a gas distributing system placed under anode in a volume, which is a subject of electron penetration and photo ionization radiation, in a lower part of discharge channel, where a discharge channel length is larger than a discharge channel width, with ionizing gas supplying holes directed tangentially into a gas input area, so {HEAD ~ a gas vortex flow} is established providing {TAIL ~ uniformly distributed working gas} under and into anode area 
is established providing
a gas distributing system placed under anode in a volume , which is a subject of electron penetration and photo ionization radiation , in a lower part of discharge channel , where a discharge channel length is larger than a discharge channel width , with ionizing gas supplying holes directed tangentially into a gas input area , so { HEAD ~ a gas vortex flow } is established providing { TAIL ~ uniformly distributed working gas } under and into anode area
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH