I have come to a few conclusions since I last posted. Looking at Stans gas gun design, it seems as if its a pour attempt at an ionizer. We know that air ionizer need sharp points and uses one static polarity to ionize the air. In the gas gun situation, the classic air ionizer will not work well. This is because they produce ions by accelerating electrons and ions which are already in the air. These free electrons collide with gas atoms to produce ions. In a closed container, we will be limited in the effect that can be produced because of the small amount of free electrons relative to the gas we are trying to ionize.
Because of the situation, I believe it is necessary to have two plates. When a high potential is applied, the orbitals are elongated which means a much lower photon energy is necessary for ejecting electrons. This would explain Stans choice of leds. ( see tunnel ionization)