Boltzmann equation - Why does theta = 5040/T

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Hi,

I am working on a Boltzmann equation question and I know that the solution I am looking for is that:

log(nij/nji)=log(gij/gji)-Eij(eV)(5040/T)

The only thing I don't understand is why log(e-Eij/kt) = θ = 5040/T

From what I have read in textbooks, it is just a given, but I really want to know why!

Any help gratefully received!

Thank you
 
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log(e-Eij /kT ) = Eij* θ where θ = log(e) / (kT) = 5040 / T when Eij is in eV
 
Thank you for the reply. It was the log(e) that was confusing me, all sorted now!
 

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