Far Infrared Studies at High Pressures with the Diamond Anvil Cell

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Abstract:

The diamond anvil cell (DAC) is very convenient for visible-ultraviolet spectroscopic investigations. It has also been employed for Raman spectroscopy, but fluorescence from the diamond windows imposes severe restrictions. When the DAC is used in the infrared region, the low signal/noise ratio of conventional dispersive infrared spectrometers makes it necessary to condense the beam. Most infrared spectra recorded with a 4× or a 6× beam condenser and the DACs in dispersive instruments are of inferior quality, with low resolution and high noise levels. This is due to the small optical aperture of the DAC (typical 0.15 mm when gaskets are used).

Keywords: Conformational changes; Diamond cell; Far infrared techniques; High pressure; trans-1,4-Dihalocyclohexanes

Document Type: Short Communication

DOI: http://dx.doi.org/10.1366/000370278774330775

Affiliations: Department of Chemistry, University of Oslo, Blindern, Oslo 3, Norway

Publication date: November 1, 1978

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