Schematic view of the experimental configuration used to obtain time-resolved Raman measurements in multiply shocked liquid benzene.
Representative Raman spectra (Experiment 5) from multiply shocked liquid benzene after subtracting the background: ambient conditions (bottom) and peak pressure of 17.1 GPa (top).
Comparison of calculated temperatures from the original EOS (Ref. 18 ) with measured temperatures. Pressures and temperatures shown are for multiply shocked liquid benzene in the peak state.
Calculated isotherms and P-V isothermal data (Refs. 29–31 ) (open circles). The isotherms were calculated numerically from the volume derivative of the Mie-Gruneisen P-V equation of state (Ref. 23 ), published Hugoniot data, and the following values for (dP/dT)v: 1.25 × 10−3 GPa/K and 2.25 × 10−3 GPa/K (using the original specific heat function), and 1.28 × 10−3 GPa/K (using the new specific heat function).
Calculated temperatures from the original EOS (Ref. 18 ) and the improved EOS are shown along with the measured values. The solid triangles, incorporating changes to the (dP/dT)v, show slightly higher temperatures. Pressures and temperatures shown are for multiply shocked liquid benzene in the peak state.
Calculated pressure histories for multiply shocked liquid benzene using the original EOS (Ref. 18 ) and the improved EOS (present). Time is relative to the moment of impact. As expected, the pressure histories are unchanged.
Calculated temperatures along the unreacted benzene Hugoniot curve. The dashed line represents the Hugoniot temperatures calculated with the original benzene EOS (Ref. 18 ), the solid line represents the Hugoniot temperatures calculated with the improved EOS, and the dotted-dashed line represents the extension of the calculated Hugoniot temperatures to pressures beyond the decomposition threshold. The dotted line and the solid diamond represent the Hugoniot temperatures calculated by Nellis et al. (Ref. 1 ) and Dick (Ref. 3 ), respectively.
Experimental results and calculated temperatures.
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