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1. 发明授权

US09892902B2 Ion radiation device and surface analyzer using said device 有权
公开(公告)号：US09892902B2
公开(公告)日：2018-02-13
申请号：US15334559
申请日：2016-10-26
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi , Hideaki Izumi
IPC分类号： H01J49/40 , H01J49/06 , H01J49/10
CPC分类号： H01J49/401 , H01J49/062 , H01J49/10 , H01J49/405
摘要： Used as an ion beam guiding unit for introducing primary ions to the surface of the sample is an ion optical system of reflectron TOFMS for achieving time focusing including an orthogonal acceleration unit for accelerating the ions in the orthogonal direction, a flight space of a non-electric field, and an ion reflector for forming a reflecting electric field. A dual stage type is used as the ion reflector to superimpose the correction potential showing a predetermined non-linear potential distribution on the potential having a linear gradient of a uniform electric field at the side deeper than the second order focusing position that fulfills the Mamyrin solution, thereby correcting the temporal spread of ion packets emitted from the orthogonal acceleration unit until the deviation of third or higher order in energy, achieving high time focusing.

2. 发明授权

US10186413B2 Time-of-flight mass spectrometer 有权
公开(公告)号：US10186413B2
公开(公告)日：2019-01-22
申请号：US15539229
申请日：2014-12-24
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi
IPC分类号： H01J49/40 , H01J49/42 , H01J37/26
摘要： An ion reflector has a configuration in which multiple plate electrodes having a rectangular opening are arranged. The components are arranged so that a central axial line extending in the longitudinal direction of the opening lies on a plane which contains a straight line (Y-axis) connecting the centroidal position of an ion distribution in an ion trap and a central position on the detection surface of a detector, and a central axial line (X-axis) of an ion-ejecting direction. If the potential distribution along the central axis of the ion reflector is modified so that a portion of the reflecting field becomes a non-uniform electric field intended for improving isochronism for a group of ions to be detected, an area having an ideal potential distribution for realizing the isochronism is spread in the Y-axis direction.

3. 发明申请

US20150270115A1 TIME-OF-FLIGHT MASS SPECTROMETER 有权
标题翻译：飞行时间质谱仪
公开(公告)号：US20150270115A1
公开(公告)日：2015-09-24
申请号：US14434596
申请日：2013-09-18
申请人： Shimadzu Corporation
发明人： Osamu Furuhashi
IPC分类号： H01J49/40
CPC分类号： H01J49/405
摘要： In an ion reflector (4) configured from a plurality of electrodes, electrodes 42 disposed in a second stage region (S2) for reflecting ions after deceleration are formed thinner than electrodes (41) disposed in a first stage region (S1) for decelerating the ions.The thin electrodes suppress unevenness of potential, in particular, in a path away from the center axis of the reflector, which results in improvement of isochronism of an ion packet passing on the path. The thick electrodes (41, 43) disposed in the first stage region (S1) prevents stretching of the grid electrodes (G1, G2) from being affected, and unevenness of potential in the first stage region (S1) hardly affects isochronism of the ions. By appropriately adjusting thicknesses and a pitch of the electrodes (41, 42, 43, 44) adjacent to one another so as to align intervals between the electrodes (41, 42, 43, 44), it is possible to use spacers having the same size in common. Since the number of electrodes in the first stage region (S1) can be reduced, an increase in costs is suppressed. Consequently, it is possible to bring an electric field of an ion reflection region closer to an ideal state and improve mass-resolving power while suppressing costs.
摘要翻译：在由多个电极构成的离子反射体（4）中，比设置在第一阶段区域（S1）中的电极（41）更薄地设置在第二阶段区域（S2）中用于反射减速后的离子的电极42，离子。薄电极抑制电位的不均匀性，特别是在远离反射器的中心轴的路径中，这导致通过路径的离子包的等时性的改善。设置在第一级区域（S1）中的厚电极（41,43）防止栅电极（G1，G2）的拉伸受到影响，第一级区域（S1）的电位不均匀性几乎不影响离子的等时性。通过适当地调整彼此相邻的电极（41,42,43,44）的厚度和间距以便对准电极（41,42,43,44）之间的间隔，可以使用具有相同的间隔物大小相同由于可以减少第一级区域（S1）中的电极的数量，因此抑制了成本的增加。因此，可以使离子反射区域的电场更接近理想状态，并且能够在抑制成本的同时提高质量分辨能力。

4. 发明授权

US10930488B2 Mass spectrometer, sampling probe, and analysis method 有权
公开(公告)号：US10930488B2
公开(公告)日：2021-02-23
申请号：US16814036
申请日：2020-03-10
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi , Tomomi Tamura , Kiyoshi Ogawa
IPC分类号： H01J49/00 , H01J49/08 , H01J49/04
摘要： A mass spectrometer, includes: a sampling probe that irradiates a specimen disposed in the atmosphere with an electron and obtains a sample separated from the specimen; and a measurement unit that performs mass spectrometry of the sample obtained by the sampling probe, wherein the sampling probe comprises: a casing having an opening which is opened to the atmosphere and an outlet through which the sample is discharged to the measurement unit; and a surface emission type electron emission element housed in the casing such that an electron emission surface thereof opposes to the opening.

5. 发明授权

US10923339B2 Orthogonal acceleration time-of-flight mass spectrometry 有权
公开(公告)号：US10923339B2
公开(公告)日：2021-02-16
申请号：US16744290
申请日：2020-01-16
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi , Daisuke Okumura , Tomoyuki Oshiro
IPC分类号： H01J49/40 , G01N27/62 , H01J49/06 , H01J49/24 , H01J49/10
摘要： A multipole ion guide (30) including a plurality of rod electrodes arranged at an angle to the central axis (C) is placed within a collision cell (13) located in the previous stage of an orthogonal accelerator (16). Radio-frequency voltages with opposite phases are applied to the rod electrodes of the ion guide (30) so that any two rod electrodes neighboring each other in the circumferential direction have opposite phases of the voltage. A depth gradient of the pseudopotential is thereby formed from the entrance end toward the exit end within the space surrounded by the rod electrodes, and ions are accelerated by this gradient. During an ion-accumulating process, a direct voltage having the same polarity as the ions is applied to the exit lens electrode (132) to form a potential barrier for accumulating ions. Among the ions repelled by the potential barrier, ions having smaller m/z return closer to the entrance end. Therefore, when the potential barrier is removed and ions are discharged, ions having smaller m/z are discharged at later points in time than those having larger m/z. Therefore, a wide m/z range of ions can be simultaneously accelerated and ejected by an orthogonal accelerator (16).

6. 发明授权

US10573504B2 Orthogonal acceleration time-of-flight mass spectrometry 有权
公开(公告)号：US10573504B2
公开(公告)日：2020-02-25
申请号：US16070088
申请日：2016-01-15
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi , Daisuke Okumura , Tomoyuki Oshiro
IPC分类号： H01J49/40 , H01J49/06 , H01J49/10 , H01J49/24 , G01N27/62
摘要： A multipole ion guide (30) including a plurality of rod electrodes arranged at an angle to the central axis (C) is placed within a collision cell (13) located in the previous stage of an orthogonal accelerator (16). Radio-frequency voltages with opposite phases are applied to the rod electrodes of the ion guide (30) so that any two rod electrodes neighboring each other in the circumferential direction have opposite phases of the voltage. A depth gradient of the pseudopotential is thereby formed from the entrance end toward the exit end within the space surrounded by the rod electrodes, and ions are accelerated by this gradient. During an ion-accumulating process, a direct voltage having the same polarity as the ions is applied to the exit lens electrode (132) to form a potential barrier for accumulating ions. Among the ions repelled by the potential barrier, ions having smaller m/z return closer to the entrance end. Therefore, when the potential barrier is removed and ions are discharged, ions having smaller m/z are discharged at later points in time than those having larger m/z. Therefore, a wide m/z range of ions can be simultaneously accelerated and ejected by an orthogonal accelerator (16).

7. 发明授权

US10529549B2 Method for analyzing optical isomers using circularly polarized light and ion mobility analyzer 有权
公开(公告)号：US10529549B2
公开(公告)日：2020-01-07
申请号：US16108182
申请日：2018-08-22
申请人： SHIMADZU CORPORATION
发明人： Yoshinori Arita , Osamu Furuhashi
IPC分类号： H01J49/06 , G01N27/62 , G01N21/19
摘要： The existence ratio of optical isomers (D-form, L-form) is easily measured.Counterclockwise or clockwise circularly polarized light is applied from a light application unit 6 to ions which are derived from a target compound and are drifting in a drift region 3. The ions absorb light, and a collision cross-section of the ions thus changes, whereby the mobility also changes. Each of the D-form and the L-form has a light absorption rate which is different between counterclockwise circularly polarized light and clockwise circularly polarized light. Therefore, each light absorption rate is examined in advance, and an existence ratio of the D-form and the L-form is calculated, based on the two intensity ratios each of which is the ratio of a peak of the ions having absorbed no light and a peak of the ions having absorbed light, which peaks appear on a drift time spectrum, and based on the light absorption rates of the D-form and the L-form.

8. 发明授权

US09490114B2 Time-of-flight mass spectrometer 有权
标题翻译：飞行时间质谱仪
公开(公告)号：US09490114B2
公开(公告)日：2016-11-08
申请号：US14434596
申请日：2013-09-18
申请人： SHIMADZU CORPORATION
发明人： Osamu Furuhashi
IPC分类号： H01J49/40
CPC分类号： H01J49/405
摘要： In an ion reflector (4) configured from a plurality of electrodes, electrodes 42 disposed in a second stage region (S2) for reflecting ions after deceleration are formed thinner than electrodes (41) disposed in a first stage region (S1) for decelerating the ions. The thin electrodes suppress unevenness of potential, in particular, in a path away from the center axis of the reflector, which results in improvement of isochronism of an ion packet passing on the path. The thick electrodes (41, 43) disposed in the first stage region (S1) prevents stretching of the grid electrodes (G1, G2) from being affected, and unevenness of potential in the first stage region (S1) hardly affects isochronism of the ions. By appropriately adjusting thicknesses and a pitch of the electrodes (41, 42, 43, 44) adjacent to one another so as to align intervals between the electrodes (41, 42, 43, 44), it is possible to use spacers having the same size in common. Since the number of electrodes in the first stage region (S1) can be reduced, an increase in costs is suppressed. Consequently, it is possible to bring an electric field of an ion reflection region closer to an ideal state and improve mass-resolving power while suppressing costs.
摘要翻译：在由多个电极构成的离子反射体（4）中，比设置在第一阶段区域（S1）中的电极（41）更薄地设置在第二阶段区域（S2）中用于反射减速后的离子的电极42，离子。薄电极抑制电位的不均匀性，特别是在远离反射器的中心轴的路径中，这导致通过路径的离子包的等时性的改善。设置在第一级区域（S1）中的厚电极（41,43）防止栅电极（G1，G2）的拉伸受到影响，第一级区域（S1）的电位不均匀性几乎不影响离子的等时性。通过适当地调整彼此相邻的电极（41,42,43,44）的厚度和间距以便对准电极（41,42,43,44）之间的间隔，可以使用具有相同的间隔物大小相同由于可以减少第一级区域（S1）中的电极的数量，因此抑制了成本的增加。因此，可以使离子反射区域的电场更接近理想状态，并且能够在抑制成本的同时提高质量分辨能力。

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