Figure 3
Scan through the elastic peak from nuclear resonant absorption in Dy2O3 at room temperature. This gives an upper bound on the resolution, and, in this case (where the sample is not expected to have significant quasi-elastic excitations), should faithfully represent the monochromator resolution, up to a relatively flat background due to absorption with simultaneous creation/annihilation of phonons. See also Fig. 4(a). The solid line is the calculation according to the dynamical theory of diffraction.1 |