Optical hystefwsis in oleic acid and castor oil under pressure

Autor:	W. Ejchart, J. Jedrzejewski, R. M. Siegoczyński, R. Wiśniewski
Rok vydání:	1994
Předmět:	Materials science Scattering business.industry Analytical chemistry Condensed Matter Physics Light scattering Hysteresis Oleic acid chemistry.chemical_compound Optics chemistry Castor oil medicine Incident beam Scattered light business medicine.drug
Zdroj:	High Pressure Research. 13:93-97
ISSN:	1477-2299 0895-7959
DOI:	10.1080/08957959408200267
Popis:	Liquid oleic acid and castor oil (at temperature T = 20°C) exhibit a strong scattering in the case when pressures above 0.21 and 0.36 GPa are applied, respectively. The transmitted and scattered light have been viewed at an angle θ = 0° and at an angle θ = 90° respectively to direction of propagation of the incident beam of light at pressures up to 0.9 GPa. Measurements of the intensities of the transmitted and scattered light as a function of increasing and decreasing pressure show phenomenon of the optical hysteresis. The analyses of all hysteresis curves in the case of the slow application of pressure show that returning of oleic acid and castor oil to the original state takes place through the new state which gives further information about the nature of the observed high-pressure states.
Databáze:	OpenAIRE
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