What are the basics of fusion in particle physics?

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Discussion Overview

The discussion revolves around the basics of fusion in the context of particle physics, particularly focusing on the fusion of hydrogen nuclei. Participants explore the relationship between particle physics and fusion, the necessary background knowledge for studying fusion, and the practical challenges associated with fusion energy.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant seeks information on fusion, specifically equations and solutions related to the fusion of hydrogen nuclei, indicating a beginner's level of understanding.
  • Another participant mentions using Freidberg's Plasma Physics and Fusion Energy as a resource for studying fusion, suggesting a focus on plasma physics rather than particle physics.
  • A participant notes that fusion is primarily studied by plasma physicists, not particle physicists, indicating a distinction in focus areas within physics.
  • Concerns are raised about the lack of a formal physics background for studying fusion, with suggestions to study quantum mechanics and electromagnetism first, although plasma physics is emphasized as more relevant.
  • One participant highlights that the fusion process occurs at energies (25-200 keV) that are below the GeV/TeV range typical in particle physics, advocating for texts in plasma physics and fusion engineering instead.
  • Another participant agrees that understanding plasma physics is crucial and elaborates on the impracticality of proton-proton fusion for energy generation on Earth due to low reaction probabilities and the conditions required for successful fusion.
  • Discussion includes the higher energy output of deuterium-tritium (D-T) fusion compared to proton-proton fusion, with specific energy values mentioned for the products of the D-T reaction.

Areas of Agreement / Disagreement

Participants generally agree that plasma physics is more relevant for studying fusion than particle physics, but there is no consensus on the best foundational subjects to study before delving into fusion. Multiple views on the relationship between particle physics and fusion remain present.

Contextual Notes

Participants express varying levels of background knowledge and suggest different foundational topics for studying fusion, indicating a lack of clarity on the prerequisites for understanding fusion in the context of particle physics.

Deepak247
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I'm trying to find fusion (let's say of 2 hydrogen nucleus) in particle physics,

I've just started with my self study of Particle physics book, any info in regards to fusion (Any Equation, solution) would be very helpfull..



THANKS.....
 
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My study uses Freidberg's Plasma physics and fusion energy for it's courses on fusion.
 
Actually I was looking for topics in particle physics that may help me study fusion...
 
Fusion is a topic mostly studied by plasma physicists and not by particle physicists
 
I'm trying to study fusion in detail but don't have a bachelors in physics background...
Someone told me to study quantum mechanics first then particle physics but Plasma physics is more suitable than particle physics for fusion...

Can someone guide me as to how to carry on my study...am i right until now?
 
I think it would be a better idea to study electromagnetism first
 
Deepak247 said:
I'm trying to find fusion (let's say of 2 hydrogen nucleus) in particle physics,

I've just started with my self study of Particle physics book, any info in regards to fusion (Any Equation, solution) would be very helpfull..

THANKS.....
The fusion process happens at energies (25-200 keV), which is well below the GeV/TeV range of interest in particle physics. It is best to look at texts in plasma physics and fusion engineering. Proton-proton fusion which is found in stars is impractial for fusion as a energy source on earth, because the reaction has such a lower probability (cross-section), particuarly at the lower densities and pressures achieveable by man-made instruments. The sun uses it so well because the sun can sustain high pressures and densities, and it is so big (~330,000 Earth masses).

The challenge for fusion is in the engineering (applied physics).
 
I agree, I am a plasma scientist and you'd be much better learning the basics there then trying to grapple with quantum mechanics. Also Proton-proton fusion is impractical because the spin-spin interaction causing Helium 2 to be an unstable particle as well as the fact that D-T is so much higher energy output having an alpha particle with 3.5 MeV + a neutron with 14.1 MeV after reaction.
 

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