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 Pressure
Date: Mar 03, 11:43 pm
Poster: Richard Hull

On Mar 03, 11:43 pm, Richard Hull wrote:

>Does anyone have a handle on the approximate chamber pressure where a third grid/electron source is needed for ionization?

Depending on local field emmision in a fusor with deuterium, that point can range from 10 microns to .5 microns. In short, extinction of the glow discharge is that point on the pressure curve where an electron source and ionizer grid is required. On fusor III it appears to be in the area of 1 micron.

Richard Hull