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57 条记录 (耗时 0.019 秒)

    Superconducting magnetic resonance r.f. probe coil
    23.
    发明公开
    Superconducting magnetic resonance r.f. probe coil 审中-公开
    用于磁共振超导RF探针线圈

    公开(公告)号：EP1486793A3

    公开(公告)日：2005-09-07

    申请号：EP04012588.2

    申请日：2004-05-27

    申请人： Hitachi, Ltd.

    发明人： Takagi, Kazumasa ,  Saitoh, Kazuo ,  Ochi, Hisaaki ,  Morita, Hiroshi ,  Kiryu, Masae ,  Okada, Michiya

    IPC分类号： G01R33/34

    CPC分类号： G01R33/34053 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34092 ,  G01R33/3456

    摘要： The invention provides nuclear magnetic resonance equipment realizing improved sensitivity of a probe for receiving a free induction decay (FID) signal in nuclear magnetic resonance (NMR) spectroscopy in a high frequency band of 600 MHz or higher. By manufacturing a solenoid coil of a higher filling factor by using a superconductor of extremely low resistance to high frequency current, sensitivity is increased. A superconducting thin film made of magnesium diboride (MgB 2 ) formed on a donut plate-type substrate is disposed so that the film surface becomes parallel with the uniform magnetic field. The object is realized by a probe made by a solenoid coil formed by connecting a plurality of coil parts by capacitive coupling via a normal metal lead.

    NMR analyzer comprising a superconducting coil system
    24.
    发明公开
    NMR analyzer comprising a superconducting coil system 有权
    NMR分析仪与超导线圈系统

    公开(公告)号：EP1361454A3

    公开(公告)日：2004-10-27

    申请号：EP02028364.4

    申请日：2002-12-17

    申请人： Hitachi, Ltd.

    发明人： Aihara, Katsuzou ,  Okada, Michiya ,  Kakugawa, Shigeru ,  Morita, Hiroshi ,  Wakuda, Tsuyoshi

    IPC分类号： G01R33/3815

    CPC分类号： G01R33/34046 ,  G01R33/34053 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/44 ,  G01R33/4808

    摘要： A first room-temperature space is formed penetrating through a cryostat along a center axis of a split-type multi-layer cylindrical superconducting coil system which has a ratio of the maximum empirical magnetic field to the central magnetic filed of not larger than 1.3 and is horizontally arranged such that the center axis of the coil is in the horizontal direction, a room-temperature shim coil system is arranged in said first room-temperature space to improve the homogeneity of the magnetic field, a second room-temperature space is formed penetrating through the cryostat and passing through the center of said split gap in the vertical direction, and a sample to be measured and an NMR probe having a solenoid-type probe coil are inserted in said second room-temperature space. Further, the NMR analyzer has a new function constituted by a system for irradiating and detecting the electromagnetic waves having wavelengths of shorter than 0.1 mm.

    Probe for NMR apparatus using magnesium diboride
    25.
    发明公开
    Probe for NMR apparatus using magnesium diboride 有权
    二硼化镁的样品探针用于NMR设备

    公开(公告)号：EP1361452A3

    公开(公告)日：2004-10-13

    申请号：EP02028365.1

    申请日：2002-12-17

    申请人： Hitachi, Ltd.

    发明人： Morita, Hiroshi ,  Okada, Michiya ,  Aihara, Katsuzou

    IPC分类号： G01R33/34 ,  H01F6/06

    CPC分类号： G01R33/34053 ,  G01R33/34023 ,  G01R33/34069 ,  G01R33/34092 ,  H01F6/06

    摘要： To provide a probe coil for an NMR apparatus which can transmit and receive high frequency radio waves with improved Q-factor and S/N ratio. As a measure, the probe coil for an NMR apparatus is provided as of a solenoid type formed of magnesium diboride superconductor. As another measure, the probe coil for an NMR apparatus has a plurality of coils using magnesium diboride superconductors connected in series. As further another measure, there is used a magnesium diboride superconductor mixed with metal. As still further another measure, the probe coil for an NMR apparatus is formed by using a single metal selected from gold, silver, copper, aluminum, iron, platinum, palladium, nickel, stainless steel, chromium, magnesium, tantalum, niobium, titanium, zinc, beryllium, tungsten, or cobalt, or an alloy including a plurality thereof.

    Superconductor connection structure
    26.
    发明公开
    Superconductor connection structure 有权
    超导体的连接结构

    公开(公告)号：EP1276171A3

    公开(公告)日：2004-04-07

    申请号：EP02003113.4

    申请日：2002-02-13

    申请人： Hitachi, Ltd.

    发明人： Morita, Hiroshi ,  Tanaka, Kazuhide ,  Suzuki, Yasuo ,  Okada, Michiya

    IPC分类号： H01R4/68 ,  H01L39/02 ,  H01L39/14

    CPC分类号： H01L39/02 ,  H01R4/68 ,  Y10T29/49014

    摘要： Electrical connection of superconducting lines can be achieved by using a low-melting point metal, by mechanical contact of superconducting lines or by welding. According to these methods, however, critical current and critical magnetic field at the connection point are low, and stable connection in a superconducting state has been difficult. The present invention solves these problems and provides a structure and method for connecting superconducting lines (1a, 1b). The present invention provides high-performance, high-stability connection of superconducting lines through magnesium diboride (MgB 2 ) powder (2) arranged between superconducting lines (1a, 1b).

    NMR analyzer comprising a superconducting coil system
    27.
    发明公开
    NMR analyzer comprising a superconducting coil system 有权
    NMR-Analysator mit supraleitendem Spulensystem

    公开(公告)号：EP1361454A2

    公开(公告)日：2003-11-12

    申请号：EP02028364.4

    申请日：2002-12-17

    申请人： Hitachi, Ltd.

    发明人： Aihara, Katsuzou ,  Okada, Michiya ,  Kakugawa, Shigeru ,  Morita, Hiroshi ,  Wakuda, Tsuyoshi

    IPC分类号： G01R33/3815

    CPC分类号： G01R33/34046 ,  G01R33/34053 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/44 ,  G01R33/4808

    摘要： A first room-temperature space is formed penetrating through a cryostat along a center axis of a split-type multi-layer cylindrical superconducting coil system which has a ratio of the maximum empirical magnetic field to the central magnetic filed of not larger than 1.3 and is horizontally arranged such that the center axis of the coil is in the horizontal direction, a room-temperature shim coil system is arranged in said first room-temperature space to improve the homogeneity of the magnetic field, a second room-temperature space is formed penetrating through the cryostat and passing through the center of said split gap in the vertical direction, and a sample to be measured and an NMR probe having a solenoid-type probe coil are inserted in said second room-temperature space. Further, the NMR analyzer has a new function constituted by a system for irradiating and detecting the electromagnetic waves having wavelengths of shorter than 0.1 mm.

    摘要翻译： 第一室温空间形成为沿分离式多层圆柱形超导线圈系统的中心轴穿过低温恒温器，该分离式多层圆柱形超导线圈系统的最大经验磁场与中心磁场的比值不大于1.3， 水平布置成使得线圈的中心轴线处于水平方向，室温垫片线圈系统布置在所述第一室温空间中以改善磁场的均匀性，形成第二室温空间穿透 通过低温恒温器并沿垂直方向穿过所述分裂间隙的中心，并且将待测量样品和具有螺线管型探针线圈的NMR探针插入所述第二室温空间。 此外，NMR分析仪具有由用于照射和检测波长小于0.1mm的电磁波的系统构成的新功能。

    Oxide system superconducting tape-shaped wire and method of manufacturing the same
    29.
    发明公开
    Oxide system superconducting tape-shaped wire and method of manufacturing the same 失效
    Bandförmigessupraleitendes Oxydsystem und Verfahren zu seiner Herstellung

    公开(公告)号：EP0710993A1

    公开(公告)日：1996-05-08

    申请号：EP95117425.9

    申请日：1995-11-06

    申请人： HITACHI, LTD.

    发明人： Okada, Michiya ,  Tanaka, Kazuhide ,  Fukushima, Keiji

    IPC分类号： H01L39/24

    CPC分类号： H01L39/248

    摘要： In an oxide system superconducting tape-shaped wire (7) long enough for practical application, a compressing process step is performed before a partial melting process step. The density of an oxide system superconductor (1) of the super-conducting tape-shaped wire (7) is heightened more than 90 % of the theoretical density. It is possible to manufacture the superconducting tape-shaped wire (7) long enough for practical application and an oxide system superconducting magnet having 5 T class can be obtained. The superconducting tape-shaped wire (7) has the performance during the magnetic field similarly to the performance of a short sample wire.

    摘要翻译： 在实际应用足够长的氧化物系超导带状导线（7）中，在部分熔融工艺步骤之前执行压缩工艺步骤。 超导带状线（7）的氧化物系超导体（1）的密度提高超过理论密度的90％。 可以制造足够长的实际应用的超导带状线（7），并且可以获得具有5T级的氧化物系超导磁体。 超导带状导线（7）类似于短样品线的性能，具有磁场期间的性能。