利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

299 条记录 (耗时 0.019 秒)

    MASS SEPARATOR
    2.
    发明申请
    MASS SEPARATOR 审中-公开

    公开(公告)号：US20200312651A1

    公开(公告)日：2020-10-01

    申请号：US16815048

    申请日：2020-03-11

    申请人： Nissin Ion Equipment Co., Ltd.

    发明人： Daiki Takashima ,  Ippei Nishimura

    IPC分类号： H01J49/30 ,  H01J49/02

    摘要： Provided is a mass separator (100) for performing mass separation for an ion beam (IB). The mass separator (100) includes a transfer structure (30) that is a component of a yoke (13) and move at least one of an upper yoke (13a) positioned over the beam path (L), a lower yoke (13b) positioned under the beam path (L), and a side yoke (13c, 13d) positioned at a side of the beam path (L) between a normal position (P) in the traveling of the ion beam (IB) and a retracted position (Q) that does not overlap with at least a part of the normal position (P); the yoke (13) is surrounding the beam path (L) and is made of a magnetic body.

    Accelerator mass spectrometry system and associated method
    3.
    发明授权
    Accelerator mass spectrometry system and associated method 有权

    公开(公告)号：US10748753B2

    公开(公告)日：2020-08-18

    申请号：US16439817

    申请日：2019-06-13

    申请人： High Voltage Engineering Europa B.V.

    发明人： Dirk Jozef Willem Mous

    IPC分类号： H01J49/00 ,  H01J49/30

    摘要： An accelerator mass spectrometry system for measuring an isotopic ratio of a chemical element in a sample. The system includes an ion source generating a beam of negative ions of the chemical element containing ions of first and second isotopes of the chemical element, a first analyzer section, comprising a first mass analyzer; a tandem accelerator comprising a first accelerating section, a charge stripping section for converting the negative ions into positive ions, and a second accelerating section behind the charge stripping section. A second analyzer section includes a second mass analyzer and an electrostatic analyzer; a particle detector; and a controller system configured to control the first mass analyzer section and the second analyzer section such that the ions of the first and second isotopes traverse the tandem accelerator and ions of only one of the first and second isotopes enter the particle detector. An additional analyzer is located in between the charge stripping section and the second accelerating section and is configured to receive positive ions that have exited the charge stripping section and to separate positive ions having a charge state corresponding to a predetermined charge-state value from positive ions having a charge state not corresponding to the predetermined charge-state value, so as to transmit ions with different charge states in mutually different directions such that only ions having a charge state corresponding to the predetermined charge-state value are transmitted towards the particle detector.

    Methods, apparatus, and system for mass spectrometry
    4.
    发明授权
    Methods, apparatus, and system for mass spectrometry 有权

    公开(公告)号：US10658169B2

    公开(公告)日：2020-05-19

    申请号：US16351700

    申请日：2019-03-13

    申请人： Massachusetts Institute of Technology

    发明人： Ian W. Hunter ,  Brian D. Hemond ,  Harold F. Hemond

    IPC分类号： H01J49/30 ,  H01J49/02 ,  H01J49/00 ,  H01J49/14 ,  H01J49/24

    摘要： A miniature, low cost mass spectrometer capable of unit resolution over a mass range of 10 to 50 AMU. The mass spectrometer incorporates several features that enhance the performance of the design over comparable instruments. An efficient ion source enables relatively low power consumption without sacrificing measurement resolution. Variable geometry mechanical filters allow for variable resolution. An onboard ion pump removes the need for an external pumping source. A magnet and magnetic yoke produce magnetic field regions with different flux densities to run the ion pump and a magnetic sector mass analyzer. An onboard digital controller and power conversion circuit inside the vacuum chamber allows a large degree of flexibility over the operation of the mass spectrometer while eliminating the need for high-voltage electrical feedthroughs. The miniature mass spectrometer senses fractions of a percentage of inlet gas and returns mass spectra data to a computer.

    Control of magnetic sector mass spectrometer magnet
    5.
    发明授权
    Control of magnetic sector mass spectrometer magnet 有权

    公开(公告)号：US10176978B2

    公开(公告)日：2019-01-08

    申请号：US15532935

    申请日：2015-12-03

    申请人： Thermo Fisher Scientific (Bremen) GmbH

    发明人： Jürgen Jaeschke ,  Michael Deerberg ,  Hans-Jürgen Schlüter

    IPC分类号： H01J49/26 ,  G21K5/04 ,  H01J49/30 ,  H01J49/00 ,  G01R33/07 ,  G01R33/09

    摘要： A control system for controlling a magnet of a magnetic sector mass spectrometer comprises a magnetic field sensor for sensing the magnetic field of the magnet and generating an output representative thereof; a set point generator configured to generate an output representative of, or related to, a desired magnetic field of the magnet; and a digital controller configured to receive a variable digital input signal from the output of the magnetic field sensor and a set point digital input signal from the output of the set point generator, and to generate a digital output from which is derived a control signal for controlling a current to the magnet so as to control the magnetic field thereof. The control system is arranged to apply to the digital controller a selected one of a plurality of different controller settings, in accordance with the desired magnetic field of the magnet.

    ACCELERATOR MASS SPECTROMETRY DEVICE FOR SIMULTANEOUSLY MEASURING ISOTOPES
    6.
    发明申请
    ACCELERATOR MASS SPECTROMETRY DEVICE FOR SIMULTANEOUSLY MEASURING ISOTOPES 审中-公开

    公开(公告)号：US20180082828A1

    公开(公告)日：2018-03-22

    申请号：US15562892

    申请日：2015-04-01

    申请人： CHINA INSTITUTE OF ATOMIC ENERGY

    发明人： Shan JIANG ,  Yiwen BAO ,  Ming HE ,  Shengyong SU ,  Qubo YOU ,  Yueming HU ,  Daqing CUI

    IPC分类号： H01J49/00 ,  H01J49/48 ,  H01J49/30 ,  H01J49/10

    CPC分类号： H01J49/0086 ,  H01J49/004 ,  H01J49/10 ,  H01J49/30 ,  H01J49/48

    摘要： The present invention provides an accelerator mass spectrometry device for simultaneously measuring isotopes. In one embodiment, the device comprises a sputtering negative ion source for generating negative ions; the sputtering negative ion source being connected to an accelerating tube for simultaneously accelerating a plurality of isotopic ions; an output end of the accelerating tube being connected to an isotope mass resolution system; the isotope mass resolution system being connected to a charge conversion analysis and multi-receiving measurement system; the charge conversion analysis and multi-receiving measurement system being connected to an ion detection system. The present invention is capable of accelerating a plurality of isotopic negative ions simultaneously. The accelerated isotopic negative ions are separated. Stable isotopic negative ions are measured by a stable isotope receiver. Unstable isotope negative ions are converted to positive ions and then measured by a detector.

    METHODS, APPARATUS, AND SYSTEM FOR MASS SPECTROMETRY
    7.
    发明申请
    METHODS, APPARATUS, AND SYSTEM FOR MASS SPECTROMETRY 有权
    方法，装置和大容量光谱系统

    公开(公告)号：US20160172180A1

    公开(公告)日：2016-06-16

    申请号：US15045883

    申请日：2016-02-17

    申请人： The Massachusetts Institute of Technology

    发明人： Ian W. Hunter ,  Brian Hemond ,  Harold F. Hemond

    IPC分类号： H01J49/30 ,  H01J49/02 ,  H01J49/24 ,  H01J49/00 ,  H01J49/14

    CPC分类号： H01J49/30 ,  H01J49/0013 ,  H01J49/0031 ,  H01J49/022 ,  H01J49/147 ,  H01J49/24

    摘要： A miniature, low cost mass spectrometer capable of unit resolution over a mass range of 10 to 50 AMU. The mass spectrometer incorporates several features that enhance the performance of the design over comparable instruments. An efficient ion source enables relatively low power consumption without sacrificing measurement resolution. Variable geometry mechanical filters allow for variable resolution. An onboard ion pump removes the need for an external pumping source. A magnet and magnetic yoke produce magnetic field regions with different flux densities to run the ion pump and a magnetic sector mass analyzer. An onboard digital controller and power conversion circuit inside the vacuum chamber allows a large degree of flexibility over the operation of the mass spectrometer while eliminating the need for high-voltage electrical feedthroughs. The miniature mass spectrometer senses fractions of a percentage of inlet gas and returns mass spectra data to a computer.

    摘要翻译： 一种小型，低成本的质谱仪，能够在10至50 AMU的质量范围内进行单位分辨率。 质谱仪结合了几个功能，可以提高设计的性能，而不是可比较的仪器。 高效的离子源能够在不牺牲测量分辨率的情况下实现相对较低的功耗。 可变几何机械滤镜允许可变分辨率。 机载离子泵不需要外部泵浦源。 磁轭和磁轭产生具有不同磁通密度的磁场区域以运行离子泵和磁性扇区质量分析器。 真空室内的数字控制器和电源转换电路允许在质谱仪的操作上具有很大的灵活性，同时不需要高压电气馈通。 微型质谱仪感测入口气体百分比的分数，并将质谱数据返回到计算机。

    MOLECULE MASS DETECTION VIA FIELD EMISSION OF ELECTRONS FROM MEMBRANES
    9.
    发明申请
    MOLECULE MASS DETECTION VIA FIELD EMISSION OF ELECTRONS FROM MEMBRANES 有权
    通过膜的电子发射的分子质量检测

    公开(公告)号：US20100320372A1

    公开(公告)日：2010-12-23

    申请号：US12489037

    申请日：2009-06-22

    申请人： Robert H. BLICK

    发明人： Robert H. BLICK

    IPC分类号： H01J49/26 ,  H01J49/40 ,  H01J49/42 ,  H01J49/30

    CPC分类号： G01N23/00 ,  H01J47/001 ,  H01J49/025

    摘要： An active detector and methods for detecting molecules, including large molecules such as proteins and oligonucleotides, at or near room temperature based on the generation of electrons via field emission (FE) and/or secondary electron emission (SEE). The detector comprises a semiconductor membrane having an external surface that is contacted by one or more molecules, and an internal surface having a thin metallic layer or other type of electron emitting layer. The kinetic energy of molecules contacting the semiconductor membrane is transferred through the membrane and induces the emission of electrons from the emitting layer. An electron detector, which optionally includes means for electron amplification, is positioned to detect the emitted electrons.

    摘要翻译： 基于通过场发射（FE）和/或二次电子发射（SEE）产生电子，在室温或室温下检测分子（包括大分子如蛋白质和寡核苷酸）的主动检测器和方法。 检测器包括具有与一个或多个分子接触的外表面的半导体膜和具有薄金属层或其它类型的电子发射层的内表面。 接触半导体膜的分子的动能通过膜转移并诱导从发射层发射电子。 可选地包括用于电子放大的装置的电子检测器被定位成检测发射的电子。