Near-field plume mass-spectroscopic diagnostic E*B probe based on Faraday cup

A Faraday cage and probe technology, applied in material excitation analysis, thermal excitation analysis, etc., to achieve the effect of reducing the edge effect of electromagnetic field, enhancing the strength of magnetic field and the uniformity of electromagnetic field, and the uniformity and orthogonality of electromagnetic field

Inactive Publication Date: 2015-06-24
BEIHANG UNIV
View PDF5 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no E×B probe dedicated to the measurement of divalent ions in the near-field plume of ion thrusters and Hall thrusters.

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
  • Near-field plume mass-spectroscopic diagnostic E*B probe based on Faraday cup
  • Near-field plume mass-spectroscopic diagnostic E*B probe based on Faraday cup
  • Near-field plume mass-spectroscopic diagnostic E*B probe based on Faraday cup

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0043] The present invention is a near-field plume mass spectrometry diagnostic E×B probe based on a Faraday cup, such as figure 1 and Figure 4 As shown, the main body of the E×B probe 1 is a cubic structure, with a columnar collimator tube 201 / 202 installed on the front end, a drift tube 207 / 208 and a Faraday cup collector 209 installed on the rear end, and placed in the near-field plume of the thruster. Used to collect monovalent ions and divalent ions.

[0044] The E×B probe includes: center frame 203, ferrite permanent magnet 302, flat electrode plate 216, electrode plate fixing seat 206, collimator tube 201 / 202, drift tube 207 / 208, Faraday cage 209, carbon steel Housing 204 / 205 / 215 / 301, anti-sputtering heat insulation layer 401.

[0045] The specific connection relationship is as follows: with the center frame 203 as the main structure, t...

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 near-field plume mass-spectroscopic diagnostic E*B probe based on the Faraday cup and belongs to the technical field of plasma mass-spectroscopic diagnosis. The probe mainly applied to measuring near-field plumes of an ion thruster and of a Hall thruster comprises a central frame, ferrite permanent magnets, a flat electrode plate, an electrode plate holder, a collimator tube, a drift tube, a Faraday cup, six carbon steel shells and an anti-sputtering heat-insulating layer. According to the connectional relation, the central frame is used as a core part, the ferrite permanent magnets are distributed on upper and lower surfaces of the central frame, the electrode plate is fixed in the central frame, and an orthogonal electromagnetic field area is formed. The six carbon steel shells are used for packaging, and the front ends of the shells are coated with an anti-sputtering heat-insulating layer. The collimator tube of stainless steel and the drift tube are fitly fixed to the centers of two ends of the central frame through shaft holes. Ions different in valence are screened by adjusting voltage among the electrode plates, univalent and bivalent ion currents are acquired with the Faraday cup of aluminum, and the ratio of near-field plum bivalent ions is acquired by analytical computing.

Description

technical field [0001] The invention belongs to the technical field of plasma mass spectrometry diagnosis, and specifically refers to a mass spectrometer that utilizes the principle of a Wien velocity filter to separate ions with different charge numbers and uses a Faraday cylinder to collect ion currents. It is mainly used in electric propulsion research. Measure the ratio of divalent ions in the near-field plume of ion thruster and Hall thruster. Background technique [0002] Electric propulsion is a propulsion method that uses electric energy to heat or ionize the propellant to accelerate the working fluid to form a high-speed jet and eject it to generate thrust. The biggest feature of electric propulsion is small thrust, high specific impulse, high efficiency and long life, and it has broad application prospects in space missions such as orbit control of large spacecraft, deep space exploration and interstellar navigation. [0003] Ion thrusters and Hall thrusters are c...

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): G01N21/73
Inventor 吴亚雄何青松王海兴
Owner BEIHANG UNIV
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap