The complex refractive index and dipole-polarizability of iodine, I2, between 11500 and 17800 cm-1

Details The complex refractive index and dipole-polarizability of iodine, I2, between 11500 and 17800 cm-1 The complex refractive index and dipole-polarizability of iodine, I2, between 11500 and 17800 cm-1

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..430..698h&link_type=abstract

The eleventh international conference on fourier transform spectroscopy. AIP Conference Proceedings, Volume 430, pp. 698-701 (1

Computer Science

Optical And Dielectric Properties

Scientific paper

We have measured the complex refractive index of molecular iodine in the gas-phase in the wavenumber range between σ=11500 and 17800 cm-1 with a resolution of approximately 7 cm-1. The low-resolution absorption spectrum compares favorably well with existing spectra from the literature. The wavenumber-dependence of the polarizability α(σ), which is obtained from the refractive index spectrum by means of the Lorenz-Lorentz relation, is recorded for the first time in this wavenumber range and the vibrational energy spacing of the B state of iodine is also resolved in the polarizability spectrum. Fitting the measured polarizability data to a two-term Kramers-Heisenberg dispersion relation yields a static value of α(0)=10.33(28)×10-30 m3.

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