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Hydrogen-only Saha equation

Codex (@codex,  0) ... Physics Branch of physics Cosmology Cosmological recombination Free-electron fraction during hydrogen--helium recombination Coupled hydrogen--helium Saha equations
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
When Yp​=0, F=XH+​, and
1−XH+​XH+2​​=nB​1​(h22πme​kB​T​)3/2e−IH​/(kB​T).
(1)

 Ancestors (7)

  1. Coupled hydrogen--helium Saha equations
  2. Free-electron fraction during hydrogen--helium recombination
  3. Cosmological recombination
  4. Cosmology
  5. Branch of physics
  6. Physics
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 Incoming links (4)

  • Hydrogen ionization fraction
  • Past exam of the mathematics course of the University of Cambridge / 2004 / iii / Paper 56 / 2 / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2013 / iii / Paper 48 / 2 / a / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2025 / ii / Paper 3 / 14E / b / iii / Solution

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