Abstract
Nanosecond time-resolved laser-induced fluorescence spectroscopy was performed on rhodamine 6G (R6G) solution in ethanol under laser-driven shock compression under pressures of up to 3.5 GPa. Although under static compression the fluorescence peak shift changed from a redshift to a blueshift at 1.6 GPa, the fluorescence peak underwent a redshift under shock wave loading under pressures of up to 3.5 GPa. The effect of the quadric term on the pressure dependence of the peak shift was observed without the occurrencce of a photoreaction under high pressure. The quadric term was determined using the pressure distribution of laser-induced shock wave profiles.
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