[phenixbb] scattering factors

Ralf Grosse-Kunstleve rwgrosse-kunstleve at lbl.gov
Mon Jun 20 12:45:30 PDT 2011

Hi George,

> I have a question though. Because electron scattering depends on the
> velocity of the electron which in turn depends on the acceleration voltage
> of the microscope. The gaussian parameters need to be corrected using the
> relativistic electron velocity by multiplying the ai parameters with m/m0 =
> (1 – v2/c2) ^-1/2 where v is the relativistic electron velocity and c is the
> velocity of light (for example m/m0 = 1.58707 for a 300keV electron
> microscope).

Is the factor m/m0 different for each atom type?


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