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Journal Articles

Low-linear energy transfer radiolysis of liquid water at elevated temperatures up to 350$$^{circ}$$C; Monte-Carlo simulations

Sanguanmith, S.*; Muroya, Yusa*; Meesungnoen, J.*; Lin, M.; Katsumura, Yosuke*; Mirsaleh Kohan, L.*; Guzonas, D. A.*; Stuart, C. R.*; Jay-Gerin, J.-P.*

Chemical Physics Letters, 508(4-6), p.224 - 230, 2011/05

 Times Cited Count:42 Percentile:82.12(Chemistry, Physical)

Our Monte-Carlo modeling of the high-temperature radiolysis of water by low-LET radiation was re-examined in an attempt to reconcile our computed $$g$$-values of the various radiolytic products with recently re-assessed experimental data up to 350$$^{circ}$$C. The inclusion in our simulations of the abrupt drop in the rate constant for the self-reaction of hydrated electron above 150$$^{circ}$$C led us to re-evaluate the temperature dependence of certain parameters intervening in the physicochemical stage of the radiolysis. A very good agreement was found between model and experiment. The importance of the reaction of H atoms with water in the unexplained yield of H$$_{2}$$ above 200$$^{circ}$$C was also briefly discussed.

Journal Articles

Monte-Carlo simulation of the low-LET radiolysis of liquid water over the range 25 to 350$$^{circ}$$C

Sanguanmith, S.*; Muroya, Yusa*; Meesungnoen, J.*; Lin, M.; Katsumura, Yosuke*; Mirsaleh Kohan, L.*; Guzonas, D. A.*; Stuart, C. R.*; Jay-Gerin, J.-P.*

Proceedings of 5th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-5) (CD-ROM), 13 Pages, 2011/03

A re-examination of our Monte-Carlo modeling of the high-temperature radiolysis of liquid water by low linear energy transfer (LET $$sim$$0.3 keV/$$mu$$m) radiation was undertaken in an attempt to reconcile our computed g-values of the various radiolytic products with newly measured or recently re-assessed experimental data over the range from 25 up to 350$$^{circ}$$C. Using a global-fit procedure, experimental data were found to be best reproduced when a discontinuity in the temperature dependence of certain physicochemical parameters was introduced at $$sim$$100-150$$^{circ}$$C. The presence of such a discontinuity was hypothesized to be associated with a change in the liquid structure of water around these temperatures. In addition to the physicochemical factors intervening in the radiolysis, the importance of the reaction of H atoms with water in contributing to the unexplained yield of H$$_{2}$$ above 200$$^{circ}$$C was also investigated.

Journal Articles

Acceleration of 100mA of H$$^{-}$$ in a single channel electrostatic quadrupole accelerator

J.W.Kwan*; G.D.Ackerman*; C.F.Chan*; W.S.Cooper*; G.J.de-Vries*; W.F.Steele*; Stuart, M. E.*; M.C.Vella*; Wells, R. P.*; Inoue, Takashi; et al.

Review of Scientific Instruments, 66(7), p.3864 - 3868, 1995/07

 Times Cited Count:8 Percentile:59.62(Instruments & Instrumentation)

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