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Characterization of InxGa1−xAs crystals by 14 MeV neutron activation analysis

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Abstract

Indium doped GaAs crystals are analyzed quantitatively for indium by non-destructive 14 MeV neutron activation analysis. Experimental conditions are optimized to provide a precision of ±5% and a practical sensitivity of 50 ppm, by weight. The accuracy of the neutron activation method is established by comparison with the results obtained by atomic absorption and Rutherford back-scattering techniques. The method has been applied for determining the homogeneity of indium distribution of wafers by sectional analysis and is demonstrated as a reference method for calibrating the low temperature photoluminescence technique.

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Yegnasubramanian, S., Swaminathan, V. & Caruso, R. Characterization of InxGa1−xAs crystals by 14 MeV neutron activation analysis. Journal of Radioanalytical and Nuclear Chemistry, Articles 111, 123–128 (1987). https://doi.org/10.1007/BF02060528

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  • DOI: https://doi.org/10.1007/BF02060528

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