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Can you please add a reference for the formulas you added to Thomas-Fermi screening? Also, I don't understand "for any power p" -- can I just pick whatever number I want? Is p=500000 OK? Thanks in advance!! --Steve (talk) 18:06, 30 July 2017 (UTC)
The formulas are all pretty standard, just follow from expressing chemical potential in terms of Fermi-Dirac integrals and working things out. The Wikipedia page on F-D integrals has definitions, and links to numerical routines for evaluating them and their inverses. I added a plot to illustrate things, and show that p=1.8 is a pretty good value. Of course, it's strictly true that the expression gives the right limits for *any* p, though p's that are far enough from 1.8 are pretty bad at intermediate values.--Dstrozzi (talk) 19:40, 30 July 2017 (UTC)