摘要:
A scintillator plate has a radiation-permeable substrate on which is applied a scintillator layer made of copper iodide that is formed from spicular crystals. The scintillator layer has an emission maximum in the red spectral range. The scintillator layer of the scintillator plate has a high emission power in the near-infrared range.
摘要:
A cathode has an emission layer that thermionically emits electrons upon exposure with a laser beam. The material of the emission layer has a product of density (ρ), measured in kg m 3 , heat capacity (Cp), measured in J kg K and heat conductivity (λ), measured in W mK that is, at room temperature, maximally 500,000 J 2 m 4 K 2 s . Such a cathode has an improved thermionic emission of electrons.
摘要翻译:阴极具有在用激光束曝光时热离子发射电子的发射层。 发射层的材料具有密度(&rgr。)的乘积,以kg m 3测量,热容量(Cp),以J kg·K K测量的热导率(λ),以W mK测量,即在 室温最大为500,000J 2 m 4 K 2 s。 这种阴极具有改进的电子的热离子发射。
摘要:
The invention describes a dispenser (1) for automatically dispensing semi-fluid media, in particular toothpaste, from a tube with a mouthpiece, comprising a housing (2) with an orifice (3) and having at least one portion measuring unit (4) for the tube in the interior, a switch (6), a motor (20), a drive mechanism (5) and a control unit (7), whereby a brush is positioned in the orifice (3) in order to charge it with semi-fluid medium. In order to transport the brush automatically from the orifice (3) in the direction of the mouthpiece of the tube, at least one drive mechanism (5) is provided on a positioning mechanism (8), in particular a gear (33) with at least one driver (34).
摘要:
An X-ray diagnostic apparatus has a luminescent storage screen for the latent storage of an X-ray image, an X-ray exposure apparatus for producing an X-ray beam, a readout apparatus system with which the storage luminescent screen is excited to luminescence by scanning with a source of radiation, a detector for the acquisition of the light emitted by the storage luminescent screen, and an image playback system. For the scanning, the storage luminescent screen is guided through an opening of a rectangular supporting structure and is held in the scanning region by air bearings attached to the supporting structure on both sides of the opening. A line-shaped source of stimulation radiation and a line-shaped light detector are mounted to the supporting structure.
摘要:
An x-ray generating system has an x-ray source arranged in a coolant-filled housing, and a phase change store which contains a phase change material disposed in the coolant in the housing.
摘要:
An optical multi-port element with an acousto-optical modulator (AOM) has at least two monomode optical waveguide connections, at one side thereof. The end surfaces of the waveguides disposed in the focal plane of a lens situated between the optical waveguides and the acousto-optical modulator. In order to obtain a construction which can be adjusted in a simple manner and which has low attenuation, with a small overall length, it is provided that at least one side of the AOM (1) a single lens (2,3,31) is disposed with its optical axis aligned to the transmission axis of the AOM (1), and that the optical wave-guides (4 to 6, 18 to 20 or 27,28) are disposed with their axes parallel to one another and spaced from the optical axis of the lens (2,3,31) in such a manner that parallel beams (14 to 17), leading from the lens (2,3,31) to the AOM (1), are directed to the active region of the AOM (1) at the Bragg angle to the optical axis.
摘要:
In a movable conveyor belt storage installation including a belt storage means (4), conveyor belt support structures (29) following the belt storage means (4), and a movable takeover car (7) including a deflection means (43) for the conveyor belt and a takeup chute (8) for taking over excavated material, the belt storage means (4) is comprised of at least two segments (13, 20, 22, 26) which are connected with one another so as to be pivotable about an axis extending transversely to the belt running direction and passing through the plane of the floor (31), wherein at least a portion of the support structures (29) are capable of being carried along in or on the takeover car (7).
摘要:
A radiation converter has a luminophore layer formed by needle-shaped crystals applied on a substrate, the crystals being composed of CsI. doped with Tl. The emission spectrum is modified to obtain smaller values by making the Tl content between 200 ppm and 2,000 ppm.
摘要:
A scintillator plate has a radiation permeable and moisture-impermeable substrate, a scintillator on the substrate, a first transparent organic layer that covers the scintillator, a second transparent organic layer arranged on the first transparent organic layer, and a transparent inorganic layer that is arranged on the second transparent organic layer.
摘要:
An x-ray unit has an x-ray radiator having an anode that emits x-rays upon being struck by electrons, a cathode that thermionically emits electrons upon irradiation thereof by a laser beam, electrical connections for application of a high voltage between the anode and the cathode to accelerate the emitted electrons toward the anode as an electron beam, a vacuum housing that can be rotated around an axis, an insulator that is part of the vacuum housing and that separates the cathode from the anode, a drive that rotates the vacuum housing around its axis, an arrangement for cooling components of the x-ray radiator, and an arrangement that directs the laser beam from a stationary source, arranged outside of the vacuum housing, onto a spatially stationary laser focal spot on the cathode and that focuses the laser beam. The x-ray unit furthermore has a control circuit with which an operating property of the x-ray unit is adjusted and at least one measurement element for measurement of a measurement quantity is effectively correlated with the temperature of the cathode. The control circuit adjusts the operating property dependent on the measurement of the measurement quantity.