A high pressure cell for dynamic light scattering up to 2 kbars with conservation of plane of polarization

We report on a high pressure cell with six optical windows which can be used up to 2 kbars for laser light scattering applications at scattering angles of 45°, 90°, and 135° of liquid samples in a temperature range between − 20 and 150 ° C . The pressure transmitting medium is compressed nitrogen. T...

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Bibliographic Details
Published in:Review of scientific instruments 2008-01, Vol.79 (1), p.013102-013102-5
Main Authors: Meier, G., Kriegs, H.
Format: Article
Language:English
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Summary:We report on a high pressure cell with six optical windows which can be used up to 2 kbars for laser light scattering applications at scattering angles of 45°, 90°, and 135° of liquid samples in a temperature range between − 20 and 150 ° C . The pressure transmitting medium is compressed nitrogen. The window material used is SF57 NSK, a glass with an extremely low stress optical coefficient in the order of about 10 − 5 which allows thus to maintain the plane of polarization even under the action of high pressure. In order to demonstrate the functioning of the cell we show Rayleigh-Brillouin spectra of poly(methylphenylsiloxane) at different polarizations and pressures.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2827137