Can a fusion reaction propagate in a cappilary?

In summary, the conversation discusses the possibility of fusion reactions propagating inside a thick-walled capillary and the challenges this would present due to heat loss and pressure maintenance. It is mentioned that this idea has been explored in research and that the Lawson Criterion, which is necessary for successful fusion, may be difficult to maintain in this scenario. The concept of using a "magic capillary" is also brought up as a potential solution.
  • #1
Christofer Br
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Can fusion reaction propagate inside a (very thick walled) cappilary if fusion has been initiated at one end? In this situation it seems like all the energy would have nowhere to go but into heating and pressurizing the fuel, providing conditions for further reaction.

I imagine this is a difficult question to answer without deeper analysis, but I am certain this idea has been explored in some research, hence I am hoping someone more well versed in the topic will know the answer here
 
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  • #2
Interesting question, but how do you maintain the Lawson Criterion when the fusing material is in contact with the walls of the capillary tube (causing heat loss), and there is nothing to maintain the very high pressures necessary? ICF works because of the 3-D implosion geometry and no contact of the pellet plasma with any walls.

https://en.wikipedia.org/wiki/Lawson_criterion
 
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  • #3
If you have a magic capillary that reflects all radiation, does not heat up at all and holds arbitrary pressure: Yes.
Do you?
 
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1. Can a fusion reaction occur in a capillary?

Yes, a fusion reaction can occur in a capillary. In fact, fusion reactions are commonly studied and harnessed in small-scale devices, such as capillaries, for research and potential energy production purposes.

2. How does a fusion reaction propagate in a capillary?

A fusion reaction in a capillary is initiated by bringing together two or more atoms at extremely high temperatures and pressures. This causes the atoms to fuse together, releasing a large amount of energy. The energy released from the fusion reaction can then propagate through the capillary and be harnessed for various applications.

3. What materials are needed for a fusion reaction to occur in a capillary?

Typically, a fusion reaction in a capillary requires a high-temperature plasma, which is a gas-like state of matter where atoms are stripped of their electrons. This plasma is often created using a combination of hydrogen isotopes, such as deuterium and tritium, and a strong magnetic field to contain and heat the plasma.

4. Is a fusion reaction in a capillary safe?

Fusion reactions in capillaries are generally considered safe, as they do not produce the same harmful byproducts as nuclear fission reactions. However, the extreme temperatures and pressures needed for fusion reactions can still pose potential risks and safety precautions must be taken during research and development.

5. What are the potential applications of a fusion reaction in a capillary?

Fusion reactions in capillaries have the potential to provide a nearly limitless source of clean energy, as they produce significantly more energy than they consume. Additionally, fusion reactions can also be used for medical purposes, such as in cancer treatments, and for creating new materials through the process of transmutation.

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