[Ifeffit] lambda in parameter Ei

[Arkadiusz Onyszko]

Dear All,
I found in manual, that lamda ~ 1/sqrt(Ei)
I want calculate lambda with fitting parameter Ei. How do it ?
What is the exact dependence Ei and lambda ?
During fitting I have example Ei=7,5, so I want calculate lambda.
This dependence: lamda ~ 1/sqrt(Ei) is not a complitly.

Yours faithfully
Arkadisz Onyszko