Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ion transfer arrangement

A technology of ion migration and ion migration, which is applied in the field of high vacuum ion migration devices, and can solve the problems of high loss due to space charge effects

Inactive Publication Date: 2009-12-16
THERMO FISHER SCI BREMEN
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gas velocity is much lower in this region than on the inside of the tube, and thus space charge effects generate higher losses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ion transfer arrangement
  • Ion transfer arrangement
  • Ion transfer arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Detailed description of the preferred embodiment

[0036] figure 1 An ion transport device employing aspects of the invention is shown for transporting ions between an atmospheric pressure ion source (eg, electrostatic spray) and the high vacuum of a subsequent vacuum chamber in which one or more stages of mass spectrometry measurements are located. exist figure 1 Here, an ion source 10 such as, but not limited to, an electrostatic spray source, an atmospheric pressure chemical ionization (APCI) or an atmospheric pressure photoionization (APPI) source is located at atmospheric pressure. This generates ions in a known manner and the ions enter the ion transport device (indicated generally at 20) via the entrance aperture 30. The ions then pass through the first pump transport chamber 40 (hereinafter referred to as the expansion chamber 40 ) and continue into the second vacuum chamber 50 containing the ion conduit 60 . The ions exit conduit 60 and pass through the exit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method of transporting gas and entrained ions between higher and lower pressure regions of a mass spectrometer comprises providing an ion transfer conduit 60 between the higher and lower pressure regions. The ion transfer conduit 60 includes an electrode assembly 300 which defines an ion transfer channel. The electrode assembly 300 has a first set of ring electrodes 305 of a first width D1, and a second set of ring electrodes of a second width D2 (=D1) and interleaved with the first ring electrodes 305. A DC voltage of magnitude V1 and a first polarity is supplied to the first ring electrodes 205 and a DC voltage of magnitude V2 which may be less than or equal to the magnitude of V1 but with an opposed polarity is applied to the second ring electrodes 310. The pressure of the ion transfer conduit 60 is controlled so as to maintain viscous flow of gas and ions within the ion transfer channel.

Description

field of invention [0001] The present invention relates to ion transport devices for transporting ions within a mass spectrometer, and more particularly to high vacuum ion transport devices for transporting ions from an atmospheric pressure ionization source to a vacuum chamber of a mass spectrometer. Background of the invention [0002] Ion transfer tubes, also known as capillaries, are well known in the art of mass spectrometry for transporting ions between an ionization chamber maintained at or near atmospheric pressure and a second chamber maintained at reduced pressure. In general, ion transport channels usually take the form of elongated narrow tubes (capillaries) having an inlet end open to the ionization chamber and an outlet end open to the second chamber. Ions enter the ion transfer capillary along with charged and uncharged particles (e.g., partially desolvated droplets from electrostatic spray or APCI probes, or ions and neutrons and matrix / matrix from laser deso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/06
Inventor A·马卡洛夫R·佩施R·马雷克V·科兹洛夫斯基
Owner THERMO FISHER SCI BREMEN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com