Project: Plasma Temp-Density Diagram
(4) Comments
Discuss In ForumsAn FFS Collaboration Proposal:
Create an updated version of a plasma temperature-density diagram with thumbnails of flames, lamps, lightning. This version should show where ITER, NIF and FF-1 stand.
Once completed, we can publish it under creative commons and plaster links to it all over the place.
To collaborate - visit this thread in the forums.
As Jamesr notes in this forum post, it can be useful to introduce the dpf as a plasma device that happens to release energy by fusion:
That way you can talk about the device in context with other plasma devices people are familiar with such as candle flames, neon lamps, spark plugs, lightning.
One diagram that is often used to illustrate the point is a temperature vs density, or temperature vs density*confinement time plot showing the relationship between different plasmas, such as the images below.
For the slightly more detailed (but less pretty version) see page 41 of: NRL Plasma formulary [note: pdf file]. This little formula book is a standard reference for any plasma physicist and so contains lots of scary looking formulae. The interesting thing is unlike most simplified versions of the diagram such as the NASA one below it includes plasma focus devices at the top right corner showing they achieve the highest density/temperature combination.
The NRL chart:
Please collaborate on an updated poster via the forums.
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Comments
That last chart is very interesting. Where on it are the latest “pinches” located?
This last chart from the NRL Plasma Formulary was one of the key pieces of info that initially gave me confidence in Eric’s work back several years ago. Seeing that “Focus” in the upper right corner was huge for me. All of the “far out” scientists I’ve met had great stories and fancy equations, but that little box indicated that there was some real potential behind Eric’s ideas. I’m glad I got involved when I did and stuck with it.
Aaron, can you pinpoint the latest results there? This is several years old.
We’ll let everyone know the latest results as part of the next report. We can also take the discussion to the collaboration page. I think making a chart of our own is a great idea, and would highlight where we stand compared to other projects and to the final goal.
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