Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Migration tube structure used for ion mobility spectrometer

A technology of ion mobility and transfer tube, which is applied in the parts of particle separator tubes, instruments, scientific instruments, etc., can solve the problems of ion loss and electric field being easily disturbed, so as to reduce input capacitance, reduce circuit noise, and improve The effect of ion transmission rate

Active Publication Date: 2009-07-01
NUCTECH CO LTD
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric field inside the transfer tube is easily disturbed, and the peripheral ions are scattered and lost due to the uneven electric field at the edge

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
  • Migration tube structure used for ion mobility spectrometer
  • Migration tube structure used for ion mobility spectrometer
  • Migration tube structure used for ion mobility spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components, although shown in different drawings. For clarity and conciseness, detailed descriptions of known functions and constructions incorporated herein will be omitted since they would otherwise obscure the subject matter of the present invention.

[0023] see figure 2 The electrode used in the transfer tube of the embodiment of the present invention is a mesh metal sheet with radian or taper, including the mesh radian or taper part 7 of the electrode sheet, and the metal wire in the dead zone is very thin. The center 8 of the electrode sheet is a round hole or a hole of other shapes, and the periphery 6 of the electrode is a metal structure 9 with a metal ring or other shapes such as a square tube on one or both sides. Electrodes close to the F...

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

The invention discloses a transfer tube structure for ion mobility spectrometers, comprising electrical pole pieces which are arranged at interval and an insulated portion, wherein, the electrical pole pieces are netted sheet metals with radians and tapers. In addition, the radian or taper portion of the electrical pole piece is provided with a mesh with higher transparency. Because of the above structure of the invention, an electric field which has evener focusing center on the periphery is to be formed on the transfer district portion, because of the toroidal structure of the electrode periphery, the influence of the extraneous electric field to the transfer electric field can be screened. Because the electrode is netted and has a circular hole in the middle, which focus and gather the ions which are not moved at the axial center as much as possible, and the ions which move toward the direction of axial center can be completely and transparently pass by.

Description

technical field [0001] The invention relates to a migration tube structure used in a detection device using ion migration technology to detect drugs and explosives, and belongs to the technical field of safety detection. Background technique [0002] The ion mobility spectrometer realizes the resolution of ions according to the different drift speeds of different ions under a uniform weak electric field. Ion mobility spectrometer usually consists of sample injection part, ionization part, ion gate or ion storage part, migration area, collection area, readout circuit, data acquisition and processing, control part and so on. [0003] In the prior art, in order to achieve higher ion transmittance, people focus on ion focusing technology. US Pat. No. 4,855,595 uses a time-varying electric field for focusing. US Patent No. 5,189,301 uses a cup-shaped electrode for focusing to increase the ion transmission rate. But many ions will scatter to the electrode and disappear. U.S. P...

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): H01J49/02G01N27/64
CPCG01N27/622
Inventor 胡海峰李元景张清军陈志强
Owner NUCTECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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