Distribution of particle energy in 3He fusion

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Discussion Overview

The discussion revolves around the energy distribution of fusion products in the 3He-3He fusion reaction, specifically focusing on the total energy release of 12.9 MeV. Participants explore how this energy is allocated among the resulting particles, including protons and alpha particles, and seek methods to derive this distribution.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant notes the total energy release of 12.9 MeV in the 3He-3He fusion cycle but expresses uncertainty about how this energy is distributed among the fusion products.
  • Another participant suggests writing down the total reaction to clarify the process.
  • A participant proposes the reaction equation 3He + 3He -> 2p + 4He + 12.85 MeV, indicating a possible formulation of the reaction.
  • One participant mentions that having three bodies in the final state implies a continuous energy spectrum for the products.
  • Another participant draws a parallel to beta decay, suggesting that basic kinematics could apply to understanding the energy distribution.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the specific distribution of energy among the fusion products, and multiple viewpoints regarding the approach to derive this distribution are presented.

Contextual Notes

There are limitations regarding the assumptions made about the energy distribution and the dependence on the definitions of the reaction products. The discussion does not resolve the mathematical steps necessary to derive the energy distribution.

MnemosyneAH
Messages
6
Reaction score
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The 3He-3He fuel cycle releases protons and alpha particles, plus 12.9 MeV of energy. No matter where I look, I can't find any information about how that 12.9 MeV is distributed over the fusion products, every source just quotes the 12.9 total.

Does anyone know how this energy tends to be distributed, or can show me how to derive it (I'm sure there must be an equation, but I'm only a beginner at this, so I can't guess at what it is).
 
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write down the total reaction
 
3He + 3He -> 2p + 4He + 12.85 MeV ?
 
3 bodies in the final state means that they all have a contunous energu spectra
 
Huh, okay then.
 
MnemosyneAH said:
Huh, okay then.

just as in beta decay for instance, basic kinematics
 

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