Anomalous behavior of nonlinear refractive indexes of CO2 and Xe in supercritical states
| Autor: | Vyacheslav M Gordienko, Victor N. Bagratashvili, Fedor Potemkin, E. I. Mareev, Nikita V. Minaev, Victor A. Aleshkevich |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
business.industry 02 engineering and technology 021001 nanoscience & nanotechnology Ridge (differential geometry) 01 natural sciences Atomic and Molecular Physics and Optics Supercritical fluid law.invention Nonlinear system Optics Pressure measurement law 0103 physical sciences Maximum density Atomic physics 010306 general physics 0210 nano-technology Spectroscopy business Refractive index Line (formation) |
| Zdroj: | Optics Express. 26:13229 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.26.013229 |
| Popis: | Direct measurement of pressure dependent nonlinear refractive index of CO2 and Xe in subcritical and supercritical states are reported. In the vicinity of the ridge (or the Widom line), corresponding to the maximum density fluctuations, the nonlinear refractive index reaches a maximum value (up to 4.8*10-20m2/W in CO2 and 3.5*10-20m2/W in Xe). Anomalous behavior of the nonlinear refractive index in the vicinity of a ridge is caused by the cluster formation. That corresponds to the results of our theoretical assumption based on the modified Langevin theory. |
| Databáze: | OpenAIRE |
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