The tensor properties of 
are reflected in the polarization
dependence of the DAFS signals. The EDAFS polarization dependence is
analogous to that of EXAFS. For single-scattering EXAFS, the polarization
dependence is 
, where 
specifies the direction from the absorbing atom to the back-scattering
neighbor; the analogous dependence for EDAFS is 
. For multi-leg single-scattering
paths, the EXAFS polarization dependence only depends on the two legs
closest to the absorbing atom and is given by 
, where 
and 
specify the directions of the two closest legs; the analogous
dependence for (nonmagnetic) EDAFS is given by 
.
The DANES and XANES polarization dependences are more complicated. The
newest FEFF codes calculate the correct polarization dependence of the
XANES matrix elements starting a little above threshold, and over the
entire EXAFS region. These full FEFF calculations show that the simple
polarization dependence works very well in the EXAFS region. The full
polarization dependent FEFF codes for DANES and EDAFS are currently under
development.