Search found 27 matches

by jarek
Sat Apr 28, 2018 5:33 pm
Forum: Theory
Topic: Anderson-like localization for electron currents in plasma?
Replies: 0
Views: 2999

Anderson-like localization for electron currents in plasma?

Electron currents in plasma are usually modeled using classical diffusion. However, semiconductor studies have shown that there is a problem with using classical diffusion for modeling electron conductance: it leads to nearly uniform probability distribution of electrons, what means that electric fi...
by jarek
Thu Jan 12, 2017 7:11 pm
Forum: Theory
Topic: Electron's magnetic moment in plasma/fusion physics?
Replies: 19
Views: 8875

Re: Electron's magnetic moment in plasma/fusion physics?

Regarding electron screening, imagine p-e-p initial symmetric situation - Coulomb force says that proton is four times stronger attracted by electron than repulsed by the second proton. It seems initial symmetric p-e-p situation should collapse (into deuteron) - just like that. However, the standard...
by jarek
Wed Jan 11, 2017 12:09 pm
Forum: Theory
Topic: Electron's magnetic moment in plasma/fusion physics?
Replies: 19
Views: 8875

Re: Electron's magnetic moment in plasma/fusion physics?

First of all, let me remind why electron's magnetic dipole moment seems important from the point of view of fusion - I think the most crucial are back-scattering (on nucleus) type of electron trajectories due to the resulting Lorentz force, like (from simulation): https://dl.dropboxusercontent.com/u...
by jarek
Tue Jan 10, 2017 3:25 pm
Forum: Theory
Topic: Electron's magnetic moment in plasma/fusion physics?
Replies: 19
Views: 8875

Re: Electron's magnetic moment in plasma/fusion physics?

Here is a simple simulator for single-electron trajectories in proton's potetnial with included Lorentz force from electron's magnetic dipole moment: http://demonstrations.wolfram.com/KeplerProblemWithClassicalSpinOrbitInteraction/ Equation is in Details section. We get analogous correction in gravi...
by jarek
Fri Aug 03, 2012 3:48 pm
Forum: Theory
Topic: Can proton share its charge with neutron?
Replies: 2
Views: 5917

Can proton share its charge with neutron?

Why neutron requires charge to become stable? Why against Coulomb attraction, nucleus require charge? How this charge is distributed inside nucleon (quarks)? Nucleus? Large nuclei are believed to behave like a liquid – are nucleons freely swimming there, or maybe they are somehow clustered, like in ...
by jarek
Tue Apr 03, 2012 5:54 am
Forum: Theory
Topic: Thermodynamical quantum localization in plasma physics?
Replies: 1
Views: 2363

Another "quantum" effect which could be not completely negligible (?) in fusion physics is synchronization of quantum phases - it could make there is preferred some local dynamical equilibrium. To imagine what does it mean, there are great classical analogues of wave-particle duality of Co...
by jarek
Thu Nov 17, 2011 11:07 am
Forum: Theory
Topic: Thermodynamical quantum localization in plasma physics?
Replies: 1
Views: 2363

Thermodynamical quantum localization in plasma physics?

Using quantum mechanics to predict particle dynamics is usually related to low energy physics, suggesting that we can nearly forget about it while considering high energy plasma (?) There are some recent thermodynamical considerations suggesting that situation might be more complicated - that "...
by jarek
Fri Jul 01, 2011 10:38 am
Forum: Theory
Topic: Please prove Vacuum energy
Replies: 10
Views: 4383

I'm not an expert, but intuition suggests that coronal discharge isn't required to transmit charge - it's enough that there are some ions in the medium and so they statistically travel accordingly to created potential gradient (diffusion) - equalizing the charge and using part of gathered energy to ...
by jarek
Wed Jun 29, 2011 10:24 am
Forum: Theory
Topic: Please prove Vacuum energy
Replies: 10
Views: 4383

I've briefly looked at the 125 page paper on the rotor description - from page 49: "At the beginning a voltage of U = 7kV was applied, and the rotor began to rotate. After approximately half an hour, 6…8 revolutions have been fulfilled, and the data acquisition started at a moment at which the ...
by jarek
Fri Jun 10, 2011 3:05 pm
Forum: Theory
Topic: Is magnetic flux quantified only near superconductors?
Replies: 22
Views: 9383

Don't worry - they also don't know and it's why it is still called the coronal heating problem ... The energy of magnetic field comes from extremely interesting internal dynamics of Sun ... for example on equator it makes full rotation in 25.6 days, while on poles in 33.5 days ( http://en.wikipedia....
by jarek
Fri Jun 10, 2011 2:40 pm
Forum: Theory
Topic: Is magnetic flux quantified only near superconductors?
Replies: 22
Views: 9383

Joseph, as I've written they are working on this looking fundamentally coronal heating problem for decades, mass transfer is definitely not enough and fusion is practically negligible ... so it seems there are two main approaches now: by magneto-acoustic waves and by magnetic reconnections ... There...
by jarek
Mon May 30, 2011 8:37 am
Forum: Theory
Topic: Is magnetic flux quantified only near superconductors?
Replies: 22
Views: 9383

From corona article : "For decades, researchers believed spicules could send heat into the corona. However, following observational research in the 1980s, it was found that spicule plasma did not reach coronal temperatures, and so the theory was discounted." Solar wind article says that it...
by jarek
Mon May 30, 2011 8:09 am
Forum: Theory
Topic: Is magnetic flux quantified only near superconductors?
Replies: 22
Views: 9383

jarek, you might be interested to read Thomas Smid's ideas; http://www.plasmaphysics.org.uk/research/sun.htm crismb, using virial sounds interesting ... but it's completely not this case - it's used for simple situations of stable gravitational systems. Here we would need some concrete source of su...
by jarek
Sun May 29, 2011 7:30 am
Forum: Theory
Topic: Is magnetic flux quantified only near superconductors?
Replies: 22
Views: 9383

Your hypothesis seems to be related with 'spikules' , but the Wikipedia article says that it has been discounted. According to this articles there are two mainstreams of trying to explain this fundamental MHD problem: - by magneto-acoustic waves from the sun, or - the magnetic reconnections I'm talk...

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