公开(公告)号：US20240331967A1

公开(公告)日：2024-10-03

申请号：US18407388

申请日：2024-01-08

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Myoung Choul Choi ,  Woo Jun Byeon ,  Byeong Jun Cha

IPC: H01J37/08

CPC classification number: H01J37/08 ,  H01J2237/032 ,  H01J2237/0805 ,  H01J2237/208

Abstract: A liquid metal ion source device for using bismuth and an alloy of the bismuth is provided. The liquid metal ion source device includes a base formed of an electrically insulating material, two electrodes connected to the base and configured to supply current, a needle mounted on the base and configured to pass through the base, a filament including a pair of connection rods connected to the two electrodes, respectively, a pair of support rods formed to be extended from the pair of connection rods, respectively, and provided in a direction away from the base and towards the needle, and a filament head connecting the pair of support rods to one another and having a shape curved toward the base, and a reservoir configured to accommodate at least a portion of the filament head inside the reservoir and store a liquid metal.

公开(公告)号：US10699868B2

公开(公告)日：2020-06-30

申请号：US16185527

申请日：2018-11-09

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Chang Min Choi ,  Myoung Choul Choi ,  Sang Ju Lee ,  Ji Young Baek ,  Jeong Jin Kim

IPC: H01J37/08 ,  G01N29/44 ,  H01J37/244

Abstract: Disclosed is a device for generating an organic molecular cluster ion beam, the device including a receiver configured to accommodate an organic material, a cluster generator configured to generate a cluster by supersonic expanding the organic material accommodated in the receiver at a high speed, a photo-ionizer configured to temporarily accommodate the cluster that is generated through the cluster generator, an ultraviolet (UV) light source configured to irradiate an UV pulse to the photo-ionizer to ionize the cluster, and entrance electrodes disposed at both sides of the photo-ionizer and configured to provide a potential difference to the photo-ionizer to generate a cluster ion beam.

公开(公告)号：US20200152410A1

公开(公告)日：2020-05-14

申请号：US16663341

申请日：2019-10-25

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Myoung Choul Choi ,  Boo Ki Min ,  Sang Ju Lee ,  Chang Min Choi ,  Ji Young Baek ,  Jae yeong Eo ,  Il Hee Kim

IPC: H01J37/08

Abstract: An ion beam generating device includes a liquid metal ion source configured to melt metal and emit an ion beam, and an extractor disposed under the liquid metal ion source and configured to extract the ion beam emitted from the liquid metal ion source. The liquid metal ion source includes a storage configured to accommodate the metal, an emitter configured to receive the metal from the storage and emit the ion beam, and a heater configured to heat the emitter or the storage. The heater is configured to directly heat the metal accommodated in the storage to melt the metal into a liquid state, and an amount of the ion beam to be extracted is controlled by a voltage difference that changes based on a distance between the emitter and the extractor.

公开(公告)号：US10209220B2

公开(公告)日：2019-02-19

申请号：US15323317

申请日：2015-11-26

Applicant: Korea Basic Science Institute

Inventor： Myoung Choul Choi ,  Jeong-Hoon Kang ,  Jung-Hwan Kim

IPC: G01N27/62 ,  H01J49/16 ,  H01J49/00 ,  G01N27/64

Abstract: Provided are an apparatus for measuring an ionic mobility of a harmful material and a reference data obtaining method thereof. The method includes obtaining a measurement signal by detecting a charge of an ion between electrodes, obtaining a noise signal by insulating the electrodes from the ion, aligning the noise signal with the measurement signal, removing a part of the measurement signal aligned with the noise signal, and calculating reference data from a remaining part of the measurement signal.

公开(公告)号：US09129788B2

公开(公告)日：2015-09-08

申请号：US14351524

申请日：2012-10-10

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Myoung Choul Choi ,  Sang Hwan Choi ,  Se Gyu Lee ,  Jeong Min Lee

IPC: H01J49/00 ,  H01J49/06

CPC classification number: H01J49/067 ,  H01J49/0027 ,  H01J49/0054 ,  H01J49/062 ,  H01J49/38

Abstract: A lens for electron capture dissociation may include: a first electrode and a second electrode spaced apart from each other and arranged along a first direction; and a third electrode and a fourth electrode spaced apart from each other and arranged along a second direction perpendicular to the first direction. The first electrode and the second electrode may be disposed in a space in which a magnetic field is formed in the first direction and trap electrons. The third electrode and the fourth electrode may be in the form of a flat plate and may apply an electric field to the trapped electrons in the second direction.

Abstract translation: 用于电子捕获解离的透镜可以包括：第一电极和彼此间隔开并沿着第一方向布置的第二电极; 以及与第一方向垂直的第二方向配置的第三电极和第四电极。 第一电极和第二电极可以设置在其中在第一方向上形成磁场并捕获电子的空间中。 第三电极和第四电极可以是平板的形式，并且可以在第二方向上对捕获的电子施加电场。

公开(公告)号：US20210090873A1

公开(公告)日：2021-03-25

申请号：US16937862

申请日：2020-07-24

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Ji Young Baek ,  Myoung Choul Choi ,  Chang Min Choi ,  Sang Ju Lee ,  Boo Ki Min

IPC: H01J49/16 ,  H01J49/40 ,  H01J49/00

Abstract: A mass spectrometry system includes a sample holder provided in a vacuum changer and on which a sample is disposed, an irradiator configured to perform sputtering or ionization on the sample, an analyzer configured to analyze an ionized sample generated from the sample by the irradiator, and a controller configured to control the irradiator or the analyzer and perform a first process and a second process. The first process is to determine position information of materials in the sample by irradiating a laser or ion beam to a portion of the sample, and the second process is to irradiate a laser or ion beam of a first output value to another portion of the sample in a section in which the materials in the sample change and irradiate a laser or ion beam of a second output value in other sections.

公开(公告)号：US20140284470A1

公开(公告)日：2014-09-25

申请号：US14351524

申请日：2012-10-10

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Myoung Choul Choi ,  Sang Hwan Choi ,  Se Gyu Lee ,  Jeong Min Lee

IPC: H01J49/06 ,  H01J49/00

CPC classification number: H01J49/067 ,  H01J49/0027 ,  H01J49/0054 ,  H01J49/062 ,  H01J49/38

Abstract: A lens for electron capture dissociation may include: a first electrode and a second electrode spaced apart from each other and arranged along a first direction; and a third electrode and a fourth electrode spaced apart from each other and arranged along a second direction perpendicular to the first direction. The first electrode and the second electrode may be disposed in a space in which a magnetic field is formed in the first direction and trap electrons. The third electrode and the fourth electrode may be in the form of a flat plate and may apply an electric field to the trapped electrons in the second direction.

Abstract translation: 用于电子捕获解离的透镜可以包括：第一电极和彼此间隔开并沿着第一方向布置的第二电极; 以及与第一方向垂直的第二方向配置的第三电极和第四电极。 第一电极和第二电极可以设置在其中在第一方向上形成磁场并捕获电子的空间中。 第三电极和第四电极可以是平板的形式，并且可以在第二方向上对捕获的电子施加电场。