Doing a quick search on ADS on the literature concerning solar flares and electrical discharges (i.e. the abstract contains the words "solar flare electric discharge" I find that there are a total of 9 papers in peer reviewed journals, and the latest is from 1991 (which would be the Foukal & Hinata paper, that I already commented on a few pages back, the one that shows that the A&C double layer model is invalid in real solar prominences).
Now, it is pretty clear from the whole discussion here why one does not use the term
discharge anymore in solar and space physics. The definition for a discharge is just all over the place, many an author just used her/his own definition (look at the list I gave
in post 1441. This is clearly unworkable, say I accept Peratt's definition, then I read one of Dungey's papers, I see the word discharge and then I cannot find any of the general characteristics that Peratt (e.g. where is the break down of the medium?), Dungey just describes an increase in current.
(space/plasma/astro)physics is all about clarity, and that does not exist with this term discharge, which is a relic of the first half of the last century, where huge capacitor banks were used to study whatever electrical phenomena in the lab (basically the only sensible way to perform those experiments, when you need huge potential differences). But then you can discharge the capacitors e.g. through a metal, and see how it melts or you can drive it through a liquid (see e.g. the production of aluminium). Or you can send it through the air and create lightning in the lab. All very different ways of discharging a capacitor bank.
Therefore, we move away from such an ambiguous term, and replace it with clearer, more descriptive terms: electrostatic fields, induced electric fields, motional electric fields (
see the paper by Foukal & Hinata where they specifically list these various electric fields and call any process with a parallel electric field a discharge), which are all related to specific structures and much less ambiguous than the term discharge.
Next time: A simple description of
circuit reconnection how a
hater views it and a
believer cannot show it.