Refractive Indices of Hexagonal Ice
Abstract
The refractive indices of hexagonal ice (Ih) are studied in the wavelength range down to 2537 A, and the wavelength dispersion curves are obtained. From the curves the energy of the representative oscillator is found to be 12.3 eV both for ordinary and extraordinary rays. The temperature dependences of the refractive indices are also studied. It is found that they are mainly due to the thermal dilation of the lattice, and the change in the electronic polarizability is little. This suggests that ice is a molecular crystal in a fairly good approximation.
- Publication:
-
Journal of the Physical Society of Japan
- Pub Date:
- August 1983
- DOI:
- 10.1143/JPSJ.52.2947
- Bibcode:
- 1983JPSJ...52.2947O
- Keywords:
-
- Crystal Optics;
- Hexagonal Cells;
- Ice;
- Oscillator Strengths;
- Refractivity;
- Molecular Absorption;
- Molecular Structure;
- Polarization Characteristics;
- Temperature Dependence;
- Thermal Expansion;
- Ultraviolet Absorption;
- Solid-State Physics