COMPOSITE NUCLEAR FUEL PELLET
    1.
    发明申请
    COMPOSITE NUCLEAR FUEL PELLET 审中-公开
    复合核燃料颗粒

    公开(公告)号:US20120183116A1

    公开(公告)日:2012-07-19

    申请号:US13387621

    申请日:2010-07-27

    IPC分类号: G21C3/00 G21C21/00

    CPC分类号: G21C3/58 G21C3/623 Y02E30/38

    摘要: A composite nuclear fuel pellet comprises a composite body including a UO2 matrix and a plurality of high aspect ratio particies dispersed therein, where the high aspect ratio particies have a thermal conductivity higher than that of the UO2 matrix. A method of making a composite nuclear fuel pellet includes combining UO2 powder with a predetermined amount of high aspect ratio particles to form a combined powder, the high aspect ratio particles having a thermal conductivity higher than that of the UO2 powder; mixing the combined powder in a solvent to disperse the high aspect ratio particles in the UO2 powder; evaporating the solvent to form a dry mixture comprising the high aspect ratio particles dispersed in the UO2 powder; pressing the dry mixture to form a green body; and sintering the green body to form the composite fuel pellet.

    摘要翻译: 复合核燃料颗粒包括包含分散在其中的UO2基体和多个高纵横比颗粒的复合体,其中高纵横比颗粒的导热率高于UO2基体的热导率。 制备复合核燃料颗粒的方法包括将UO2粉末与预定量的高纵横比颗粒结合以形成组合粉末,所述高纵横比颗粒的导热率高于UO2粉末; 将合并的粉末在溶剂中混合以分散UO2粉末中的高纵横比颗粒; 蒸发溶剂以形成包含分散在UO 2粉末中的高纵横比颗粒的干混合物; 压干混合物形成一个生坯; 并烧结生坯以形成复合燃料颗粒。

    X-ray backscatter imaging of nuclear materials
    2.
    发明授权
    X-ray backscatter imaging of nuclear materials 有权
    核材料的X射线后向散射成像

    公开(公告)号:US08848871B2

    公开(公告)日:2014-09-30

    申请号:US13288168

    申请日:2011-11-03

    IPC分类号: G01N23/203

    CPC分类号: G01N23/203

    摘要: The energy of an X-ray beam and critical depth are selected to detect structural discontinuities in a material having an atomic number Z of 57 or greater. The critical depth is selected by adjusting the geometry of a collimator that blocks backscattered radiation so that backscattered X-ray originating from a depth less than the critical depth is not detected. Structures of Lanthanides and Actinides, including nuclear fuel rod materials, can be inspected for structural discontinuities such as gaps, cracks, and chipping employing the backscattered X-ray.

    摘要翻译: 选择X射线束的能量和临界深度来检测原子序数Z为57或更大的材料中的结构不连续性。 通过调整阻挡反向散射辐射的准直器的几何形状来选择临界深度,从而不会检测到源自小于临界深度的深度的背散射X射线。 可以检查镧系元素和锕系元素(包括核燃料棒材料)的结构,使用后向散射X射线的结构不连续性,如间隙,裂纹和碎裂。

    MAGNETIC FIELD SIMULATOR AND RELATED METHODS FOR SIMULATING THE EARTH'S MAGNETIC FIELD
    3.
    发明申请
    MAGNETIC FIELD SIMULATOR AND RELATED METHODS FOR SIMULATING THE EARTH'S MAGNETIC FIELD 审中-公开
    用于模拟地球磁场的磁场模拟器及相关方法

    公开(公告)号:US20090302983A1

    公开(公告)日:2009-12-10

    申请号:US12135771

    申请日:2008-06-09

    IPC分类号: H01F3/00

    CPC分类号: G01V3/081 H01F7/0273

    摘要: Apparatus and methods for simulating the Earth's magnetic field. The apparatus includes a spherical structure having a rotational axis and a molten metal therewithin. A support is coupled to the spherical structure so that the spherical structure is rotatable about a rotational axis. Rotation of the spherical structure generates inertial forces in the molten metal. The apparatus may include one or more magnetometers operatively coupled to an outer surface of the spherical structure for measuring a magnetic field generated by the spherical structure.

    摘要翻译: 用于模拟地球磁场的装置和方法。 该装置包括具有旋转轴线的球形结构和其中的熔融金属。 支撑件耦合到球形结构,使得球形结构能够围绕旋转轴线旋转。 球形结构的旋转在熔融金属中产生惯性力。 该装置可以包括一个或多个可操作地耦合到球形结构的外表面的磁力计,用于测量由球形结构产生的磁场。