Abstract
Abstract Using infra-red absorption topographic spectroscopy the aggregation of nitrogen in synthetic diamonds grown with a nickel catalyst was investigated. It was found: (a) that the rate of aggregation is a function of the nickel concentration, showing conclusively that the presence of nickel is responsible the enhancement of the nitrogen aggregation in diamond: and (b) that the aggregation process in the specimens containing nickel, does not follow second order kinetics. Two possible mechanisms for the involvement of nickel in the nitrogen aggregation process are presented.
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