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    • 1. 发明授权
    • Measurement device for the measurement of the absolute polarisation of alkali metal atoms
    • 用于测量碱金属原子绝对极化的测量装置
    • US06589793B1
    • 2003-07-08
    • US09590533
    • 2000-06-08
    • Stephan AppeltTimur UnluNadim Jone Shah
    • Stephan AppeltTimur UnluNadim Jone Shah
    • G01N3320
    • G01N21/21Y10T436/24
    • The invention concerns a device for the determination of the absolute polarisation of alkali metal atoms. The device can inter alia be used for the diagnosis of alkali metal polarisation in a polariser for inert gases. The device includes a detection laser, which together with a &lgr;/4 plate creates circularly polarised light. A sensor for the measurement of the light absorbed by the sample of the polariser is provided. A Helmholtz coil pair serves for the creation of a static magnetic field B0. An oscillating magnetic field is created with an RF coil. A gradient coil serves for the creation of a linear magnetic field gradient. Various optical components are present. An electronic processor effects the determination of the absolute polarisation of the alkali metal atoms. All the said components with the exception of the Helmholtz coils are firmly mounted onto a platform which can be moved parallel to the direction of the B0 field. Means for controlling the temperature of the laser for the detection of the polarisation of the alkali metal atoms are provided. The means for controlling the temperature of the laser for the detection of the polarisation of the alkali metal atoms include a temperature sensor, with which the temperature of the laser is measured, a heating/cooling device, with which the laser is heated or cooled, and also a control device, which controls the heating/cooling device depending on the measured temperature of the laser, so that the temperature of the laser is held constant. Compared to the state of the art, faster and better measurement results can thus be achieved.
    • 本发明涉及一种用于确定碱金属原子的绝对极化的装置。 该装置尤其可用于诊断用于惰性气体的偏振器中的碱金属极化。 该装置包括检测激光器,其与羔羊/ 4板一起产生圆偏振光。 提供了用于测量由偏振器的样品吸收的光的传感器。 亥姆霍兹线圈对用于创建静态磁场B0。 用RF线圈产生振荡磁场。 梯度线圈用于产生线性磁场梯度。 存在各种光学部件。 电子处理器可以确定碱金属原子的绝对极化。 除了亥姆霍兹线圈之外的所有组件都被牢固地安装在平台上,平台可以平行于B0场的方向移动。 提供了用于控制用于检测碱金属原子的极化的激光器的温度的装置。 用于控制用于检测碱金属原子的极化的激光的温度的装置包括:测量激光的温度的温度传感器,激光被加热或冷却的加热/冷却装置, 以及控制装置,其根据激光的测量温度控制加热/冷却装置,使得激光器的温度保持恒定。 与现有技术相比,可以实现更快更好的测量结果。
    • 3. 发明授权
    • Hyperpolarization of lithium and other nuclei
    • 锂和其他核的超极化
    • US08248068B2
    • 2012-08-21
    • US11918853
    • 2006-03-25
    • Stephan AppeltWolfgang HäsingUlrich SielingHolger Kühn
    • Stephan AppeltWolfgang HäsingUlrich SielingHolger Kühn
    • G01V3/00
    • G01R33/282
    • The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Li+ ions and accumulated. The nuclear spin polarization of the Li+ ions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Li+ ions. Then, the nuclear spin polarization of the Li+ ions is transmitted to another nucleus of an anion. Thus it is possible to obtain hyperpolarized nuclei such as, for example, 13C, 31P or 29Si in solid or liquid phase, in large amounts and at high polarizing levels.
    • 本发明涉及一种通过在采样单元中光学泵浦第一类型或碱金属原子并通过碱性金属的光泵浦电子与锂原子电子之间的自旋交换来超极化混合物中的锂原子的方法。 锂原子优选被氧化成Li +离子并累积。 Li +离子的核自旋极化可以传递到阴离子的核自旋。 本发明还涉及通常产生具有核自旋极化的物质的方法。 根据所述方法,锂原子在取样室中从第一种碱金属的原子被光泵浦,并通过碱金属的光泵浦电子与锂原子电子之间的自旋交换进行超极化,然后锂原子被氧化 进入Li +离子。 然后,Li +离子的核自旋极化被传递到阴离子的另一个核。 因此,可以在固相或液相中以大量和高极化水平获得超极化核,例如13C,31P或29Si。
    • 4. 发明申请
    • Imaging Method Based on Fractal Surface-Filling or Space-Filling Curves
    • 基于分形表面填充或空间填充曲线的成像方法
    • US20080231268A1
    • 2008-09-25
    • US10586083
    • 2004-12-17
    • Richard PatzakDaniel GembrisStephan AppeltFriedrich-Wolfgang HasingHorst Halling
    • Richard PatzakDaniel GembrisStephan AppeltFriedrich-Wolfgang HasingHorst Halling
    • G01R33/48
    • G01R33/4822G01R33/445G01R33/48G01R33/4806G01R33/5615
    • The present invention relates to an imaging method and device for nuclear magnetic resonance. On the one hand, the method provides an image coding by means of an additional field which has, for each point of a two-dimensional grating surface within the sample, a different field strength value that occurs only once, as is the case, e.g., in fields based on fractal, surface-filling and space-filling curves. On the other hand, the read-out of the resonance behavior of a sample along a space-filling and/or surface-filling curve can be provided. In the first variant, a magnetic resonance (MR) image with a single high-frequency excitation without a time-varying gradient can be recorded, which in turn advantageously prevents the sound generation associated therewith. In the second variant, the sounds generated during read-out are advantageously shifted to another frequency range in which the human hearing is less sensitive. Furthermore, the device is relieved and the technical requirements with regard to it are reduced. In addition, it can be executed with known and existing devices.
    • 本发明涉及用于核磁共振的成像方法和装置。 一方面,该方法通过附加场提供图像编码,对于样本内的二维光栅表面的每个点,其具有仅出现一次的不同场强值,例如, ,在基于分形,表面填充和空间填充曲线的领域。 另一方面,可以提供沿空间填充和/或曲面填充曲线读取样本的共振特性。 在第一变型中,可以记录具有不具有时变梯度的单个高频激励的磁共振(MR)图像,这又有利地防止与之相关联的声音生成。 在第二变型中,在读出期间产生的声音有利地被移动到人听觉不太敏感的另一个频率范围。 此外,该装置得到缓解,并且减少了对其的技术要求。 此外,它可以用已知和现有的设备执行。
    • 5. 发明申请
    • Hyperpolarization of lithium and other nuclei
    • 锂和其他核的超极化
    • US20090261822A1
    • 2009-10-22
    • US11918853
    • 2006-03-25
    • Stephan AppeltWolfgang HaesingUlrich SielingHolger Kuehn
    • Stephan AppeltWolfgang HaesingUlrich SielingHolger Kuehn
    • G01R33/26
    • G01R33/282
    • The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Li+ ions and accumulated. The nuclear spin polarization of the Li+ ions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Li+ ions. Then, the nuclear spin polarization of the Li+ ions is transmitted to another nucleus of an anion. Thus it is possible to obtain hyperpolarized nuclei such as, for example, 13C, 31P or 29Si in solid or liquid phase, in large amounts and at high polarizing levels.
    • 本发明涉及一种通过在采样单元中光学泵浦第一类型或碱金属原子并通过碱性金属的光泵浦电子与锂原子电子之间的自旋交换来超极化混合物中的锂原子的方法。 锂原子优选被氧化成Li +离子并累积。 Li +离子的核自旋极化可以传递到阴离子的核自旋。 本发明还涉及通常产生具有核自旋极化的物质的方法。 根据所述方法,锂原子在取样室中从第一种碱金属的原子被光泵浦,并通过碱金属的光泵浦电子与锂原子电子之间的自旋交换进行超极化,然后锂原子被氧化 进入Li +离子。 然后,Li +离子的核自旋极化被传递到阴离子的另一个核。 因此,可以在固相或液相中以大量和高极化水平获得超极化核,例如13C,31P或29Si。