Lattice location studies of deuterium in Pd0.8Au0.2and Ta crystals by ion channeling

Abstract

The channeling of 300–400 KeV deuterons combined with the D(d,p)T reaction has been used to study the lattice location of deuterium in an fcc crystal of (Pd_0.8Au_0.2)D_0.04 and a bcc crystal of TaD_0.10. The channeling angular distributions are measured for 〈100〉, 〈110〉, 〈111〉 axial and {100}, {110}, {111} planar directions. It is concluded that deuterium in Pd_0.8Au_0.2 occupies the octahedral interstice of the fcc lattice, while that in Ta occupies the tetrahedral interstice of the bcc lattice.