Hybrid HE11 mode of corrugated waveguides as source of axion

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SUMMARY

The discussion centers on the limitations of using the HE11 mode of corrugated waveguides as a natural source for axion fields. The source term for axions is determined by the interaction of electric and magnetic fields, represented by the equation ##\mathbf{E}\cdot \mathbf{B}##, which is significantly suppressed by the ratio of wavelength to waveguide radius (##\lambda/a##). A reference to waveguides in ITER indicates a ratio of approximately ##1/20##, suggesting that while suppression exists, it may not be excessively detrimental. The original Sikivie paper provides foundational equations that can be modified to estimate axion production in this context.

PREREQUISITES
  • Understanding of electromagnetic field interactions, specifically ##\mathbf{E}\cdot \mathbf{B}##
  • Familiarity with waveguide theory and design, particularly corrugated waveguides
  • Knowledge of axion physics and its theoretical implications
  • Ability to interpret and modify mathematical equations from scientific literature
NEXT STEPS
  • Review the original Sikivie paper for foundational equations on axion production
  • Investigate the properties of corrugated waveguides in high-energy physics applications
  • Explore the implications of the ##\lambda/a## ratio in different waveguide designs
  • Study the role of axions in theoretical physics and their potential detection methods
USEFUL FOR

Physicists, researchers in high-energy physics, and anyone interested in the theoretical aspects of axion production and waveguide technology.

Ricvil
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Why HE11 mode of corrugated waveguides would not be a natural source of axion field?
 
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Ricvil said:
Why HE11 mode of corrugated waveguides would not be a natural source of axion field?

The source term for the axion is proportional to ##\mathbf{E}\cdot \mathbf{B}##. This quantity is suppressed by a factor of ##\lambda/a##, where ##\lambda## is the wavelength and ##a## is the radius of the waveguide. Looking around I found a paper suggesting that some of the waveguides involved in ITER have ##\lambda/a \sim 1/20##, so perhaps this isn't a huge suppression.

The original Sikivie paper is available at http://ccdb5fs.kek.jp/cgi-bin/img/allpdf?198309239 . Perhaps you can modify his eqs (6,7) in order to estimate the axion production in this situation.
 
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