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

Ionization absorption spectrum detection device based on multi-channel electron multiplier

An electron multiplier and detection device technology, applied in the field of ionization absorption spectrum detection, can solve problems such as high pressure and reduced measurement accuracy

Active Publication Date: 2015-11-25
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in order to ensure that the collected signal has a better signal-to-noise ratio, the pressure of the gas to be measured in the ionization chamber is relatively high (10 -1 ~10 -3 torr), the increased gas collision broadening has an additional contribution to the peak width of the absorption spectrum, reducing the accuracy of the measurement

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
  • Ionization absorption spectrum detection device based on multi-channel electron multiplier
  • Ionization absorption spectrum detection device based on multi-channel electron multiplier
  • Ionization absorption spectrum detection device based on multi-channel electron multiplier

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] In order to measure the working performance of the MCP and obtain its optimal working state, under the condition of not changing other conditions, the change curve of the count of the MCP with the pressure in the ionization chamber was measured (such as Figure 4 shown), the solid line in the figure is the result of linear fitting, it can be seen that the MCP is at a pressure of 10 -7 Within the range of torr (normal working air pressure), the working linearity is very good.

example 2

[0056] Using the ionization chamber based on the MCP detector, the absorption spectra of gases such as argon and nitrogen were measured respectively, and the energy resolution of the dream line in the corresponding energy range was obtained respectively. Such as Figure 5 and 6 They are the absorption spectra of argon and nitrogen respectively. It can be seen that the energy resolution (E / E) has reached 10382243eV and 18000400eV respectively.

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 provides an ionization absorption spectrum detection device based on a multi-channel electron multiplier; the ionization absorption spectrum detection device includes an ionization chamber for ionizing gas, a golden net, the multi-channel electron multiplier, a voltage increasing and signal acquisition circuit, and a signal processing system; the golden net is arranged in the ionization chamber and arranged for collecting ions generated from ionization in the ionization chamber; the multi-channel electron multiplier is arranged in the ionization chamber, has the position opposite to the position of the golden net so as to form an electric field between the multi-channel electron multiplier and the golden net, receives the ions collected by the golden net through the action of the electric field and outputs a corresponding ion signal; the voltage increasing and signal acquisition circuit is connected to the multi-channel electron multiplier and arranged for providing voltage for the multi-channel electron multiplier and acquiring and outputting the ion signal; the signal processing system is arranged for receiving the ion signal and acquiring a corresponding ionization absorption spectrum according to the ion signal. The ionization absorption spectrum detection device can improve the accuracy degree of measurement beam line energy resolution ratio and reduce the influence of gas collision broadening on a final result.

Description

technical field [0001] The invention relates to the field of ionization absorption spectrum detection, in particular to an ionization absorption spectrum detection device based on a multi-channel electron multiplier device. Background technique [0002] Shanghai Synchrotron Radiation Facility (SSRF) is an advanced third-generation synchrotron radiation source, and its main performance indicators are among the top in the world. SSRF can generate a wide band from far infrared to hard X-rays, and is an irreplaceable advanced means and comprehensive research platform in many scientific researches such as life science, material science, environmental science, earth science, physics, chemistry, and information science. [0003] Dreamline is another high-performance line station following the seven beamline stations built in the first batch. It has a wide energy range (20-2000eV) and ultra-high energy resolution (greater than 10,000-1000eV) in the soft X-band ). Dreamline has two...

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
IPC IPC(8): G01N27/64
Inventor 李俊琴邹鹰陈振华薛莲王勇邰仁忠
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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