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The reflectance of β′-AuZn, β′-CuZn and β′-PdIn (cesium chloride structure) has been measured between 0.5 and 9 eV, and the other optical constants have been calculated by means of the Kramers–Kronig relations. The results can be explained in terms of interband transitions, the most important of which set in at 2.3, 2.4, and 2.3 eV respectively, and of intraband transitions. The possible occurrence of plasma resonances is discussed.
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Jan et al. (1967) studied this question.
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