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: A few questions, Richard Hull
Date: Oct 21, 10:24 am
Poster: Michael Li

On Oct 21, 10:24 am, Michael Li wrote:

Thankyou for answering my stupid questions. Here are some more.

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> The mean free path for ions in glow mode devices rarely exceeds a few centimeters. Thus, there is a lot of collisions with attendent ionizations and recombinations. The glow is given off mainly by recombinations.

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Mean free path is how far the atoms travel without colliding right? Is this the same as Debye Length? And recombination is just the ions becoming neutral by picking up electrons, right?

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>With heated dispenser cathodes ...

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What are heated dispenser cathodes? I thought cathodes just gained electrons.