Direct current parallel microdischarges in helium
Thierry Dufour (GREMI, SU, LPP), Remi Dussart (GREMI), Lawrence J., Overzet (PSAL), Philippe Lefaucheux (GREMI), Pierre Ranson (GREMI), J.-B Lee, (PSAL), Monali Mandra (PSAL), Matthew Goeckner (PSAL), Nader Sadeghi
TL;DR
This paper investigates the electrical and spectroscopic properties of parallel micro hollow cathode discharges in helium, revealing hysteresis behavior and temperature variations with discharge current and hole size.
Contribution
It provides detailed characterization of microdischarges in helium, including the effects of hole diameter on discharge voltage and temperature, using multiple diagnostic techniques.
Findings
Hysteresis cycle observed in V-I curves between Townsend and glow regimes
Gas temperature ranges from 300 to 500°C for 4-10mA current
Smaller hole diameters require higher discharge voltages
Abstract
Parallel Micro Hollow Cathodes Discharges are characterised by electrical and spectroscopic studies and by using an ICCD camera. V-I curves present a hysteresis cycle between Townsend and normal glow regimes. For I d =4-10mA, gas temperature ranges between 300-500{\textdegree}C. When the diameter of a hole decreases, a more significant discharge voltage is needed.
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Taxonomy
TopicsPlasma Diagnostics and Applications · Particle accelerators and beam dynamics · Quantum, superfluid, helium dynamics