Electrical stuff is always best described (officially) as 'Galvanic' I reckon. 'A Galvanic Projector' (aka, to the Tommy Lobsters, a 'lightning gun', or as we'd call it a laser rifle)
The standard term for plasma is 'Aetheric Flux', isn't it? It works by the process of Agitation of the Aetheric Flux (probably as a result of Applied Galvanism, or something), as far as I'm aware. I'm certainly working on plans for a 'aetheric flux bombard' (or plasma cannon in early C21st lingo).
There is a thread on this from a while ago, where some of us were tossing around ideas for how all this lovely technology worked. I'll see if I can dig it out.