The mobility of H and D was measured at 30C by using a resistance method. The effective charges which were calculated by using reported diffusion coefficients were positive and were slightly greater for D, than for H (table 96).

Electromigration of Hydrogen and Deuterium in Vanadium and Niobium by a Resistance Method. D.T.Peterson, C.L.Jensen: Metallurgical Transactions A, 1978, 9[11], 1673-7

 

Table 96

Transport Properties of H and D in Nb

 

Isotope

m (cm2/Vs)

D (cm2/s)

Z*(e)

H

5.7 x 10-4

8.5 x 10-6

1.8

D

2.8 x 10-4

3.7 x 10-6

2.0