Plasmaspec

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Revision as of 08:19, 9 February 2022 by Kunhee (talk | contribs) (→‎Setup)
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Pulsed plasma in partial vacuum is characterised, by analysing line intensity ratios to determine its temperature and density. The following can be explored:

  • Passive spectroscopy
  • Active absorption spectroscopy with a laser
  • Measuring plasma frequency
  • EM wave propagation in plasma

Team members

  • Park Kun Hee
  • Yang Jincheng
  • Qin Jingwen

(Reach us if you want to join.)

Idea

In this project, a quiescent Argon plasma is produced in a vacuum by a high-voltage DC source. A spectrometer is used to obtain spectral line ratios of different transitions, through a view port. Dependence of plasma characteristics (temperature, density, frequency, etc.) on parameters such as voltage and pressure is explored.

Setup

Logistics
☐ Vacuum pump and vacuum parts
☐ Pirani gauge
☐ Can of Argon gas
☐ Electrodes
☐ Thermometer: to measure the temperature of the cathode
☐ Glass tube and glass slides
☑ High-voltage DC source: using 300 VDC for now
☐ Resistor

Measurements