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Título: | Quantitative study of cluster growth in free-jet expansions of CO2 by Rayleigh and Raman scattering |
Autor: | Ramos, Ángel CSIC; Tejeda, Guzmán CSIC ORCID; Fernández Sánchez, José María CSIC ORCID ; Montero, Salvador CSIC ORCID | Palabras clave: | Supersonic expansion Molecular clusters Raman spectroscopy Rayleigh scattering Cluster size distribution |
Fecha de publicación: | 9-nov-2005 | Editor: | American Physical Society | Citación: | Physical Review A 72, 053204 (2005) | Resumen: | The condensation produced in supersonic expansions of CO2 is studied quantitatively combining Rayleigh and Raman scattering. The cluster number density nc and the mean cluster size <N> are obtained for five expansions with stagnation pressures P0=1-5 bars, and temperature T0=294 K, along axial and radial directions; nc and <N> are determined from the condensation onset up to a terminal size, verifying the empirical law <N>prop.P0^(2.23). A maximum growth rate d<N>/dt approx.8x10(8) s^(-1) is estimated for the 5-bar expansion. The Raman spectra show a coexistence of solid and liquidlike phases in the jet, with a progressive transition from the liquid to the solid fraction as the clusters increase their size. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevA.72.053204 | URI: | http://hdl.handle.net/10261/2891 | DOI: | 10.1103/PhysRevA.72.053204 | ISSN: | 1050-2947 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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Fichero | Descripción | Tamaño | Formato | |
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manuscript2005pra.pdf | 486,39 kB | Adobe PDF | Visualizar/Abrir | |
tablas2005pra.pdf | 105,56 kB | Adobe PDF | Visualizar/Abrir |
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