INSTRUMENTAL ACTIVATION ANALYSIS OF SILICATE ROCKS WITH EPITHERMAL NEUTRONS

The determination of some trace elements in standard rocks by epithermal neutron activation, followed by γ-ray spectrometry with a Ge(Li) detector, is described. The advantage of using this technique compared to corresponding analysis with thermal neutrons is clearly demonstrated in the case of Rb, Cs, Sr, Sb, Ta, and U. Determinations of Ba, Sm, Tb, Hf, and Th also appear to be favourable. © 1969.