Search found 144 matches
- Fri Feb 06, 2009 8:02 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
- Fri Feb 06, 2009 6:23 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
Your logic is flawed. Ions do not have to move into the cusp at the same rate as electrons in order to maintain quasi-neutrality. If ions and electrons leave at the same rate that they enter (and this is true anywhere in the plasma) then quasi-neutrality can maintained. They simply have to leave at ...
- Thu Feb 05, 2009 11:36 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
Electrons in both the Elmore-Tuck-Watson machine and the Polywell are formed at ground. Consequently, if they go back to ground there isn't a significant energy loss. The only way they can do this is if they are upscattered in energy. The major "cost" is that you have to have larger electron sources...
- Thu Feb 05, 2009 6:00 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
- Wed Feb 04, 2009 11:01 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
This is all very simple. In steady-state, ions and electrons leave the device at the rate they are injected. For closed field line systems like tokamaks, you have to inject neutral particles in order to get them across the magnetic field. This is generally a gas puff, frozen DT pellets, or neutral b...
- Wed Feb 04, 2009 5:32 pm
- Forum: News
- Topic: Google Polywell Fusion Counter
- Replies: 207
- Views: 96581
- Fri Dec 19, 2008 6:37 pm
- Forum: News
- Topic: MTF Illustration
- Replies: 64
- Views: 60820
This is basically LINUS revisited. LINUS was an experiment done at NRL in the 70s where a plasma was imploded with a liquid wall. I believe the plasma was a Z-Pinch. The idea behind MTF plasmas is that the magnetic fields provide thermal insulation, but not confinement forces which come from the lin...
- Fri Oct 31, 2008 1:01 am
- Forum: News
- Topic: Found this during google search on Polywell Fusion
- Replies: 55
- Views: 160543
- Wed Oct 22, 2008 6:46 pm
- Forum: Theory
- Topic: EMC2's EIXL code and state-space modeling
- Replies: 6
- Views: 5532
EIXL is a 1.5-D Vlasov-Poisson equilibrium solver. The fact that it's Vlasov means that it doesn't have collisions. It assumes 1-D spherical potential wells. The .5-D is that it assumes finite angular momentum which is a conserved quantity. The fact that it is an equilibrium code generally means tha...
- Sun Oct 19, 2008 10:03 pm
- Forum: Theory
- Topic: Central electron temperature and p-B11 power balance
- Replies: 56
- Views: 32987
I would say that the following is true: 1. P-11B is a very different beast to optimize than D-D or D-3He due to the Bremsstrahlung. 2. If all you had to do was to light the plasma against transport (and the theoretical scaling laws work) then one could get very large Qs from P-11B. This is the upper...
- Fri Oct 17, 2008 9:24 pm
- Forum: Theory
- Topic: Central electron temperature and p-B11 power balance
- Replies: 56
- Views: 32987
Actually, you can get the energy differential back as well (though in practice it won't be 100%, I'm sure). What you do is keep the electron guns at a little higher potential than the wall which is at ground. In vacuum tubes they do this by having a small resistor between the e-guns and ground. You ...
- Fri Oct 17, 2008 7:41 pm
- Forum: Theory
- Topic: Central electron temperature and p-B11 power balance
- Replies: 56
- Views: 32987
As near as I can tell, the arguments being made here are the same as those made by Rider many years ago. The problem is that you can’t study the polywell physics in isolation, you have to study the system as a whole. This is the mistake that Rider made and it appears to be the mistake that is being ...
- Mon Oct 06, 2008 6:06 pm
- Forum: General
- Topic: Nuclear Power plant applications.
- Replies: 21
- Views: 12559
- Mon Oct 06, 2008 5:58 pm
- Forum: News
- Topic: ITER vs the Stone Axe
- Replies: 52
- Views: 29059
JMC: First of all, let me reiterate that even though I’m not a big fan of ITER we’re not out to shut it down. The ITER people spent a long time building a consensus in the fusion program to build that machine and it wouldn’t be right for me to try to impose my opinions on them. If people want to wor...
- Fri Oct 03, 2008 5:49 pm
- Forum: News
- Topic: ITER vs the Stone Axe
- Replies: 52
- Views: 29059
JMC: “As far as I've heard RFPs and spheromaks are horrendously unstable and so probably won't achieve ignition anyway.” This is another self-fulfilling prophecy which has been promoted by the people in the Tokamak community. In the late 80s Los Alamos was building a large RFP called ZT-H. It was ab...