Figure 1
A schematic diagram of the experimental setup. The sample is heated from one side by a quartz lamp heater. White-spectrum neutron transmission images are recorded at regular intervals, every ∼4.7 or 6.7 s. The dynamics of Eu concentration are visualized in the sequence of images acquired after the heater temperature is changed to either ∼50 K above or below the melting point for heating and cooling cycles, respectively. |