Search found 219 matches

by tonybarry
Sun Jul 06, 2008 11:27 am
Forum: Theory
Topic: The problem with ion convergence
Replies: 126
Views: 61705

Pardon me for asking this Art, but if the ions are not oscillating through the centre of the potential well, then they must be orbiting in some elliptical orbit. If they orbit in this fashion, will not their energy of rotation be leeched by the EM field they travel through, causing them to spiral ba...
by tonybarry
Sun Jul 06, 2008 10:47 am
Forum: Design
Topic: Whats to be learned by comparing WB-6 and WB-7?
Replies: 5
Views: 5898

Hello Aero, I have a PDF of Bussard's WB-6 report, where he gives the coil dimensions as ID=201mm, OD=307mm, and overall MaGrid height as 393mm. The PDF is titled:- Final Successful Tests of WB-6; October/November 2005 Robert W. Bussard and R. Michael Wray EMC2-0806-04 rev. 0107 Regards, Tony Barry
by tonybarry
Thu Jul 03, 2008 12:28 pm
Forum: Theory
Topic: Why is polywell supposed to be better than cusp confinement?
Replies: 74
Views: 52863

Hello Carter, I think your logic is sound. Unfortunately when dealing with plasmas, experiment has traditionally guided theory (according to Joe Khachan, the local IEC guy at the Uni. of Sydney). For this reason, we really need experimental measurements of the fields around a working polywell to poi...
by tonybarry
Wed Jul 02, 2008 10:56 am
Forum: News
Topic: Roger Fox's 01 July 008 KOS Diary
Replies: 10
Views: 7187

Yes, Simon, I just wonder what might be happening here. Do you think the idea of the 500kUSD WB-7 clones is still likely? or is it full steam ahead for the net power machine?

Would be good to be part of the action.

Regards,
Tony Barry
by tonybarry
Tue Jul 01, 2008 10:28 am
Forum: Theory
Topic: Electron recirculation
Replies: 106
Views: 51440

Hello dch24, I liked your post. Good to see you grappling with the ideas. A point. The direct conversion grid is charged to a bit less than +1.8MV, not +5MV. The alphas emerge from the fusion region with about 1.8MeV of kinetic energy, and the DCG provides a field to offer electric braking. When an ...
by tonybarry
Tue Jul 01, 2008 1:15 am
Forum: Theory
Topic: A few questions about the polywell design
Replies: 3
Views: 4130

Hello Robthebob,
Welcome to Talk-Polywell. Hope your stay here is productive. May I suggest you have a look at Joe Strout's index page here. The material on that will probably get you up to speed. In particular, the page by MSimon here.

Regards,
Tony Barry
by tonybarry
Mon Jun 30, 2008 9:54 pm
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 80271

With all due respect to Indrek, we must firstly establish the correctness of this model before making decisions based on it. Indrek's work relies wholly on numerical simulation and not on experimental results, therefore it is within the realm where people remote from the site may do useful checking....
by tonybarry
Mon Jun 30, 2008 9:54 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 80271

My previous post got me to thinking ... what is the diameter ratio for a polywell coil in an orthogonal setting such that:- the radius from the centre of the coil to the inner coil surface is the same as the distance from the coil outer surface to the corner cusp ? By using such a ratio, the leakage...
by tonybarry
Mon Jun 30, 2008 9:14 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 80271

Hello Indrek, Thank you for your speedy reply. Much appreciated. I gather from your note, and the rest of this thread that I have been re-reading since I posted the previous comment, that your simulation included the effect of electrons circulating in the polywell; and the result you present is the ...
by tonybarry
Mon Jun 30, 2008 8:51 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 80271

Hello Indrek, That looks nice. Can you tell me what the axes represent? I assume the "floor" represents x and y as a cross-section through the coil centres and the polywell centre, and I assume the height represents magnetic field (or perhaps electron density? or something else). When you say the "f...
by tonybarry
Sun Jun 29, 2008 11:38 am
Forum: Networking
Topic: Lend a hand please
Replies: 4
Views: 15381

Hello Roger,
I signed up, but found the posts to be a little picky. I offered my two cents worth, citing rnebel's statements on MSNBC.

Regards,
Tony Barry
by tonybarry
Sun Jun 29, 2008 11:32 am
Forum: Theory
Topic: Electron recirculation
Replies: 106
Views: 51440

Yes Simon you are correct, and a moment's thought should have alerted me to the falsity of my previous statement. A Faraday cage is reciprocal, else a microwave oven would radiate nicely. However, a voltage gradient must still be able to exist within a cage, providing a boundary without making deman...
by tonybarry
Sun Jun 29, 2008 4:23 am
Forum: Theory
Topic: Electron recirculation
Replies: 106
Views: 51440

But, as has been discussed, there's no net force inside a spherical conductor, so we don't think this will work. I think this is not correct. There ought to be a net force able to exist inside a spherical conductor, where there is a dielectric separating the inside "centre" from the outside sphere....
by tonybarry
Thu Jun 26, 2008 8:43 am
Forum: Theory
Topic: Why is polywell supposed to be better than cusp confinement?
Replies: 74
Views: 52863

Hello Dr. Carlson, Welcome to Talk-Polywell. I hope your visits here are as productive for you as I am sure they will be for me. If I can, I will uncover the soft underbelly of the polywell concept and eviscerate it. Then you will all thank me kindly for stopping your waste of time, and we will all ...
by tonybarry
Tue Jun 24, 2008 8:42 pm
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 80271

Nebel's answers have not changed my mind, but they are interesting enough to keep me talking. I think, however, that http://www.talk-polywell.org/bb/viewforum.php?f=3 is a more appropriate and more convenient forum. Anyone who wants to follow this discussion should move over there. This is great. W...