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Hollow Cathode Discharges: Analytical Applications.

Radu Mavrodineanu1

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|September 27, 2021
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Summary
This summary is machine-generated.

Low pressure glow discharges, including hollow cathode and flat cathode types, offer stable analytical sample introduction via sputtering. Their voltage-current characteristics and discharge geometry influence emission, enabling diverse material analysis.

Keywords:
Grimm dischargePaschen dischargehollow cathode dischargelow pressure glow dischargesplanar cathode dischargepulsed discharge

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Area of Science:

  • Analytical Chemistry
  • Atomic Spectroscopy
  • Plasma Physics

Background:

  • Low pressure glow discharges are crucial for elemental analysis.
  • Hollow cathode (Paschen) and flat cathode (Grimm) discharges exhibit stable voltage-current characteristics.
  • Sputtering mechanisms provide a stable, non-selective particle source for analysis.

Purpose of the Study:

  • To discuss fundamental properties of glow discharge and sputtering phenomena.
  • To describe instrumentation for analytical purposes using hollow cathode and flat discharges.
  • To explore the influence of discharge parameters on emission characteristics.

Main Methods:

  • Investigating voltage-current characteristics of glow discharges.
  • Utilizing sputtering for analytical sample introduction.
  • Describing instrumentation for hollow cathode and flat cathode discharges.
  • Analyzing the effects of discharge geometry, gas pressure, and current on emission.

Main Results:

  • Both hollow cathode and flat cathode discharges show similar voltage-current characteristics, ensuring radiation stability.
  • Sputtering mechanism ensures a stable and non-selective particle source.
  • Discharge geometry, gas properties, and current significantly affect emission characteristics.

Conclusions:

  • Low pressure glow discharges are effective for analytical applications.
  • Further developments in glow discharge technology are anticipated.
  • The study provides a comprehensive overview with extensive references.