Figure 2
Sketch of the experimental set-up: the hard X-rays coming from an insertion device of the light source BESSY-II (right; Görner et al., 2001; Rack et al., 2008) are transmitted to the sample under load (photograph with zoom inset and sketch); the attenuated beam is converted into visible light by a scintillator screen. This luminescence image is captured via visible-light optics and a digital camera (Hartmann et al., 1975). Only a small part of the specimen can be imaged owing to the detector's limited field of view (cf. Fig. 3). |