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Optical absorption spectra of liquid sulphur over a wide absorption range

1994; IOP Publishing; Volume: 6; Issue: 28 Linguagem: Inglês

10.1088/0953-8984/6/28/005

1361-648X

Shinya Hosokawa, T Matsuoka, Kouichi Tamura,

Glass properties and applications

The optical absorption coefficient alpha of liquid sulphur has been measured in a wide absorption range from 5.5*10-2 to 2*105 cm-1 at temperatures from 130 to 450 degrees C. For measurement in the high-absorption range beyond 105 cm-1, we have developed an optical cell of our own design with a sample thickness of about 3000 AA. It was found that the absorption spectra are substantially changed at the polymerization temperature, especially in the high-absorption region; a new absorption band appears at around 3.25 eV and increases with increasing temperature. We discuss the origin of this new absorption band in the high-absorption region together with the details of the spectral changes in the intermediate and low-absorption regions.