A high-precision serial sectioning technique was used to study the isotope effect for 22Na and 24Na tracers, in single crystals, in the intrinsic range (table 85).

F.Nicolas, F.Bénière, M.Chemla: Journal of the Physics and Chemistry of Solids, 1974, 35[1], 15-23

Table 85

Isotope Effect for 22Na and 24Na in KCl Single Crystals