multiples and submultiples thereof] form a geometric sequence with ratio loll6. Similarly, ladders with g values of loll3, 101i4, erc. are readily constructed. Frustratingly, however, the preferred values do deviate significantly from being a perfect geometric sequence. Thus, to two significant figures, 1.0, 1.5, 2.2, 3.2, 4.6, 6.8, and 10 are the numbers which form a sequence with ratio
ACKNOWLEDGMENTIt is a pleasure to acknowledge the experimental assistance of Marten G~~~~~~~ and the financial assistance of the N~-tional Research council of Canada.The possibility of analyzing the macroconstituents of a matrix by using neutron activation without utilizing any standards has been studied, provided all major constituents can be activated and detected. Equations have been derived that directly relate the concentration of each of the constituents to the ratio variations of the accumulated counts due to the activation of these elements present. The general theory has been successfully applied to the determination of gold alloy constituents. A relative standard deviation of 0.92, 3.3, and 0.91% has been obtained for gold, silver, and copper determinations, respectively. Average deviation of the results obtained by this method and atomic absorption was 0.58%.
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