摘要:
A hot axial pressing method for sintering a ceramic powder, particularly doped Gd2O2S, comprises the step of placing a first porous body (7), the ceramic powder (9) and a second porous body (7) into a mould shell (5) supported by a support (13, 14). The ceramic powder (9) is located between the porous bodies (7). Gaseous components are evacuated from the ceramic powder (9) up to an ambient pressure of less than 0.8 bar. The porous body (7) and the ceramic powder (9) are heated to a maximum temperature of at least 900° C. and are applied to a pressure up to a maximum pressure of at least 75 Mpa. According to the invention the variation in time of the heating step and the variation in time of the pressure applying step is adjusted to each other such that the mould shell 5 is held by the porous bodies (7) and/or the ceramic powder (9) in a state where the mould shell (5) and the support (13, 14) are disconnected with respect to each other.
摘要:
A radiation detector (100) includes an array of scintillator pixels (102) in optical communication with a photosensor. The scintillator pixels (102) include a hygroscopic scintillator (104) and one or more hermetic covers (106a, 106b). A desiccant (124) may be disposed between a hermetic cover (106a) and the scintillator (104) or between the hermetic covers (106a, 106b).
摘要:
The present invention is directed towards an uniaxial pressing and heating apparatus for the production of ceramic materials comprising a heater (4), a mold (5) and a die (3), wherein a mold (5) is arranged inside a heater (4) and the mold (5) receives a die (3) at at least one opening and wherein the die (3) is actuated under pressure into the mold (5), wherein the ratio of the length of the heater (4) and the length of the mold (5) is from ≧1.5 to ≦4. The invention is further directed towards a process for the production of ceramics and towards a ceramic material.
摘要:
The present invention is directed towards an uniaxial pressing and heating apparatus for the production of ceramic materials comprising a heater (4), a mould (5) and a die (3), wherein a mould (5) is arranged inside a heater (4) and the mould (5) receives a die (3) at at least one opening and wherein the die (3) is actuated under pressure into the mould (5), wherein the ratio of the length of the heater (4) and the length of the mould (5) is from ≧1.5 to ≦4. The invention is further directed towards a process for the production of ceramics and towards a ceramic material.
摘要:
A radiation detector (100) includes an array of scintillator pixels (102) in optical communication with a photosensor. The scintillator pixels (102) include a hygroscopic scintillator (104) and one or more hermetic covers (106a, 106b). A desiccant (124) may be disposed between a hermetic cover (106a) and the scintillator (104) or between the hermetic covers (106a, 106b).
摘要:
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.
摘要:
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.
摘要:
A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided.