Collective oscillation in liquid normal tetradecane and normal heptadecane
Autor: | J. M. Heller, R. D. Birkhoff, L. R. Painter |
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Rok vydání: | 1975 |
Předmět: | |
Zdroj: | The Journal of Chemical Physics. 62:4121-4124 |
ISSN: | 1089-7690 0021-9606 |
DOI: | 10.1063/1.430289 |
Popis: | The optical properties of the liquids normal tetradecane (C14H30) and normal heptadecane (C17H36) were determined for photon energies from 4 to 25 eV. Near normal incidence (15 °) reflectance measurements were analyzed by a Kramers–Kronig method to yield the optical parameters n and k, the refractive index and extinction coefficient, respectively. The dielectric properties and the energy loss function were calculated. Structure from optical data in the liquid state is compared with vapor data for normal paraffin hydrocarbons and with solid data for the 26‐ and 36‐normal paraffins. Evidence of collective excitation of electrons in the n‐alkanes is compared with plasma resonances previously identified in the insulating liquids water, glycerol, tetramethyltetraphenyltrisiloxane (DC‐704), and trimethylpentaphenyltrisiloxane (DC‐705). |
Databáze: | OpenAIRE |
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