Plasmaspec: Difference between revisions
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Pulsed plasma in partial vacuum is characterised, by analysing [https://en.wikipedia.org/wiki/Spectral_line_ratios line intensity ratios] to determine its temperature and density. | Pulsed plasma in partial vacuum is characterised, by analysing [https://en.wikipedia.org/wiki/Spectral_line_ratios 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== | ==Team members== | ||
| Line 6: | Line 10: | ||
* Qin Jingwen | * Qin Jingwen | ||
(Reach | (Reach us if you want to join.) | ||
==Idea== | ==Idea== | ||
In this project, a | 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== | ==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== | ==Measurements== | ||
Revision as of 08:11, 9 February 2022
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