#9841
Henning
Participant

redsnapper wrote: Henning,
Is there any info available on the size and composition of the X-ray converter? I saw that there was a patent issued, but my experience with patents is they’re unlikely to give you that kind of detail. (They’re supposed to be easily understood by someone “skilled in the art,” but that implies that they don’t tell you anything they absolutely don’t have to, presuming that you already know and/or are skilled enough to guess what they don’t say. That probably doesn’t cover me, in this context. :-)) I did actually take the link to the patent and I scanned the opening page – a couple of weeks ago – but really didn’t try to digest any of the content at the time.
Also, mjv1121 answered that the energy distribution between the two ion beams might only be determined after tests have gone to the next level – but I can hardy believe that there aren’t already some pretty concrete expectations – and there should be some fairly fundamental physics dictating the gross effects. (I took a plasma-physics course in grad school 33 years ago, and I hate to admit how much I’ve forgotten – though I’d feel worse if it was something I’d actually found a use for in the meantime!) In fact, I’d assume that if a Rogowski coil can be applied to the He nuclei, it could also be applied to the electron beam. If the electrons only emit 80% of their energy in X-rays, surely that remaining 20% is well-ordered kinetic energy worth going after with another Rogowski coil? The more energy you can get back directly as electricity, the better. Heck, because they’re moving electrons, they’re already electrcity (much more so than the He ions). Is there an even simpler and obvious way to funnel them into a conductor? Maybe that’s already part of the design – so self-evident that nobody’s mentioned it in one of these posts?

My interpretation of the x-ray photovoltaics:
The x-ray converter is a layer of thousands of conducting foils separated by non-conducting foils. Inner foils are made of beryllium, outer foils are made of metal of larger Z (proton count). Also the outer layers are thicker than their inner counterparts. An x-ray photon should pass several layers depending on its energy, and realease its energy as it passes its final layer. Together with the innermost layer it builds up a electrical potential. It’s more or less a capacitor (as I understand), with energy put in by photons. Anyone else to comment?

The best picture we have is the rendering by Torulf. That’s the logo on the Focus-Fusion Facebook-Group, or that rendering in LPP’s web-site: http://lawrencevilleplasmaphysics.com/

If you make the electrodes of about 10-20cm long, the whole shebang might have a diameter of 50cm, plus induction coils.

With the energy of the electron ray: I remember reading somewhere that the electron ray carries less than 1% of the energy. But I might be wrong here.

Currently the electron ray is lost on the anode. Maybe it’s possible to collect the electron energy with a third electrode within the anode’s hole — but I suspect it can’t be insulated enough from the anode, so a electrode that is close to mass would drain all of the anode.