Fusion Message Board

In this space, visitors are invited to post any comments, questions, or skeptical observations about Philo T. Farnsworth's contributions to the field of Nuclear Fusion research.

Subject: Re: Fusor uses for microwaves: (going lower in f)
Date: Aug 18, 3:33 pm
Poster: Jim Lux

On Aug 18, 3:33 pm, Jim Lux wrote:

>But I now realize that the microwave oven wavelength (12 cm or 2.45 gighz) is much too short. It would allow convenient size resonant (metal) cavities, but does not give the plasmoid enough time to expand and contract.
maximum expansion. This would need a RF frequency about 400 times lower or 6 meghz to drive it. This wavelength (equivalent to 50 m) makes resonant chambers too big to be useful, but a resonant chamber is not necessarily required.

In fact, it would help a bunch that the chamber isn't resonant, because you could establish resonance outside and just couple the power in with a wire. 6MHz is low enough that you could easily get many kW of power, if you needed it.. but 100W would be just a matter of getting a solid state amateur radio transmitter, which also has a handy tuning knob, etc. You might have to flip some internal switches or solder some traces to get it to transmit outside the ham bands, but this information is readily available. High power tuners for getting the match right, as well as instrumentation, is readily available surplus for this frequency range.