JOPSS - Search Results

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：81.54(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

https://doi.org/10.1021/jp905199d

Times Cited Count：7 Percentile：22.38(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.

Journal Articles

Temperature effect on the absorption spectrum of the hydrated electron paired with a lithium cation in deuterated water

Lin, M.; Kumagai, Yuta; Lampre, I.*; Coudert, F.*; Muroya, Yusa*; Boutin, A.*; Mostafavi, M.*; Katsumura, Yosuke

Journal of Physical Chemistry A, 111(18), p.3548 - 3553, 2007/05

https://doi.org/10.1021/jp070615j

Times Cited Count：9 Percentile：30.82(Chemistry, Physical)

Journal Articles

Time-dependent radiolytic yields at room temperature and temperature-dependent absorption spectra of the solvated electrons in polyols

Lin, M.; Mostafavi, M.*; Muroya, Yusa*; Lampre, I.*; Katsumura, Yosuke

Nuclear Science and Techniques, 18(1), p.2 - 9, 2007/02

https://doi.org/10.1016/S1001-8042(07)60009-8

Times Cited Count：1 Percentile：14.16(Nuclear Science & Technology)

Oral presentation

Temperature effect on the absorption spectrum of the hydrated electron paired with a metallic cation in deuterated water

Lin, M.; Kumagai, Yuta; Muroya, Yusa*; Katsumura, Yosuke; Lampre, I.*; Coudert, F.*; Boutin, A.*; Mostafavi, M.*

no journal, ,

In this work, we measure the absorption spectra of hydrated electron in D $_{2}$ O solutions containing different concentrations of Li $^{+}$ and Mg $^{2+}$ cations at various temperatures by pulse radiolysis techniques, and perform quantum classical molecular dynamics (QCMD) simulations to explain the shift of the absorption spectra due to the combined effects of temperature and salt concentration.

Oral presentation

Time dependent radiolytic yields of the solvated electrons in diols from picosecond to microsecond

Muroya, Yusa*; Lin, M.; Han, Z.*; Kumagai, Yuta; Lampre, I.*; Mostafavi, M.*; Katsumura, Yosuke

no journal, ,

In this work, we have studied the yield of solvated electron in ethylene glycol, 1,2-propanediol and 1,3-propanediol by electron beam radiation. Their time dependent behaviors in picosecond to microsecond range were also studied by a combination of picosecond and nanosecond pulse radiolysis techniques.

Oral presentation

A Pulse radiolysis study on the temperature dependent absorption spectra of Br $_{2}$ $^{-.}$ and Br $_{3}$ $^{-}$ in aqueous solutions

Lin, M.; Katsumura, Yosuke; Muroya, Yusa*; Fu, H.*; Yan, Y.*; Yamashita, Shinichi; Mostafavi, M.*

no journal, ,

The absorption spectra of Br $_{2}$ $^{-.}$ and Br $_{3}$ $^{-}$ in aqueous solutions are investigated by pulse radiolysis techniques from room temperature to 380 and 350 $^{circ}$ C, respectively. Temperature dependent spectrum of Br $^{-}$ is also measured under steady-sate. If the absorption of Br $^{-}$ is of Charge Transfer To Solvent (CTTS), those of Br $_{2}$ $^{-.}$ and Br $_{3}$ $^{-}$ are not.

Oral presentation

Picosecond pulse radiolysis study on high temperature / supercritical water

Muroya, Yusa*; Lin, M.; Han, Z.*; Yamashita, Shinichi; Ueda, Toru*; Hatano, Yoshihiko; Mostafavi, M.*; Katsumura, Yosuke

no journal, ,

By using a laser-driven S-band linear accelerator and a femtosecond laser, a new highly time-resolved pulse radiolysis system was developed for investigating radiation-induced fast phenomena in high temperature / high pressure water. Transient absorption spectra and fast kinetics of hydrated electron within several nanoseconds at elevated temperatures from room temperature up to supercritical state (400 $^{circ}$ C, 40 MPa) have been measured.

Oral presentation

Picosecond pulse radiolysis study on fast spur reaction kinetics in high temperature water up to supercritical states

Muroya, Yusa*; Lin, M.; Yan, Y.*; Han, Z.*; Yamashita, Shinichi; Ueda, Toru*; Mostafavi, M.*; Katsumura, Yosuke*

no journal, ,

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

First observation of picosecond kinetics of hydrated electrons in supercritical water

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

Temperature effect on the absorption spectrum of the hydrated electron paired with a lithium cation in deuterated water

Time-dependent radiolytic yields at room temperature and temperature-dependent absorption spectra of the solvated electrons in polyols

Temperature effect on the absorption spectrum of the hydrated electron paired with a metallic cation in deuterated water

Time dependent radiolytic yields of the solvated electrons in diols from picosecond to microsecond

A Pulse radiolysis study on the temperature dependent absorption spectra of Br $_{2}$ $^{-.}$ and Br $_{3}$ $^{-}$ in aqueous solutions

Picosecond pulse radiolysis study on high temperature / supercritical water

Picosecond pulse radiolysis study on fast spur reaction kinetics in high temperature water up to supercritical states