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Borehole Logging With Neutron Activation. A Laboratory Assessment.

Authors
Jensen-CM; Overmyer-RF; Rogers-VC; Sandquist-GM
Source
NTIS: PB 273 454 Available for Reference At Bureau Libraries :43 pages
Link
NIOSHTIC No.
10008304
Abstract
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.
Publication Date
19770101
Document Type
CP; Final Contract Report;
Fiscal Year
1977
NTIS Accession No.
PB-273454
NTIS Price
A04
Identifying No.
OFR 147-77
NIOSH Division
DRC;
Source Name
NTIS: PB 273 454 Available for Reference At Bureau Libraries
State
UT;
Performing Organization
Ford, Bacon & Davis Utah, Inc
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