Astrophysics (index)

Escape Fraction

(fraction of ionizing photons escaping a body)

The term Escape Fraction is used for the faction of photons capable of ionizing atoms that escape from a source that generates them, e.g., stars. A Galaxy has an escape fraction of such photons which reach the surrounding Hydrogen (H) clouds and ionize the hydrogen.


(galaxies)
http://web.stanford.edu/~kistler/home/Escape_of_Photons.html

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