On the basis of solubility and resistivity measurements, the mobility of H in Ti at 800C was deduced to be 3.2 x 10-4cm2/Vs; a value which was 1.9 times that for D under the same conditions.
A.Herold, J.F.Mareche, J.C.Rat: Comptes Rendus, 1974, 278[15], 1009-10