Measurement of the Index of Refraction of Solids by UV-Vis Spectroscopy

• Gregory J. Exharos ^[1] ; Brian J. Bozlee ^[2] ; Aida E. Jimenez ^[3] ; Simone L. van Swam ^[4]
  1. [1] Pacific Northwest National Laboratory

     Pacific Northwest National Laboratory

     Estados Unidos

     
  2. [2] Hawaii Pacific University

     Hawaii Pacific University

     Estados Unidos

     
  3. [3] University of Great Falls

     University of Great Falls

     Estados Unidos

     
  4. [4] Northwestern University

     Northwestern University

     Township of Evanston, Estados Unidos

     

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• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 79, Nº 5, 2002, pág. 619
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this laboratory exercise, the dispersion curve of CaF2 (i.e., refractive index as a function of wavelength) was determined by temperature-dependent UV-vis spectroscopy of solid CaF2 powder intercalated by liquid hexadecane. The relative error between the literature and the experimental values for the index of refraction of CaF2 was about 1‰ at most visible wavelengths. This exercise introduces students to a novel spectroscopic method for refractive index measurement and illustrates the variation in refractive index of a typical solid over the visible wavelength region.