiation sensitive detector array (114) including a detector (116) with a scintillator (122, 202, 502, 504, 602, 606, 702, 704, 706) and a photo-sensor (120, 206, 508, 510, 612, 614, 708, 710, 712), including an optical photon sensitive region (206, 512, 514, 616, 618, 708, 710, 712) in optical communication with the scintillator array, wherein the detector also includes one or more wavelength shifters.
Abstract:
The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises a GOS material (20) for generating scintillation light depending on the detected radiation (25), an optical filter (24) for reducing the intensity of a part of the scintillation light having a wavelength being larger than 650 nm, and a detection unit (21) for detecting the filtered scintillation light. Because of the filtering procedure relatively slow components, i.e. components corresponding to a relatively large decay time, of the scintillation light weakly constribute to the detection process or are not detected at all by the detection unit, thereby increasing the temporal resolution of the detection apparatus. The resulting fast detection apparatus can be suitable for kVp-switching computed tomography systems.
Abstract:
Low cost large area photodetector arrays are provided. In a first embodiment, the photodetectors comprise an inorganic photoelectric conversion material formed in a single thick layer of material. In a second embodiment, the photodetectors comprise a lamination of several thin layers of an inorganic photoelectric conversion material, the combined thickness of which is large enough to absorb incoming x-rays with a high detector quantum efficiency. In a third embodiment, the photodetectors comprise a lamination of several layers of inorganic or organic photoelectric conversion material, wherein each layer has a composite scintillator coating.
Abstract:
The present invention is directed to a Gd 2 O 2 S: M fluorescent ceramic material with a very short afterglow, wherein M represents at least one element selected from the group Pr, Tb, Yb, Dy, Sm and/or Ho and the Gd 2 O 2 S: M fluorescent ceramic material comprises further: europium of = 1 wt. ppm based on Gd 2 O 2 S, and cerium of = 0.1 wt. ppm to = 100 wt. ppm based on Gd 2 O 2 S, wherein the content of cerium is in excess of the content of europium with a ratio of europium to cerium of 1 : l0 to l : 150.
Abstract translation:本发明涉及具有非常短的余辉的Gd 2 O 2 S 2 M荧光陶瓷材料,其中M表示选自Pr, Tb,Yb,Dy,Sm和/或Ho和Gd 2 O 2 S 2 M荧光陶瓷材料进一步包括:铕= 1wt。 基于Gd 2 O 2 S的ppm和= 0.1重量%的铈。 ppm至= 100重量% ppm,基于Gd 2 O 2 S,其中铈的含量超过铕的含量,铕与铈的比例为1:10至1: 150。
Abstract:
The invention relates to an illumination system with a material having a low or negative thermal expansion coefficient in order to compensate for the thermal expansion of the further materials present in the illumination system.
Abstract:
A device (100) for activating a physiologically effective substance (101) by ultrasonic waves (103, 105), the device comprising an ultrasonic transducer (102) adapted to generate ultrasonic waves (103), a focusing element (104) adapted to focus the generated ultrasonic waves (103), and an adjustment unit (107) adapted to adjust a position (106) to which the focusing element (105) focuses the generated ultrasonic waves (103) in a manner that the focused ultrasonic waves (103) are bringable in interaction with the physiologically effective substance (101) at the adjusted position (106).
Abstract:
A scintillation element comprises a scintillation material, and a reflective layer, wherein the reflective layer is formed as an intrinsic part of the scintillation material. Preferably, a plurality of scintillation elements may be arranged to form a scintillation array. A method for producing a scintillation element comprises providing a scintillation material, and producing a reflective layer at the scintillation material by exposing the scintillation material to physical and/or chemical conditions in such a way that the reflective layer is formed out of a part of the scintillation material.