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公开(公告)号：US20240355608A1
公开(公告)日：2024-10-24
申请号：US18641183
申请日：2024-04-19
CPC分类号： H01J49/24 , G01N30/72 , H01J49/0009 , H01J49/26
摘要： Mass spectrometry systems for performing mass analysis on ion samples include a vacuum region comprising a mass analyser configured to provide a detection signal for the ion sample. A turbomolecular pump is configured to maintain the vacuum region at a vacuum pressure and a controller is configured to control the pressure within the mass analyser to control the rate of decay over time of the detection signal for the ion sample by: controlling a pumping speed of the turbomolecular pump. The turbomolecular pump can be configured to maintain the vacuum region at a first pressure when the mass analyser is being operated in a mass analysis mode of operation and a second pressure when the mass analyser is being operated in a collision cross section analysis mode of operation, wherein the second pressure is greater than the first pressure.
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2.发明公开公开(公告)号：US20240242952A1
公开(公告)日：2024-07-18
申请号：US18514444
申请日：2023-11-20
发明人： Ziheng Liu , Jiannan Li , Fei Su , Huaiyu He
CPC分类号： H01J49/0459 , H01J49/0468 , H01J49/0495 , H01J49/24 , H01J49/4205
摘要： A water-containing simulated lunar soil preparation and water content measurement system and method is provided. The system includes a water-containing simulated lunar soil preparation unit, a low-pressure environment simulation unit, and a water content analysis unit. The water-containing simulated lunar soil preparation unit includes a preparation pipeline, a low-temperature lunar soil cold trap, and a low-temperature water ice cold trap. Both ends of the preparation pipeline are connected with the low-temperature lunar soil cold trap and the low-temperature water ice cold trap through a first opening and closing valve and a second opening and closing valve, respectively. The low-pressure environment simulation unit includes a low-pressure pipeline provided with a vacuum pump. Both ends of the low-pressure pipeline are connected with the preparation pipeline and the water content analysis unit through a first pneumatic valve and a second pneumatic valve, respectively.
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公开(公告)号：US20240234122A9
公开(公告)日：2024-07-11
申请号：US18047801
申请日：2022-10-19
申请人： Thermo Finnigan LLC
发明人： Scott T. Quarmby , Joshua T. Maze
CPC分类号： H01J49/24 , H01J49/421
摘要： A mass spectrometer includes a vacuum chamber, a pump for maintaining a vacuum chamber at an operating vacuum pressure, an ion source, a first mass filter configured to select precursor ions, a collision/reaction cell pressurized with a collision or reaction gas and configured to generate a plurality of product ions from the precursor ions by colliding or reacting the precursor ions with one or more gas particles, and a second mass filter configured to select target ions from the product ions. Also provided are entrance and exit lenses between the collision/reaction cell and the first and second mass filters, respectively, each of which include axially-spaced ion lenses and evacuation chambers between adjacent ion lenses. A plenum fluidly connects the evacuation chambers to the pump inlet to facilitate evacuation of collision or reaction gas escaping the collision/reaction cell to the pump away from the first and second mass filters.
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公开(公告)号：US20240213011A1
公开(公告)日：2024-06-27
申请号：US18508669
申请日：2023-11-14
申请人： SHIMADZU CORPORATION
发明人： Xiaoqiang ZHANG , Zhi Geng , Wenjian Sun
CPC分类号： H01J49/063 , H01J49/24
摘要： The technical solution of the present disclosure provides an ion source apparatus and a mass spectrometer. According to the ion source apparatus, the axial ion guide assembly includes the plurality of multipole segments extending axially, the transmission path of axial ions is straight, and the ion transmission efficiency is substantially unaffected when the axial ion source is used alone. Further, since the ion outlet of the lateral ion guide assembly faces a gap between two adjacent segmented multipoles, the lateral ion guide assembly does not affect axial field, thereby integrating the multiple ion sources while ensuring the ion transmission efficiency and ion constraining of the axial ion source.
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公开(公告)号：US20240177987A1
公开(公告)日：2024-05-30
申请号：US18282841
申请日：2021-11-18
IPC分类号： H01J49/42 , G01N33/02 , G01N33/483 , H01J49/24
CPC分类号： H01J49/4215 , G01N33/02 , G01N33/4833 , H01J49/24
摘要： In one aspect, a method of performing mass spectrometric analysis of a sample, e.g. a food-based sample, is disclosed, which comprises ionizing the sample to generate a plurality of ions, introducing the plurality of ions into a mass filter configured to provide a high m/z cutoff greater than a maximum m/z ratio of ions associated with one or more analytes of interest in the sample so as to allow passage of the analyte ions while inhibiting passage of ions having m/z ratios above said high m/z cutoff, and performing a mass analysis of ions passing through said mass filter. In a related aspect, a mass spectrometer is disclosed, which comprises an atmospheric pressure ion source, a first mass filter, a user interface and a controller.
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公开(公告)号：US20240145225A1
公开(公告)日：2024-05-02
申请号：US18382955
申请日：2023-10-23
申请人： SHIMADZU CORPORATION
发明人： Tomoyoshi MATSUSHITA
CPC分类号： H01J49/0495 , H01J49/105 , H01J49/24
摘要： Provided is a mass spectrometer including a vacuum chamber containing a cell used for causing ions originating from a sample to come in contact with a predetermined gas supplied from a gas supplier (20), which includes a three-way valve (204) configured to selectively send the gas into either a first passage (22) for sending the predetermined gas to the cell or a second passage (23) for discharging the gas into vacuum state. The mass spectrometer also includes a controller configured to control the three-way valve so as to send the gas into the second passage during an analysis period in which ions are not caused to come in contact with the gas within the cell and/or during a non-analyzing period, as well as to send the gas into the first passage during an analysis period in which ions are caused to come in contact with the gas within the cell.
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公开(公告)号：US20240136171A1
公开(公告)日：2024-04-25
申请号：US18047801
申请日：2022-10-18
申请人： Thermo Finnigan LLC
发明人： Scott T. Quarmby , Joshua T. Maze
CPC分类号： H01J49/24 , H01J49/421
摘要： A mass spectrometer includes a vacuum chamber, a pump for maintaining a vacuum chamber at an operating vacuum pressure, an ion source, a first mass filter configured to select precursor ions, a collision/reaction cell pressurized with a collision or reaction gas and configured to generate a plurality of product ions from the precursor ions by colliding or reacting the precursor ions with one or more gas particles, and a second mass filter configured to select target ions from the product ions. Also provided are entrance and exit lenses between the collision/reaction cell and the first and second mass filters, respectively, each of which include axially-spaced ion lenses and evacuation chambers between adjacent ion lenses. A plenum fluidly connects the evacuation chambers to the pump inlet to facilitate evacuation of collision or reaction gas escaping the collision/reaction cell to the pump away from the first and second mass filters.
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公开(公告)号：US20240087870A1
公开(公告)日：2024-03-14
申请号：US18273914
申请日：2022-01-21
IPC分类号： H01J49/24
CPC分类号： H01J49/24
摘要： In one aspect, an ion guide for use in a mass spectrometry system is disclosed, which comprises an inlet for receiving a plurality of ions entrained in a gas flow, and a plurality of rods arranged in a multipole configuration so as to provide a passageway through which the received ions can traverse. At least one of the rods is configured for application of a DC and/or an RF voltage thereto for generating an electromagnetic field within the passageway suitable for focusing the ions, and a controller configured to maintain an operational pressure of the ion guide within a predefined range.
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公开(公告)号：US11873219B2
公开(公告)日：2024-01-16
申请号：US17045961
申请日：2019-04-04
申请人： SHELL OIL COMPANY
IPC分类号： C01B3/30 , C01B32/162 , B01J23/755 , C01B3/56 , H01J49/06 , H01J49/10 , H01J49/24
CPC分类号： C01B3/30 , B01J23/755 , C01B3/56 , C01B32/162 , H01J49/067 , H01J49/105 , H01J49/24 , C01B2203/0277
摘要： A method of operating a mass spectrometer vacuum interface, the vacuum interface comprising an evacuated expansion chamber downstream of a plasma ion source at atmospheric or relatively high pressure, the expansion chamber having a first aperture that interfaces with the plasma ion source to form an expanding plasma downstream of the first aperture and a second aperture downstream of the first aperture from the plasma for skimming the expanding plasma to form a skimmed expanding plasma; wherein the expansion chamber is pumped by an interface vacuum pump to provide an interface pressure in the chamber; the method comprising using a controller to automatically, or according to user input, control the throughput of the interface vacuum pump to control the interface pressure dependent on one or more operating modes of the spectrometer. A pressure gauge can be located in the expansion chamber and a feedback loop provided between the pressure gauge and controller.
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公开(公告)号：US11837455B2
公开(公告)日：2023-12-05
申请号：US17831951
申请日：2022-06-03
发明人： Robert Graham Cooks , Zane Baird , Pu Wei
IPC分类号： H01J49/00 , H01J49/24 , H01J49/06 , G01N27/623 , G01N27/622 , H01J49/14
CPC分类号： H01J49/24 , G01N27/622 , G01N27/623 , H01J49/0013 , H01J49/061 , H01J49/142
摘要： The invention generally relates to sample analysis systems and methods of use thereof. In certain aspects, the invention provides a system for analyzing a sample that includes an ion generator configured to generate ions from a sample. The system additionally includes an ion separator configured to separate at or above atmospheric pressure the ions received from the ion generator without use of laminar flowing gas, and a detector that receives and detects the separated ions.
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