As far as I can see there would be a factor 10-5 or so less D than H, at least in the energetic events.
Yes, that is precisely the measure that I've encountered a couple of times (it was also in this 1974-year paper).
Well, the "near-zero" deuterium abundance (as you say) is a MAJOR problem for the electrochemical (EDM) production of water in the EC fantasy.
1) I'm still not sure that it is near-zero, and I'm still looking for "peer-reviewed" measurements.
2) Even one order of magnitude less than what is needed (as we observe during the flares) could be enough if some sort of enrichment process is present.
Just stumbled upon one paper (I cannot yet provide URL's due to the forum regulations, so I'll give a DOI number: 10.1029/2000JE001277). The modeling presented there for the Moon shows an increase of solar wind-blown D/H ratio of magnitude of 4 over time (due to the particle migration). This almost gives us our missing order of magnitude.
Seems like here is a paper which mentions determination of D in the solar wind in some of its references
I've seen this paper before, but unfortunately cannot see any relevant links there. Only some protosolar calculations. And also a point that in the interstellar medium the ratio is also 10
-5, which is kind of interesting, but also irrelevant to the topic.
to actually quantify this electrochemical production of water (or OH, whatever you fancy) in the EC fantasy model.
It's quite easy, I think.
Take a solar wind speed (say, 500 km/s), the area affected by it (for example, the core being a circle perpendicular to the solar wind stream and having a radius of 1 km -> 3.14*10
6 m
2), calculate the according volume/s (1.5*10
12 m
3 s
-1), then multiply it by the solar wind density (say, 10
7 m
-3 -> 1.5*10
19 s
-1). So we've got roughly 10
19 hydrogen atoms per second, i.e. 10
-4 moles, i.e. 10
-6 litres of water per second.
Just tell us how it works, how the flux of solar wind protons interacts with the comet, and how you create your H2O or OH at a rate that is actually observed.
If I knew that in detail, I wouldn't have come here: instead of that my articles probably would have already swarm arXiv and other such resources.
The general scheme is that the highly electronegative oxygen is being removed from the surface of the core towards the positive solar wind current. I'm afraid that we know too little at present to draw a precise mechanism of this process.
In case you want to take it a step further, please show us in the fields data that actual EDM is taking place. Look back in the thread, the data for e.g. comet 1P/Halley are freely available through PDS (NASA) and PSA (ESA). Discharges are quite particular in the signatures that they produce.
Thanks, I'll probably do that, but not right now.