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Journal Articles

Ultrafast pulse radiolysis methods

Belloni, J.*; Crowell, R. A.*; Katsumura, Yosuke; Lin, M.; Marignier, J. L.*; Mostafavi, M.*; Muroya, Yusa*; Saeki, Akinori*; Tagawa, Seiichi*; Yoshida, Yoichi*; et al.

Recent Trends in Radiation Chemistry, p.121 - 160, 2010/05

In this review, we summarized development and application of highly time resolved spectroscopy system in order to measure radiation induced fast phenomena together with current status of the systems in the world.

Journal Articles

First observation of picosecond kinetics of hydrated electrons in supercritical water

Muroya, Yusa*; Lin, M.; De Waele, V.*; Hatano, Yoshihiko; Katsumura, Yosuke; Mostafavi, M.*

Journal of Physical Chemistry Letters (Internet), 1(1), p.331 - 335, 2010/01

 Times Cited Count:43 Percentile:81.71(Chemistry, Physical)

For the first time, a set-up is performed to carry out picoseconds time-resolved experiments in Supercritical Water (SCW) by pulse radiolysis. The kinetics of the decay of the hydrated electron is measured by transient absorption in the near IR on a time-scale ranging from 50 ps to 6 ns. The decay of the hydrated electrons in supercritical conditions shows a fast component at a short time below 500 ps, depending on the density of SCW. The results show that in SCW the main reaction for the decay of hydrated electron is that with H$$_{3}$$O$$^{+}$$.

Journal Articles

Pulse radiolysis studies on the temperature-dependent spectrum and the time-dependent yield of solvated electron in Propane-1,2,3-triol

Lin, M.; Fu, H.*; Lampre, I.*; De Waele, V.*; Muroya, Yusa*; Yan, Y.*; Yamashita, Shinichi; Katsumura, Yosuke; Mostafavi, M.*

Journal of Physical Chemistry A, 113(44), p.12193 - 12198, 2009/10

 Times Cited Count:7 Percentile:22.57(Chemistry, Physical)

With a revisit of the absorption coefficient of the solvated electron in propane-1,2,3-triol, the temperature dependent behavior of the absorption spectrum of solvated electron was studied from room temperature to 573 K by pulse radiolysis techniques. The change in the absorption spectrum of solvated electron in propane-1,2,3-triol observed by cooling down from a high temperature to 333 K is compared with that occurring during the electron solvation process at 333 K. The effect of the specific molecular structure of propane-1,2,3-triol compared to other alcohols is discussed.

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