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Gas Chromatography: Types of Detectors-II01:19

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In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
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Investigation of Copper-Less Gas Electron Multiplier Detectors Responses to Soft X-rays.

Bartosz Mindur1, Tomasz Fiutowski1, Stefan Koperny1

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|May 20, 2020
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Summary

New X-ray detectors using copper-less Gas Electron Multiplier (GEM) foils effectively reduce background noise in X-Ray Fluorescence (XRF) analysis. These modified GEM detectors maintain performance, showing promise for elemental analysis applications.

Keywords:
X-ray sensorsgaseous imaging and tracking sensorsmicropattern gaseous detectors

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Area of Science:

  • Nuclear Instruments and Methods
  • Materials Science

Background:

  • X-Ray Fluorescence (XRF) elemental analysis is sensitive to background noise.
  • Copper in detector components can contribute to XRF background.
  • Gas Electron Multiplier (GEM) technology is a key component in radiation detection.

Purpose of the Study:

  • To investigate the performance of X-ray detectors with reduced copper content in GEM foils.
  • To assess the impact of copper reduction on detector parameters for XRF applications.
  • To evaluate the potential of copper-less GEM detectors for suppressing XRF background.

Main Methods:

  • Systematic study of modified GEM foils with reduced copper.
  • Manufacturing copper-less GEM foils from standard copper-clad foils.
  • Testing detector variants for energy resolution, gas gain uniformity, and long-term stability.

Main Results:

  • Copper-less GEM detectors show comparable energy resolution and gas gain uniformity to standard detectors.
  • Long-term stability tests indicate no accelerated aging in copper-less detectors.
  • Reduced copper content effectively suppresses XRF background from copper.

Conclusions:

  • Copper-less GEM detectors are a viable technology for enhancing XRF elemental analysis.
  • These detectors offer a significant advantage in reducing copper-induced XRF background.
  • The modified GEM foils maintain essential detector performance characteristics.