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PURE FUNCTION df2(x)

Defined in

contrib/astro/physics/cool/cool.f90

Inputs

• x ( = 13.6/kT)

Description

• analytic approximation to the f2 integral for ionization rates of Arnaud & Rothenflug(1985A&AS..60..425A)
• I'm not sure where this approximation comes from
• f2 = exp(x) * [integral(1 → inf) of (exp^-tx*ln(t)/t)dt]

Called in

contrib/astro/physics/cool/cool.f90, in FUNCTION H_ioniz.

contrib/astro/physics/cool/cool.f90, in FUNCTION He_ioniz.

Functions Used

None

Modules Used

None