If electrons collide and lose all of their angular every time they cycle and all I am looking for is 10:1 convergence (at most, since we both agree that I don't need any convergence) then it seems to me that I have at most a 10% problem. If you want to claim that the collisionality is less, then you should take that up with Nick Krall (see reference 4 in Bussard's note).
I think the Fusion rate gain is hier for the first few convergence ratio because of the reaction that happen outside the core radius are significant in number. A quick calculation yield a 36x Fusion rate gain for a 10:1 ratio. For larger convergence ratio, it would be close to linear, with a gain G(rc) ~= 3*R/rc.
I have ussumed Ions density ~= R/rc^2 down to rc, then constant within the rc core. I end up with 25% within the core, and with about 60% of the reactions happening within 2*rc. Am I wrong here?
It is a simplimplification ofcouse, but it is to show that the first few convergence factor would help a lot.
In one of his patents I believe, Dr. Bussard was claiming that the increase colision rate close to the core would help the convergence. You claim the other way
. Not to be disrespectfull, I think Dr. Bussard had some good points there
I think it depend on how many trips an Ion will make before it is disturbed. It require 10^4 to 10^6 trips before a fusion occure, but what would be the number of trip an Ion will do across the machine before it is disturbed by something?