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Automatic NAA: Saturation activities
Authors:G. P. Westphal  F. Grass  M. Kuhnert
Affiliation:1. Atominstitut der ?sterreichischen Universit?ten, Stadionallee 2, A-1020, Vienna, Austria
Abstract:A system for Automatic NAA is based on a list of specific saturation activities determined for one irradiation position at a given neutron flux and a single detector geometry. Originally compiled from measurements of standard reference materials, the list may be extended also by the calculation of saturation activities from k 0 and Q 0 factors, and f and a values of the irradiation position. A systematic improvement of the SRM approach is currently being performed by pseudo-cyclic activation analysis, to reduce counting errors. From these measurements, the list of saturation activities is recalculated in an automatic procedure.
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