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    METHOD AND SYSTEM FOR MEASURING INERT GAS BY ION PROBE
    41.
    发明申请
    METHOD AND SYSTEM FOR MEASURING INERT GAS BY ION PROBE 有权

    公开(公告)号：US20210057204A1

    公开(公告)日：2021-02-25

    申请号：US16754629

    申请日：2018-12-04

    Applicant: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES

    Inventor： Yu LIU ,  Guoqiang TANG ,  Qiuli LI

    IPC: H01J49/24 ,  H01J49/14 ,  H01J49/28

    Abstract: A method and system for measuring an inert gas by an ion probe. Embedding a to-be-measured sample into an epoxy resin, to obtain a sample target, where the to-be-measured sample includes an inert gas atom; after putting the obtained sample target into an analysis chamber of the ion probe, vacuumizing the analysis chamber, where the ion probe includes a primary ion source, an electron gun, a mass analyzer, and an ion detector; bombarding the sample target by using a primary ion beam formed by the primary ion source to release the inert gas atom in the sample target; ionizing the released inert gas atom by using an electron beam formed by the electron gun to form an inert gas ion; and analyzing a secondary ion containing the inert gas ion by using the mass analyzer and the ion detector to achieve measurement of the inert gas.

    Package Comprising an Ion-Trap and Method of Fabrication
    43.
    发明申请
    Package Comprising an Ion-Trap and Method of Fabrication 审中-公开

    公开(公告)号：US20200335320A1

    公开(公告)日：2020-10-22

    申请号：US16913932

    申请日：2020-06-26

    Applicant: Duke University

    Inventor： Jungsang KIM ,  Kai HUDEK ,  Geert VRIJSEN ,  Robert SPIVEY ,  Peter MAUNZ

    IPC: H01J49/42 ,  G06N10/00 ,  H01J49/16 ,  H01J49/24

    Abstract: A package-level, integrated high-vacuum ion-chip enclosure having improved thermal characteristics is disclosed. Enclosures in accordance with the present invention include first and second chambers that are located on opposite sides of a chip carrier, where the chambers are fluidically coupled via a conduit through the chip carrier. The ion trap is located in the first chamber and disposed on the chip carrier. A source for generating an atomic flux is located in the second chamber. The separation of the source and ion trap in different chambers affords thermal isolation between them, while the conduit between the chambers enables the ion trap to receive the atomic flux.

    Compact mass spectrometer
    46.
    发明授权
    Compact mass spectrometer 有权

    公开(公告)号：US10755906B2

    公开(公告)日：2020-08-25

    申请号：US16238072

    申请日：2019-01-02

    Applicant: Micromass UK Limited

    Inventor： David Gordon ,  Daniel James Kenny

    IPC: H01J49/00 ,  H01J49/24 ,  H01J49/10 ,  H01J49/40 ,  H01J49/14 ,  H01J49/06

    Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionization source and a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. An ion detector is located in the third vacuum chamber. A first RF ion guide is located within the first vacuum chamber and a second RF ion guide is located within the second vacuum chamber. The ion path length from the atmospheric pressure sampling orifice or capillary to an ion detecting surface of the ion detector is ≤400 mm. The mass spectrometer further comprises a tandem quadrupole mass analyzer, a 3D ion trap mass analyzer, a 2D or linear ion trap mass analyzer, a Time of Flight mass analyzer, a quadrupole-Time of Flight mass analyzer or an electrostatic mass analyzer arranged in the third vacuum chamber. The product of the pressure P1 in the vicinity of the first RF ion guide and the length L1 of the first RF ion guide is in the range 10-100 mbar-cm and the product of the pressure P2 in the vicinity of the second RF ion guide and the length L2 of the second RF ion guide is in the range 0.05-0.3 mbar-cm.

    Mass spectrometer method and apparatus for monitoring for TATP
    48.
    发明授权
    Mass spectrometer method and apparatus for monitoring for TATP 有权

    公开(公告)号：US10725006B2

    公开(公告)日：2020-07-28

    申请号：US15904471

    申请日：2018-02-26

    Applicant: RJ LEE GROUP, INC.

    Inventor： Heinz J. Huber ,  Richard J. Lee

    IPC: H01J49/26 ,  H01J49/14 ,  G01N33/00 ,  H01J49/00 ,  G01N27/62 ,  H01J49/04 ,  H01J49/24

    Abstract: Methods and apparatus for monitoring air samples for the presence of the explosive TATP are disclosed. A preferred approach employs proton transfer reaction mass spectrometry PTR-MS). The system may be operated continuously on a real time or near real time basis. A delivery tube of specific dimensions and materials is employed to introduce the sample into the ionization chamber which in turn generates the ions which are delivered to the mass spectrometer for determining the m/z values. The system may employ a plurality of ionization chambers to reduce the amount of false negative identifiers. A multiple inlet ion funnel may be employed to combine the ions from each of the ionization chambers. Chemical ionization may be employed. A validation module may be employed to reduce the amount of false positive identifiers.

    TURBO MOLECULAR PUMP FOR MASS SPECTROMETER
    49.
    发明申请
    TURBO MOLECULAR PUMP FOR MASS SPECTROMETER 审中-公开

    公开(公告)号：US20200058479A1

    公开(公告)日：2020-02-20

    申请号：US16525165

    申请日：2019-07-29

    Applicant: Bruker Daltonik GmbH

    Inventor： Urs STEINER ,  Jochen FRANZEN

    IPC: H01J49/04 ,  F04D19/04 ,  H01J49/24

    Abstract: The invention relates to turbo molecular pumps enabling high pumping speed. The disclosure suggests using one or more cage-like rotor stages to optimize pumping speed on vacuum systems with low gas flows and low ultimate pressures. This allows for a smaller motor as well as smaller overall form factor and makes it well suited, in particular, for compact mass spectrometers and desk-top mass spectrometers.

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