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    • 1. 发明授权
    • Deicing device for cryogenically cooled radiation detector
    • 用于低温冷却辐射探测器的除冰装置
    • US5274237A
    • 1993-12-28
    • US862084
    • 1992-04-02
    • Brian W. GallagherRobert W. Bergensten
    • Brian W. GallagherRobert W. Bergensten
    • G01T1/00
    • G01T1/00
    • An X-ray radiation detector is thermally conductively secured to the end of a cryogenically cooled copper cold finger in an evacuated atmosphere. A collimator having a conical radiation conduit at a relatively low evacuated pressure is thermally conductively secured to the end of the cold finger for passing radiation emitted by an electron microscope and reflected from a specimen to the detector in a windowless environment. The collimator and cold finger are at about the same cryogenic temperature. The detector is maintained at a temperature of a few degrees C. above that of the collimator. The collimator conduit radiation ingress aperture is dimensioned to limit gas flow to the conduit to limit moisture flow into the conduit and to the detector, the gas flow being molecular in a low pressure atmosphere. Due to the temperature differential between the detector and collimator, moisture sublimes from the detector to the collimator inside the conduit where the moisture adheres to the collimator as ice providing a relatively ice free detector for long term continuous operation.
    • X射线辐射检测器在抽空的气氛中导热地固定在低温冷却的铜冷手指的末端。 具有相对较低抽真空压力的锥形辐射导管的准直器被热传导地固定到冷指的末端,以通过电子显微镜发射的辐射并在无窗环境中将样本反射到检测器。 准直器和冷指状物处于大致相同的低温温度。 检测器保持在比准直器的温度高几摄氏度的温度。 准直器导管辐射入口的尺寸被设计成限制到导管的气流,以限制进入导管和检测器的水分流,气流在低压气氛中是分子的。 由于检测器和准直器之间的温度差异,水分从检测器升高到导管内部的准直器,其中水分作为冰粘附到准直器,为长期连续操作提供了相对无冰的检测器。
    • 2. 发明授权
    • Cryogenic cooling apparatus for radiation detector
    • 用于辐射探测器的低温冷却装置
    • US5235817A
    • 1993-08-17
    • US862050
    • 1992-04-02
    • Brian W. GallagherRobert W. Bergensten
    • Brian W. GallagherRobert W. Bergensten
    • F17C13/00F25D19/00
    • F25D19/006F17C13/006F17C2203/03F17C2203/0643F17C2223/0161
    • Parallel heat paths are provided by three nested tubes, the outer tube being of stainless steel and connected cantilevered to a housing at ambient temperature. The innermost tube forms a cold finger having a negligible temperature gradient and secured in thermal conductive isolation concentrically within an intermediate cold sleeve tube which is also concentric within the outer tube, the cold finger and cold sleeve tubes being made of copper. The tubes have a minimum diameter and specular facing surfaces to minimize radiation coupling which is the major source of heat transfer between the tubes. The two inner tubes have minimum thermal conductive coupling via thermal insulating tapered rings at one end and a thermal insulating support at the other end. A radiation detector is secured to the inner cold finger tube for receiving X-ray radiation from a specimen in an electron microscope. The other ends of the two inner tubes ar thermally conductively connected to a heat sink Dewar via braided copper straps.
    • 平行的热路由三个嵌套管提供,外管为不锈钢,并在环境温度下悬臂连接到外壳。 最内管形成具有可忽略的温度梯度的冷指,并且在热导隔离件中同心地固定在中间冷套管内,中间冷套管也在外管内同心,冷手套和冷套管由铜制成。 管具有最小直径和镜面对面的表面,以最小化辐射耦合,这是管之间的热传递的主要来源。 两个内管通过一端的隔热锥形环和另一端的绝热支撑件具有最小的热传导耦合。 辐射检测器被固定到内部冷指管,用于在电子显微镜中从样本接收X射线辐射。 两个内管的另一端通过编织铜带热导电地连接到散热器杜瓦。
    • 5. 发明授权
    • Dewar construction for cooling radiation detector cold finger
    • 杜瓦建筑冷却辐射探测器冷手指
    • US5302831A
    • 1994-04-12
    • US876848
    • 1992-04-30
    • Brian W. GallagherDuncan R. Quinn
    • Brian W. GallagherDuncan R. Quinn
    • G01Q30/00H01J37/24H01J37/244
    • H01J37/244H01J37/24
    • An inner vessel having a truncated triangular volume is spaced from an outer housing of similar shape to form a chamber therebetween. A thermally conductive strap is connected at one end to the vessel at its other end to a cold finger tube extending into the chamber. The vessel contains liquid nitrogen and is secured in spaced relationship from the outer housing by a fiberglass liquid nitrogen fill tube. An electronic assembly for processing signals generated by the detector cooled by the cold finger are aligned with the cold finger external the dewar housing. The dewar accommodates entry port angles between zero and 60.degree. for different microscopes without physical interference with the microscope housing and attachments.
    • 具有截头三角形体积的内部容器与类似形状的外部壳体间隔开,以在它们之间形成室。 导热带的一端在其另一端连接到延伸进入室的冷指管的容器。 容器含有液氮,并通过玻璃纤维液氮填充管与外壳间隔开固定。 用于处理由冷手指冷却的检测器产生的信号的电子组件与杜瓦瓶壳外部的冷手指对准。 杜瓦瓶适用于不同显微镜的入口角度在零度和60度之间,而不会对显微镜外壳和附件造成物理干扰。
    • 10. 发明授权
    • Sliding sample cell insertion and removal apparatus for x-ray analyzer
    • 用于X射线分析仪的滑动样品池插入和去除装置
    • US07873143B2
    • 2011-01-18
    • US12326123
    • 2008-12-02
    • Daniel L. DunhamJames B. QuinnBrian W. Gallagher
    • Daniel L. DunhamJames B. QuinnBrian W. Gallagher
    • G01N23/22
    • G01N23/223G01N23/2204G01N2223/076
    • A sample cell insertion and removal apparatus for an analysis instrument, including a horizontally sliding frame; a sample cell carriage movably mounted to the sliding frame, the sample cell carriage including an area to hold a sample cell; wherein upon sliding into and out of the instrument, the sample cell carriage is moved horizontally and vertically into and out of an analysis position. This instrument may include a radiation shielded enclosure into and out of which the apparatus slides, and an x-ray analysis engine which transmits x-rays upwards towards the sample cell which projects from a bottom of the apparatus. The disclosed sample cell is especially suited for an x-ray analysis engine having a focal spot requiring alignment with the sample in the sample cell.
    • 一种用于分析仪器的样品池插入和移除装置,包括水平滑动框架; 移动地安装到所述滑动框架的样品池托架,所述样品池托架包括用于保持样品池的区域; 其中,当滑入和移出仪器时,样品池托架水平和垂直地移入和移出分析位置。 该仪器可以包括进入和离开装置滑动的辐射屏蔽外壳,以及将X射线向上朝向从装置的底部突出的样品池向上传输的X射线分析引擎。 所公开的样品池特别适合于具有需要与样品池中的样品对准的焦点的x射线分析引擎。