公开(公告)号：US20240110882A1

公开(公告)日：2024-04-04

申请号：US18274580

申请日：2022-01-19

Applicant: Scienta Omicron AB

Inventor： Mikael OLOFSSON ,  Patrik KARLSSON

IPC: G01N23/2273 ,  H01J49/06

CPC classification number: G01N23/2273 ,  H01J49/06

Abstract: Described is an angle-resolving photoelectron spectrometer comprising an electrostatic lens system having a first end and a second end, and arranged to form a beam of electrons emitted from a measurement area on a sample surface, and to transport the electrons to the second end, wherein the first lens element is configured to be arranged at a positive voltage in relation to the sample. The spectrometer comprises at least a first shielding electrode with a limiting aperture, arranged such that the angle between the optical axis and any point on the limiting aperture is larger than 45° and smaller than 70, and at least one compensation electrode which is arranged around the optical axis at a larger distance from the measurement area than the first lens element. The compensation electrode is configured to be arranged at a negative voltage in relation to the sample.

公开(公告)号：US20190066992A1

公开(公告)日：2019-02-28

申请号：US16108182

申请日：2018-08-22

Applicant: SHIMADZU CORPORATION

Inventor： Yoshinori ARITA ,  Osamu FURUHASHI

IPC: H01J49/06 ,  G01N27/62

CPC classification number: H01J49/06 ,  G01N21/19 ,  G01N27/622

Abstract: 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.

公开(公告)号：US20180246061A1

公开(公告)日：2018-08-30

申请号：US15756137

申请日：2016-05-23

Applicant: SHIMADZU CORPORATION

Inventor： Akiko IMAZU ,  Hideaki IZUMI

IPC: G01N27/62 ,  H01J49/06 ,  H01J49/00

CPC classification number: G01N27/622 ,  G01N27/62 ,  H01J49/0031 ,  H01J49/06 ,  H01J49/061

Abstract: A gate electrode (10A) used as a shutter gate includes a pair of conductive fixture members (131, 132) made of metal and identical in size attached to the inside of a rectangular opening (12) of a ceramic base (11), along with insulating fixture members (141, 142) made of ceramic attached to the inner sides of the conductive fixture members. Two comb electrodes (151, 152) as one pair have connecting portions (151a, 152a) adhered to the conductive fixture members (131, 132) as well as thin-wire electrodes whose distal ends are adhered to the insulating fixture members (141, 142). By setting length L of the opening (12) and width D of the conductive fixture members (131, 132) to appropriate values according to the coefficient of thermal expansion of each of those members, the elongation of the electrodes which accompanies an increase in temperature can be balanced by the increase in the distance between the adhered positions of the electrodes to prevent the electrodes from being excessively taut or slack. Therefore, the drift region can be heated to a higher temperature than conventional levels to perform a high-accuracy, high-resolution analysis free from the influence of residual water vapor or similar particles.

公开(公告)号：US20180233345A1

公开(公告)日：2018-08-16

申请号：US15953810

申请日：2018-04-16

Applicant: MICROMASS UK LIMITED

Inventor： Steven Derek Pringle ,  Michael Raymond Morris ,  Stephen Smith ,  Michael McCullagh

IPC: H01J49/16 ,  H01J49/04 ,  H01J49/00

CPC classification number: H01J49/16 ,  A61B17/3203 ,  A61B18/14 ,  A61B2017/32007 ,  A61B2018/00994 ,  A61B2018/1412 ,  A61B2018/1807 ,  A61B2218/008 ,  H01J49/0022 ,  H01J49/0031 ,  H01J49/04 ,  H01J49/0459 ,  H01J49/049 ,  H01J49/06 ,  H01J49/10

Abstract: A method of detecting one or more compounds, chemicals or contaminants in a substrate by mass spectrometry is disclosed. A non-living substrate is analysed by contacting the substrate with a diathermy knife. An electric current is applied to the diathermy knife such that the diathermy knife vaporises a portion of the substrate. The vapour is aspirated via a sampling tube pumped by a venturi pump into a vacuum chamber of a mass spectrometer. Analyte molecules are aspirated into the vacuum chamber whereupon they impact a surface of the vacuum chamber and are ionised to form analyte ions which are then mass analysed.

公开(公告)号：US09927400B2

公开(公告)日：2018-03-27

申请号：US15350155

申请日：2016-11-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahiko Tsukuda ,  Tomohiro Ota ,  Takeshi Yamamoto ,  Norihito Tsukahara

IPC: H01J49/26 ,  G01N27/62 ,  H01J49/06 ,  H01J49/04 ,  H01J49/00

CPC classification number: G01N27/622 ,  G01N27/624 ,  H01J49/0031 ,  H01J49/0422 ,  H01J49/06

Abstract: The present invention provides a field asymmetric ion mobility spectrometer for selectively separating at least one kind of material from a mixture containing two or more kinds of materials. A filter included in the spectrometry comprises first—four plate-like electrodes each having a principal plane parallel to a direction from an ionizer toward a filter. The second plate-like electrode is located between the first plate-like electrode and the third plate-like electrode. The third plate-like electrode is located between the second plate-like electrode and the fourth plate-like electrode. The third and fourth plate-like electrodes are electrically connected to the first and second plate-like electrodes, respectively. An interspace is formed between two adjacent plate-like electrodes. The present invention provides a field asymmetric ion mobility spectrometer having high separation ability.

公开(公告)号：US20170350860A1

公开(公告)日：2017-12-07

申请号：US15172237

申请日：2016-06-03

Applicant: Bruker Daltonik GmbH

Inventor： Oliver RÄTHER ,  Thomas BETZ ,  Melvin Andrew PARK

IPC: G01N27/62 ,  H01J49/00 ,  H01J49/42

CPC classification number: G01N27/622 ,  H01J49/0031 ,  H01J49/06 ,  H01J49/4215 ,  H01J49/4225 ,  H01J49/426

Abstract: The invention is related to a trapped ion mobility spectrometer (TIMS device) and proposes to use higher order (order N>2) linear multipole RF systems to accumulate and analyze ions at an electric DC field barrier, either pure higher order RF multipole systems or multipole RF systems with transitions from higher order towards lower order, e.g. from a linear octopolar RF system (N=4) to a linear quadrupole RF system (N=2) in front of the apex of the electric DC field barrier.

公开(公告)号：US20170338088A1

公开(公告)日：2017-11-23

申请号：US15670502

申请日：2017-08-07

Applicant: LECO Corporation

Inventor： Anatoly N. Verenchikov

IPC: H01J49/00 ,  H01J49/06 ,  H01J49/42 ,  H01J49/02 ,  H01J49/40

CPC classification number: H01J49/0031 ,  H01J49/027 ,  H01J49/06 ,  H01J49/406 ,  H01J49/4205 ,  H01J49/4245 ,  H01J49/4255

Abstract: A method of mass spectral analysis in an analytical electrostatic trap (14) is disclosed. The electrostatic trap (14) defines an electrostatic field volume and includes trap electrodes having static and non-ramped potentials. The method comprises injecting a continuous ion beam into the electrostatic field volume.

公开(公告)号：US20170336356A1

公开(公告)日：2017-11-23

申请号：US15520867

申请日：2015-10-21

Applicant: DH Technologies Development PTE Ltd.

Inventor： Thomas R Covey ,  Yang Kang ,  Frank Londry ,  Bradley B Schneider

IPC: G01N27/62 ,  H01J49/00 ,  H01J49/06 ,  H01J49/24

CPC classification number: G01N27/624 ,  H01J49/0031 ,  H01J49/004 ,  H01J49/04 ,  H01J49/06 ,  H01J49/24

Abstract: A sample analysis system having a continuous beam ion mobility filter incorporates an ion removal mechanism for removing residual ions from the ion mobility filter to reduce cross-talk. A sample to be analyzed by the sample analysis system can be entered into the continuous beam ion mobility filter, which filters the ions of the sample and passes the filtered group of ions to a detector or a mass analyzer (e.g., via an ion optics assembly disposed between the mass analyzer and the ion mobility filter), where some or all of the ions in the group are detected. The ion removal mechanism then removes all or a substantial portion of the residual ions from the ion mobility filter that are left over from the first filtered group before a second filtered group is passed through. In some aspects, the ion removal mechanism can be operated concurrent with an ion removal mechanism for removing residual ions from an ion optics assembly.

公开(公告)号：US09812308B2

公开(公告)日：2017-11-07

申请号：US15299665

申请日：2016-10-21

Applicant: Shimadzu Research Laboratory (Europe) Ltd.

Inventor： Alexander Berdnikov ,  Alina Andreyeva ,  Roger Giles

IPC: H01J49/00 ,  H01J49/06

CPC classification number: H01J49/0095 ,  H01J49/06 ,  H01J49/062 ,  H01J49/065

Abstract: The present invention is concerned with a device for charged particle transportation and manipulation. Embodiments provide a capability of combining positively and negatively charged particles in a single transported packet. Embodiments contain an aggregate of electrodes arranged to form a channel for transportation of charged particles, as well as a source of power supply that provides supply voltage to be applied to the electrodes, the voltage to ensure creation, inside the said channel, of a non-uniform high-frequency electric field, the pseudopotential of which field has one or more local extrema along the length of the channel used for charged particle transportation, at least, within a certain interval of time, whereas, at least one of the said extrema of the pseudopotential is transposed with time, at least within a certain interval of time, at least within a part of the length of the channel used for charged particle transportation.

公开(公告)号：US20170301529A1

公开(公告)日：2017-10-19

申请号：US15640129

申请日：2017-06-30

Applicant: Thermo Fisher Scientific (Bremen) GmbH

Inventor： Alexander Alekseevich MAKAROV

IPC: H01J49/10 ,  H01J49/42 ,  H01J49/40 ,  H01J49/06 ,  H01J49/04 ,  H01J49/00 ,  G01N27/62

CPC classification number: H01J49/10 ,  G01N27/622 ,  H01J49/0027 ,  H01J49/0031 ,  H01J49/0481 ,  H01J49/06 ,  H01J49/063 ,  H01J49/401 ,  H01J49/4215 ,  H01J49/423 ,  H01J49/425 ,  H01J49/426 ,  H01J49/427 ,  H01J49/4295

Abstract: An ion spectrometer is provided, comprising: an ion source, arranged to generate ions continuously with a first range of mass to charge ratios; and an ion trap, arranged to receive ions from the ion source along an axis, and to eject ions with a second range of mass to charge ratios orthogonally to that axis, the second range of mass to charge ratios being narrower than the first range of mass to charge ratios. In some embodiments, ions generated by the ion source continuously flow into the ion trap. Additionally or alternatively, ion optics receive ions ejected from the ion trap and cool the ions without substantial fragmentation. An ion analyser receives ions ejected from the ion trap or ion optics and separates the ions in accordance with at least one characteristic of the ions.