Deuteron diffusion in acceptor-doped ceramics was studied as a function of the Ni content by using a thermal desorption technique. The results, for 850 to 1150K, could be described by:

0mol%Ni:     D(cm2/s) = 1.55 x 102 exp[-147(kJ/mol)/RT]

0.1mol%Ni:     D(cm2/s) = 2.90 x 102 exp[-151(kJ/mol)/RT]

0.3mol%Ni:     D(cm2/s) = 4.90 x 102 exp[-155(kJ/mol)/RT]

1mol%Ni:     D(cm2/s) = 8.4 x 101 exp[-142(kJ/mol)/RT]

R.Waser: Berichte der Bunsengesellschaft für Physikalische Chemie, 1986, 90[12], 1223-30