Abstract
The usefulness of a small low-energy photon Ge(Li) detector for instrumental neutron activation analysis of silicate rocks was investigated. In order to avoid systematic errors caused by self-absorption of low-energy photons and by the counting geometry, a sample pelletizing technique is proposed. The spectral interferences in spectra taken with the small Ge(Li) detector and with a large one were compared and a definite advantage for a small detector was found for the determination of Ce, Nd, Sm, Eu, Gd, Tb, Dy, Tm, Yb, Lu, Ta and U.
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