Dear Angel L.,
the bible is:
Krivoglaz, M. A. (1969). Theory of X-ray and Thermal Neutron Scattering
by Real Crystals. New York: Plenum.
and for useful formula you can have a look on some of the following
publications (the list is definitely not complet):
Wilkens, M. (1970). Phys. Status Solidi
Dear Angel,
there is a vast number of publications about this, and each one will
give you a different formula.
There is some physics behind the different methods, but it is not a
straightforward procedure.
Most methods rely, however, on the analysis of Fourier coefficients.
Look at Kamminga&Delh
Dear colleages,
Could any of you give the details about the procedure (equations,
methods) to deduce the density of dislocatins from the lattice
microstrains obtained from the Stokes and Wilson or variance or
integral breadth methods.
Thanks in advance.
Sinverely yours,
Angel L.