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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. The following can be explored:
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| * Passive spectroscopy
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| * Active absorption spectroscopy with a laser
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| * Measuring plasma frequency
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| * EM wave propagation in plasma
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| ==Team members==
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| * Park Kun Hee
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| * Yang Jincheng
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| * Qin Jingwen
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| (Reach us if you want to join.)
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| ==Idea==
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| 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.
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| ==Setup==
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| Logistics:
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| * Vacuum pump and vacuum parts
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| * Pirani gauge
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| * Can of Argon gas
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| * Electrodes
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| * Thermometer: to measure the temperature of the cathode
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| * Glass tube and glass slides
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| * High-voltage DC source: using 300 VDC for now
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| * Resistor
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| ==Measurements==
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