[Engineer]

AS has been mentioned, a lot of heat may be generated in the onion by both photoelectric and ohmic losses. Also some heating will occur in the inside surface from alpha and light irradiation. Is it possible to make the onion a PETE (photo enhanced thermionic emission) device?

[Engineer]

At the moment only 20% of the heating current is absorbed by the DPF plasma. So there is opportunity for efficiency by either decreasing the rise time or adding DPF filaments within the rise time of the current. I agree that cooling is a problem, and have doubts that the X-ray absorbing “onion skin” will help.
What we need to do is see what is possible, then do the engineering.

[Engineer]

I think an app might be a good way to raise
Money first by selling the app for a dollar, then by mini funding with text messages, finally with judiciously chosen advertising. For example ads might include power equipment companies, since inverters, switches, capacitors, and transformers will be needed for future power modules for clusters of Dpf fusion devices.

Finally, I hope that an app will be more mobile friendly, notifying me of special events, etc.

[Engineer]

I think what you are really asking is can the region of fusion be controlled relative to the Anode? Obviously, the plasmoid doesn’t form until the filament passes thru the toroidal magnet, which imparts the rotation force to the plasma. What is most important to me is when the collapsing magnetic field will allow for X-ray suppression from injection of electrons. If collapse occurs too close to the magnet and anode, the rotational force from the magnet may not be enough to form a stable plasmoid. The collapse time is a function of ionization and temperature of the plasma. I don’t have an equation for you but Dr Lerner may have.

[Engineer]

I am not a plasma physicist but do have degrees in electrical and materials engineering. If the nanostructure can be used to make conductive filaments of decaborane, both plasma formation and ionization may be possible by flashing the filament with an arc of electricity. Is this what you had in mind?

[Engineer]

I was wondering how the suns corona stays hotter than the photosphere. I’m guessing that solar magnetic fields keep “stirring” coronal charged particles to make up for radiational cooling. Certainly magnetic fields are moving to create flares that pump more particles into the corona. Mini flares certainly contain plasmoids. Both gravitational fusion and dpf are happening but Mostly gravity.

[Engineer]

What is missed here is a potential military application. Since most of the neutrons are generated along the axis of a dpf device, esp. from d-t fusion, it could be used as a satellite killer. Building in enough shielding to protect electronics from a serious flux of high energy neutrons is very expensive, and if such a space weapon were demonstrated, a satellite proliferation race would result to counter it. Of course, blasting satellites to pieces also fills the sky with junk.

[Engineer]

Oxide removal with microwaves should be part of “bake out”. Unfortunately, the mode shapes can be changed via a mixer, but not infinitely. If possible, a side loop of glass tubing to the vacuum pump could be coated with a ‘getter’ metal via induction evaporation, following draw down. Any oxygen released during bake or firing may be absorbed.

[Engineer]

Some things come to mind:
Tri-borane is in a low valence state so easier to ionize.
Borane is probably cheaper and more stable.
If no isotope separation occurs for B11 before combination w/H,
Extra B10 in tri-borane is wasted. Interestingly, borane is made by laser ablation of boron in hydrogen. The added step of laser isotope separation is obvious.
Equal portions of boron and hydrogen assumes 100 % conversion. If excess ions are left, hydrogen is preferred, since it increases chance of boron collision.

[Engineer]

I hope that contact ionization is adequate for borane derived plasma.
If not, more complicated methods will be needed. Has there been work done to show this?

[Engineer]

I believe that LPP has requested modeling help “similar to COMSOL”. There are many modeling companies and software ‘out there’. Wouldn’t it be best to have competing bids?

[Engineer]

Hi I am new to this site. I think high temp thermoelectric converters are the simplest way to use waste heat. Not sure what X-rays do to them.

[Engineer]

Sorry, I didn’t explain my position on government $.
1 All government money is borrowed from the future, at this time. I don’t want to encourage further increase in the national debt.
2 The mArketplace should select winners and losers, except for defense (including fissile material). Also, where our government has failed to meet their obligation to reprocess spent fuel, people may die (eg Fukishima).
3. I don’t think fusion is the right process for burning actinides into short half life isotopes. Too difficult to tune and focus the neutrons. This should be done with spallation accelerators.

[Engineer]

I think the idea of government money use for research outside of defense is indefensible. It is time for government to focus on fission fuel reprocessing and conversion to short half life isotopes.

[Engineer]

I looked at the links and was pleased to see that most neutrons might be expected along the beam axis in the a-neutron reaction. Also, found papers at ASC for photovoltaic conversion of x-rays with Pb compounds. I would like to see an engineering study to determine optimum size. Maybe too soon, but such analysis would help with financing.

[Author]

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