E. Findeisen et al., X-RAY GRAZING-INCIDENCE DIFFRACTION FROM POLYCRYSTALLINE SB FILMS ON SINGLE-CRYSTAL SUBSTRATES, Journal of physics. Condensed matter, 5(44), 1993, pp. 8149-8158
The intensity of Bragg reflections depends strongly on the angle of in
cidence, if a highly collimated beam of x-rays is impinging at grazing
incidence on a thin (200-600 Angstrom) polycrystalline antimony layer
. In the case of asymmetric grazing incidence diffraction (AGID) the a
ngle of incidence is small, as the exit angle must be large and nearly
twice the Bragg angle. The experimental data are analysed on the basi
s of the distorted wave born approximation (DWBA), which yields the th
ickness d and the optical constants delta and beta of the layer. These
parameters are compared with those determined from total external ref
lection data.