Astrophysics (index)

Saha Equation

(Saha Ionization Equation, Saha-Langmuir Equation)
(equation relating ionization to temperature)

The Saha Equation (Saha Ionization Equation or Saha-Langmuir Equation) gives the relative count of ions in a particular Ionization State (in this case, number of "missing" electrons) expected based upon the Temperature and other factors regarding a gas. It is used in stellar models. One form:

Ni+1    Zi+1  2
———— = ———— ———— (2π mekT)3/2ei/kT
 Ni     Zi  neh3

(equation,physics,model) equation

Referenced by:
State of Ionization