here you can look them up: http://skuld.bmsc.washington.edu/scatter/AS_periodic.html <http://skuld.bmsc.washington.edu/scatter/AS_periodic.html> (first have to calculate the energy) but I'm afraid that at that wavelength, below the edge, f' and f" are small, so not so likely to give good phase info
9.7 kEV, values of f' = -0.65 and f" = 1.3, if I calculated/looked it up correctly Mark J van Raaij Dpto de Estructura de Macromoleculas Centro Nacional de Biotecnologia - CSIC calle Darwin 3 E-28049 Madrid, Spain Section Editor Acta Crystallographica F https://journals.iucr.org/f/ > On 22 Jan 2021, at 20:36, rohit kumar <rohit...@gmail.com> wrote: > > Hello All, > > I have data collected at Wavelength: 1.2782 (For Sr Heavy atom) with a > resolution of 1.6 A. I was trying to run Crank in ccp4 for SAD phasing and It > asks me to fill the values of (scattering factors) f and f" for the heavy > atom. > Can anyone please help with this, how to calculate or where to find these f > and f" values for Sr heavy atoms? > > Please let me If you need any information from my side. > > Thank you in advance > > > -- > Regards > Dr. Rohit Kumar Singh > Postdoctoral fellow > > > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > <https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1> ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
