Figure 17
(a) The cross section through area 1 of Fig. 16(a). The measured transmissions for the sample and for an empty silica glass ampule are shown by dashed curves. The solid curve shows the transmission of the BaBrCl:0.1%Eu sample corrected for the ampule transmission. (b) Cross sections through the reconstructed map of Eu concentration of Fig. 16(b). The Eu concentration cannot be reconstructed accurately at the edges of the sample (shaded areas), where its apparent thickness seen by the neutron beam changes very rapidly (indicated by the dashed curved line). |