Search found 2405 matches

by choff
Sun Jul 20, 2008 5:30 am
Forum: Theory
Topic: The problem with ion convergence
Replies: 126
Views: 27500

I don't understand the math either. My understanding comes from being exposed briefly to klystrons, magnetrons,and microwave guides during electronics training 35 some years ago, and reading scientific american articles on physics about as long. To my way of thinking electron flows have been precise...
by choff
Sun Jul 13, 2008 9:21 pm
Forum: Theory
Topic: plasma pressure
Replies: 2
Views: 1561

plasma pressure

I recall reading on one of rnebel's posts that the plasma pressure in a fusor was 64500 times higher on the surface than inside a tokamak, and that it got higher as it went in. Also that this made themalization irrelevant. I'm curious how much plasma pressure by itself would be required for fusion a...
by choff
Fri Jul 04, 2008 1:09 am
Forum: General
Topic: Two more months on the contract
Replies: 31
Views: 8474

I think I read one blog that said a breakeven reactor could be built for $10 Million. Depending on what 'nuanced' means maybe they get enough to try for a mimimum sized breakeven machine. With the minimalistic budget and time frame they've been forced to work with some results could be inconclusive ...
by choff
Thu Jun 19, 2008 2:52 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 39611

If the collisions happen at r=0 and everything is directed inward, I know its unlikely but??? Also the heavy material would get reused without taking part in fusion, and if the machine pulsed???
by choff
Thu Jun 19, 2008 2:23 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 39611

I noticed Dr. Nebel mentioned the possibility of injecting fuel pellets into the Polywell, that makes me wonder if a heavy inert catalyst could be tried as well, crushing the fuel together between two molecules of a much heavier element. On that note, maybe that was happening in the fusors back in t...
by choff
Sat Jun 14, 2008 5:13 am
Forum: General
Topic: Science Fiction
Replies: 24
Views: 9329

I once heard a story about ball lightning following a woman into her kitchen, so she hit it with a fly swatter! Knocked it to the floor where it disappeared.
by choff
Fri Jun 13, 2008 6:52 am
Forum: News
Topic: Another one from Alan Boyle
Replies: 52
Views: 18745

Maybe they could get Todd Rider or Richard Hull on the peer review, when the toughest skeptics are convinced then you can pretty much guarantee it works.
by choff
Mon May 19, 2008 2:02 am
Forum: Design
Topic: Fixturing For Welding Large Spheres
Replies: 21
Views: 8087

This might be more of use with small fusor design if any, but could there be any advantage to putting the vacuum chamber and pump inside of an outer vacuum chamber. Use the pump to evacuate the outer chamber half way down, seal it, then pump out the inner chamber into the outer chamber the other hal...
by choff
Tue May 13, 2008 4:18 am
Forum: Theory
Topic: First Wall Problem - Carboran
Replies: 16
Views: 5798

I remember reading a book about the early development of breeder reactors and it mentioned a Zirconium cone underneath the core. The idea was it would disperse any meltdown. On another forum I think I also recall that electrons hitting the screen on a TV cathode ray tube had the equivalent of a 200 ...
by choff
Mon Apr 28, 2008 3:06 am
Forum: Theory
Topic: How long to fully quantify reactions in Polywell
Replies: 4
Views: 1891

My speculative guess if it proves out is ten years to develop a solid working knowledge and at least another ten years for a more detailed understanding. But then new modifications/features will keep coming along that keep research going. If it only partly works research will go on in fits and start...
by choff
Sat Apr 26, 2008 11:52 pm
Forum: Theory
Topic: How long to fully quantify reactions in Polywell
Replies: 4
Views: 1891

How long to fully quantify reactions in Polywell

Dr. Bussard described the Polywell as a simple machine with wonderfully complex physics. How long would it take even with working BFR's to fully understand and model all the reactions taking place inside the machine. Months, years, or decades? Any estimates or guesses?
by choff
Sun Apr 20, 2008 5:01 pm
Forum: Theory
Topic: worst case scattering and deeper wells
Replies: 30
Views: 8266

I'm fond of Murphy's Law myself.

Nothing is as easy as it looks.

Everything takes longer than expected.

Anything that can go wrong, will go wrong, at the worst possible time.

Murphy was an optimist.
by choff
Sat Apr 19, 2008 5:05 pm
Forum: Theory
Topic: worst case scattering and deeper wells
Replies: 30
Views: 8266

For me what would hurt is the scenario where a totally unforseeable high voltage leak destroys WB7 in a similar way to WB6, and in the aftermath its found to be easily preventable in future attempts. But then the budget and time have run out on the project. Then it might take two or three more years...
by choff
Sat Apr 19, 2008 1:07 am
Forum: Theory
Topic: worst case scattering and deeper wells
Replies: 30
Views: 8266

I recall reading as a young man that when Edison was inventing the light bulb he tried no less than 100 filaments before finding one that worked. It's good that Dr. Nebel is showing due diligence and playing the hand he's been dealt, but it seems a bit like asking Edison to invent the light bulb, an...
by choff
Sun Apr 06, 2008 3:57 am
Forum: General
Topic: NRL and LPP
Replies: 10
Views: 3142

dense plasma focus

I don't understand how Lerner's dense plasma focus differs appreciably from Spheromaks and STP fusion, the latter methods have the benefit of actual research and experimentation.

Go to advanced search