Diffusivity of Hydrogen in Tantalum between 15 and 30 K

Abstract

The diffusivity of hydrogen in tantalum was measured by means of the perturbed-angular-correlation technique. The method makes use of the radioactive decay of $^{181}\mathrm{Hf}$ to $^{181}\mathrm{Ta}$ and the possibility of the trapping of hydrogen at an impurity and the release of it after the nuclear conversion.