Density effect on the absorption maximum of solvated electron in sub-and supercritical water and methanol

Yan, Y.*; Katsumura, Yosuke; Lin, M.; Muroya, Yusa*; Yamashita, Shinichi; Hata, Kuniki 

The optical absorption spectra of the solvated electron in sub-and supercritical water and methanol are measured by pulse radiolysis techniques. The results show that, the behaviours in methanol are nearly as similar as those in water. At a fixed pressure, EA decreases monotonically with increasing temperature in passing through the phase transition at T. By contrast, at a fixed density, EA exhibits a minimum as the solvent passes above the critical point into supercritical state.