Techniques of chemical research with the electron Van de Graaff

A Pratical Approach to the Self-Shielding Problem in Low-Flux Neutron Activation Analysis.

“…cylindrical samples of 1.45-cm. diameter, if 2a ^6 cm.-1 Neutron activation analysis using accelerators as neutron sources has been gaining considerable attention during the past four years (1, 2, 6, 7, 9, 10,12,14,18). Although the first article describing the technique appeared almost eight years ago (4), it is being carried out in only a relatively small number of laboratories on anything approaching a routine basis.…”

“…The one method employs carefully prepared comparators of almost identical composition with the sample. The other method, using an internal standard, was proposed by Leliaert, Hoste, and Eeckhaut in 1958 (18). These authors divided the sample into two aliquots and spiked the one with a known amount of the sought element.…”