Magnetic memory having shape anisotropic magnetic elements
    1.
    发明授权
    Magnetic memory having shape anisotropic magnetic elements 失效
    具有形状各向异性磁性元件的磁记忆体

    公开(公告)号:US5741435A

    公开(公告)日:1998-04-21

    申请号:US512555

    申请日:1995-08-08

    摘要: A static magnetic memory includes a layer having a plurality of vertically oriented and shape-anisotropic elongated ferromagnetic particles. A plurality of writing conductors are adjacent the layer, and the conductors selectively apply magnetic fields to selected regions of the layer by directing electrical current to magnetize the particles in an up or down direction. Static reading means detect the direction of magnetization. The particles may include a soft magnet portion and a hard magnet portion. In another preferred embodiment, a material and a method of making same includes providing a matrix full of elongated holes, depositing a first magnetic material having a first coercivity into the holes, and then depositing a second magnetic material having a second coercivity into the holes to form a composite elongated particle in each hole.

    摘要翻译: 静磁存储器包括具有多个垂直取向和形状各向异性的细长铁磁颗粒的层。 多个写入导体与层相邻,并且导体通过引导电流在上或下方向上磁化颗粒而选择性地将磁场施加到层的选定区域。 静态读数意味着检测磁化方向。 颗粒可以包括软磁体部分和硬磁体部分。 在另一优选实施例中,材料及其制造方法包括提供充满细长孔的矩阵,将具有第一矫顽力的第一磁性材料沉积到孔中,然后将具有第二矫顽力的第二磁性材料沉积到孔中 在每个孔中形成复合细长颗粒。

    Micro-dynode integrated electron multiplier
    5.
    发明授权
    Micro-dynode integrated electron multiplier 失效
    微倍增极集成电子倍增器

    公开(公告)号:US06384519B1

    公开(公告)日:2002-05-07

    申请号:US08960759

    申请日:1997-10-30

    IPC分类号: H01J4320

    CPC分类号: H01J43/246 H01J43/22

    摘要: A microdynode electron multiplier provides numerous microchannels extending parallel to one another through a layered structure incorporating insulating spacer layers and dynode layers which either incorporate a conductive electrode layer or are contiguous with a conductive electrode layer. The dynode layers include materials with high electron emissivity. The dynode layers can be biased to different electrical potentials to provide a potential gradient along the length of each microchannel. Multi-stage electron multiplication provides high gain. The device desirably is formed as a monolithic, sealed structure with a cathode structure such as a photocathode and an anode structure. The device can provide a multi pixel imaging device of extremely high sensitivity and resolution.

    摘要翻译: 微型电子电子倍增器通过结合有绝缘间隔层和倍增极层的分层结构彼此平行延伸,提供了许多微通道,其中结合有导电电极层或与导电电极层邻接。 倍增极层包括具有高电子发射率的材料。 倍增极层可以被偏置到不同的电势以沿着每个微通道的长度提供电位梯度。 多级电子倍增提供高增益。 该装置理想地形成为具有诸如光电阴极和阳极结构的阴极结构的整体式密封结构。 该器件可以提供极高灵敏度和分辨率的多像素成像设备。

    Scintillating articles and method of making the same
    7.
    发明授权
    Scintillating articles and method of making the same 失效
    闪烁的文章和制作方法

    公开(公告)号:US5168540A

    公开(公告)日:1992-12-01

    申请号:US692138

    申请日:1991-04-26

    摘要: A scintillating article comprising a substrate coated with an inorganic scintillating material comprising a doped or undoped material selected from the group consissting of barium fluoride, calcium fluoride, zinc oxide, zinc sulfide, zinc silicate, bismuth germanate, fast cathode ray tube phosphors, yttrium silicate, rare earth silicates, orthosilicates, and mixtures thereof. Also disclosed is an appertaining method of forming such a scintillating article, comprising depositing the inorganic scintillating material by chemical vapor deposition (CVD). In a particularly advantageous embodiment, the substrate is of fibrous form, e.g., a quartz optical quality fiber, which is coated with a scintillating material such as barium fluoride. The scintillating articles of the invention are usefully employed as detectors for ionizing particles in high energy physics applications, such as radiation track imaging and tracking chambers, calorimetry, synchrotron radiation electron detectors, and pixel detectors for active targets, as well as detector elements and high energy particle accelerators and other high rate systems.

    摘要翻译: 一种闪烁制品,其包括涂覆有无机闪烁材料的基材,其包含掺杂或未掺杂的材料,所述材料选自氟化钡,氟化钙,氧化锌,硫化锌,硅酸锌,铋酸铋,快速阴极射线管荧光体,硅酸钇 ,稀土硅酸盐,原硅酸盐及其混合物。 还公开了形成这种闪烁制品的一种方法,其包括通过化学气相沉积(CVD)沉积无机闪烁材料。 在特别有利的实施方案中,基材是纤维状的,例如石英光学质量纤维,其被诸如氟化钡的闪烁材料涂覆。 本发明的闪烁物品被用作高能物理应用中用于电离粒子的检测器,例如辐射轨道成像和跟踪腔,量热法,同步加速器辐射电子检测器和用于有源靶的像素检测器以及检测器元件和高 能量粒子加速器等高速系统。