Direct current parallel microdischarges in helium
  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. 
Thierry Dufour (GREMI, SU, LPP), Remi Dussart (GREMI), Lawrence J.   Overzet (PSAL), Philippe Lefaucheux (GREMI), Pierre Ran...
physics.plasm-ph