Borehole Logging With Neutron Activation. A Laboratory Assessment.
Jensen-CM; Overmyer-RF; Rogers-VC; Sandquist-GM
NTIS: PB 273 454 Available for Reference At Bureau Libraries :43 pages
A laboratory assessment of prompt and delayed neutron activation analysis with 252cf and 14 mev neutron sources, for use as an in situ method of determining low-level copper concentration, was performed. A simulated borehole using porphyry ore was constructed and varying copper concentrations were simulated using copper rods. Prompt neutron activation analysis experiments were consistent with earlier work and do not appear feasible for copper concentration of 1.5 pct or less. Delayed neutron activation analysis experiments indicate that copper ore concentrations of less than 0.1 pct are detectable using either the 511-kev gamma ray of copper-64 or the 1,039-kev gamma ray of copper-66, with high resolution detectors as ge (li) or intrinsic germanium.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 273 454 Available for Reference At Bureau Libraries
Ford, Bacon & Davis Utah, Inc