Containing Plasma - Electric & Magnetic Fields Explained

  • Context: Undergrad 
  • Thread starter Thread starter EvilTesla
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    Plasma
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Discussion Overview

The discussion revolves around the principles of containing plasma using electric and magnetic fields, with a focus on understanding the physics behind various plasma confinement methods, including the Tokamak reactor. Participants express interest in finding accessible information on the topic.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant mentions the need for both electric and magnetic fields to contain plasma and seeks further information.
  • Another participant references the Tokamak as a magnetic confinement method, sharing their experience related to amateur particle acceleration.
  • A participant expresses difficulty in finding comprehensible resources on the physics of Tokamaks and plasma confinement, suggesting a preference for more accessible materials.
  • A link to a comprehensive resource on plasma physics is provided, although one participant expresses concern about the length and complexity of the material.
  • Another participant notes that the requirements for plasma containment vary significantly depending on the type of plasma, providing examples such as candle flames, lightning, neon signs, and solar plasma.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best methods for understanding plasma confinement, and multiple perspectives on the topic are presented, indicating that the discussion remains unresolved.

Contextual Notes

Some participants express uncertainty regarding the accessibility of scientific literature on plasma physics, and there is a lack of clarity on the specific physics principles involved in different plasma containment methods.

EvilTesla
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Recently I have heard that to contain a plasma, you need both an electric and magnetic field.

I'd like to look into this more, does anyone know where I can find information on it?
 
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I can't remember where it is but look up a toroid plasma reactor thingy. It uses magnetic fields. Found out about it as we were making our amateur particle accelerator. The reactor starts with a T...thats all i know :)

EDIT: Tokamak <---that's it.
 
That's the problem.

I can find articles on the EXISTENCE of a Tokamak, but nothing on the physics that I can understand.

Maby that's the problem, I COULD just look up a bunch of papers on plasma confinement, but I know I wouldn't understand them..
 
MMM!

thanks very much


wow...261 pages. I hope I have the time, perservearence, and knowledge to understand it all.
 
It depends on the plasma.

A candle flame, a very weak plasma, requires nothing to "contain it". A bolt of lightning is self-contained by its own electromagnetic pinch. The plasma in a neon sign is contained by glass (though it forms a sheath parallel to the glass surface). And the plasma in the Sun is almost contained by gravity (but it leaks out through the solar wind)
 

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