Abstract

We have made a first determination of the diffusion coefficient D of Al in diopside, via a nuclear microanalysis technique: proton energy scanning using the 992 keV resonance of 27Al(p, γ) 28Si. We find D = (0.32 ± 0.07) × 10 −16 cm 2/s at T = 1180°C, which is the mean value of two experiments.

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