ABSTRACT
In transmission, every scattered neutron contributes to the signal, because it leaves the direct beam into the full solid angle (cf. Figure 11.1). Thus, Bragg-edges can be seen faster in the time-of-flight spectrum than conventional diffraction peaks, for which a specimen is seen under the solid angle of the detector only. Combined with the availability of high intensity pulsed sources (LANSCE, ISIS), this opens the possibility of doing both transient and stroboscopic measurements. The method is relevant to different research areas, like the dynamics of phase transformations, dynamic stress influences at impact, or materials under extreme external conditions. Residual stress states in materials develop as a very complicated, while highly coupled, thermal/metallurgical/mechanical process during welding, casting or forging or as a result of other manufacturing processes: Bragg-edge analysis can contribute to the understanding of these processes and their interrelation.
