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公开(公告)号：US20230042588A1
公开(公告)日：2023-02-09
申请号：US17792786
申请日：2020-04-07
发明人： Yasuhide NAITO , Tsuyoshi HIRAO , Minoru KONDO
摘要： An imaging unit includes a MCP, a fluorescent body, and an imager. The MCP is provided on a flight route of an ionized sample that is a component of a sample ionized and emits electrons in accordance with the ionized sample. The fluorescent body is disposed in a subsequent stage of the MCP and emits fluorescent light in accordance with the electrons emitted from the MCP. The imager is disposed in a subsequent stage of the fluorescent body and has a shutter mechanism configured to be capable of switching an open state in which the fluorescent light is imaged by allowing the fluorescent light from the fluorescent body to pass through and a close state in which the fluorescent light is not imaged by blocking the fluorescent light from the fluorescent body. An afterglow time of the fluorescent body is 12 ns or shorter.
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公开(公告)号：US20240234119A9
公开(公告)日：2024-07-11
申请号：US18277643
申请日：2021-12-06
发明人： Tsuyoshi HIRAO , Yasuhide NAITO , Norimasa KOSUGI
CPC分类号： H01J49/0463 , H01J49/0004 , H01J49/0031
摘要： The mass spectrometer includes a sample stage, an irradiation unit that irradiates the sample with an energy beam and ionizes a component of the sample, an extraction electrode that extracts the ionized sample from the surface of the sample by a potential difference from the sample stage, an MCP that emits electrons in accordance with the ionized sample, an imaging part that acquires an image based on the electrons emitted by the MCP, and a control unit that controls operations of the irradiation unit, the extraction electrode, and the imaging part. The control unit changes the potential of the extraction electrode at a timing in accordance with the detection target component after the irradiation of the energy beam by the irradiation unit, and causes the imaging part to acquire an image as an analysis target in a period in accordance with the detection target component.
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公开(公告)号：US20240136170A1
公开(公告)日：2024-04-25
申请号：US18277643
申请日：2021-12-06
发明人： Tsuyoshi HIRAO , Yasuhide NAITO , Norimasa KOSUGI
CPC分类号： H01J49/0463 , H01J49/0004 , H01J49/0031
摘要： The mass spectrometer includes a sample stage, an irradiation unit that irradiates the sample with an energy beam and ionizes a component of the sample, an extraction electrode that extracts the ionized sample from the surface of the sample by a potential difference from the sample stage, an MCP that emits electrons in accordance with the ionized sample, an imaging part that acquires an image based on the electrons emitted by the MCP, and a control unit that controls operations of the irradiation unit, the extraction electrode, and the imaging part. The control unit changes the potential of the extraction electrode at a timing in accordance with the detection target component after the irradiation of the energy beam by the irradiation unit, and causes the imaging part to acquire an image as an analysis target in a period in accordance with the detection target component.
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公开(公告)号：US20230042476A1
公开(公告)日：2023-02-09
申请号：US17792770
申请日：2020-04-07
发明人： Yasuhide NAITO , Tsuyoshi HIRAO , Minoru KONDO
IPC分类号： G01N27/623 , G01N27/64 , H01J49/16 , H01J49/40
摘要： A mass spectrometry device includes a sample stage, an irradiator, a MCP, a fluorescent body, an imager, and a controller. The irradiator irradiates a sample with an energy beam to ionize a plurality of components of the sample while maintaining position information of the plurality of components. The MCP emits electrons in accordance with an ionized sample. The fluorescent body emits fluorescent light in accordance with the electrons. The imager has a shutter mechanism configured to be capable of switching an open state and a close state. The controller controls an opening and closing operation of the shutter mechanism. The controller allows the imager to image the fluorescent light corresponding to each of the plurality of components by performing the opening and closing of the shutter mechanism at a timing for each of the components.
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