FIELD: measuring equipment.
SUBSTANCE: method is proposed for determination of the refractive index of an optically transparent material by measuring ellipsometric parameters Δ and ψ their subsequent calculating. In this case, the previously compacted nano- or ultrafine powder is placed in air medium and ellipsometric parameters are determined Δ and ψ in the open air. Then the refraction index of the compacted test material in air (n1) is calculated, after which the compacted test material is placed in an optically transparent immersion liquid that ensures the absence of chemical interaction and good wettability of the test material, and ellipsometric parameters are defined Δ and ψ in the immersion liquid. Then the refraction index of the compacted test material in the immersion liquid is calculated (n2). Then the refraction index of the reference nano- or ultrafine powder is calculated.
EFFECT: ability to determine the refraction index of substances, which are initially in a highly dispersed powder state.
1 dwg
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