On 5 Sep 01, at 15:35, stefano agrestini wrote:
> Thank you very much Miguel,
> But it doesn't help, because my samples are ionic and the boron has
> -1 or -2 ionic state, while in the atmdata.dat file for GSAS there
> are only x-ray scattering factors values for B.
>
> Dr. Stefano Agrestini
>
> "La Sapienza" University of Rome
> Physics Department
>
probably difficult to get an explicit entry for B(1-) or B(2-) scatt
factors, although the optical constants db or Mox (where should I
begin to search the references?) may have it. You may alternatively
get around using C for B(1-) and fiddling a bit with the Debye-waller
factor, should go positive.
regards
Miguel
Miguel Gregorkiewitz
Dip Scienze Terra, Università
via Laterina 8, I-53100 Siena, Europe
fon +39'0577'233810 fax 233938
e-mail [EMAIL PROTECTED]
