公开(公告)号：US20140084156A1

公开(公告)日：2014-03-27

申请号：US13626698

申请日：2012-09-25

Applicant: AGILENT TECHNOLOGIES, INC.

Inventor： Trygve RISTROPH ,  Gershon PERELMAN

IPC: H01J49/36

CPC classification number: H01J49/065 ,  H01J49/062 ,  H01J49/066 ,  H01J49/067

Abstract: Ion guides for use in mass spectrometry (MS) systems are described. The ion guides are configured to provide a reflective electrodynamic field and a direct current (DC or static) electric field to provide ion beams that are more spatially confined with a comparatively large mass range. Some ion guides are provided between the ion source and the first stage vacuum chamber of the MS system.

Abstract translation: 描述了用于质谱（MS）系统的离子导向器。 离子导向器被配置为提供反射电动力场和直流（DC或静态）电场，以提供在空间上被限制在较大质量范围内的离子束。 在离子源和MS系统的第一级真空室之间提供一些离子导向器。

公开(公告)号：US20230055007A1

公开(公告)日：2023-02-23

申请号：US17975493

申请日：2022-10-27

Applicant: AGILENT TECHNOLOGIES, INC.

Inventor： Tong CHEN ,  Gershon PERELMAN ,  Curt A. FLORY

IPC: H01J49/06

Abstract: An ion guide includes electrodes elongated along an axis from an entrance end to an exit end and spaced around the axis to surround an interior. The electrodes have polygonal shapes with inside surfaces disposed at a radius from the axis and having an electrode width tangential to a circle inscribed by the electrodes. An aspect ratio of the electrode width to the radius varies along the axis. The electrodes are configured to generate a two-dimensional RF electrical field in the interior having a multipole composition comprising one or more lower-order multipole components and one or more higher-order multipole components and varying along the axis in accordance with the varying aspect ratio, and having an RF voltage amplitude that varies along the axis.