[Wien] Hyperfine field

[Lyudmila Dobysheva]

>  Azuma, Hideto wrote:
>  >:HFF = (8pi/3) x 'bohr magneton' x 'spin density at 1st radial point
>  >(:RTO)' ---(a).    (am i right?)
A little addition to the comprehensive letter of Martin Pieper:
WIEN package calculates HFF not at 1st radial point, but from integral over 
the Thomson sphere, which you can see in the program mixer.f and its 
subroutine hyper.f 
This is a formula for relativistic case as you will find in the paper of 
S.Blugel.

Best wishes
Lyudmila Dobysheva
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