Observation of the fastest chemical processes in the radiolysis of water - Archive ouverte HAL
Article Dans Une Revue Science Année : 2020

Observation of the fastest chemical processes in the radiolysis of water

Z.-H. Loh
G. Doumy
C. Arnold
L. Kjellsson
S. Southworth
A. Al Haddad
  • Fonction : Auteur
Y. Kumagai
M.-F. Tu
P. Ho
  • Fonction : Auteur
A. March
R. Schaller
M. Bin Mohd Yusof
T. Debnath
Marc Simon
Laboratoire de Chimie Physique - Matière et Rayonnement
R. Welsch
L. Inhester
K. Khalili
K. Nanda
A. Krylov
S. Moeller
  • Fonction : Auteur
G. Coslovich
J. Koralek
M. Minitti
W. Schlotter
J.-E. Rubensson
R. Santra
L. Young

Résumé

The “hole” story of water ionization The direct observation of the cationic hole H 2 O + that is formed in liquid water after ionization has been a long-standing experimental challenge. Previous attempts using optical and ultraviolet techniques have failed to reveal its key spectroscopic signature during ultrafast transformation into a OH radical. Loh et al. address this gap by using intense, ultrafast x-ray pulses from an x-ray free electron laser at ∼530 electron volts. They found compelling evidence for the formation H 2 O + and its decay to an OH radical by a proton transfer mechanism and elucidated the other fastest–time scale steps in the early-time dynamics of ionized liquid water. Science , this issue p. 179

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Chimie

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https://hal.science/hal-03964923

Soumis le : mardi 31 janvier 2023-10:46:12

Dernière modification le : jeudi 11 avril 2024-13:08:15

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hal-03964923 , version 1 (31-01-2023)

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Citer

Z.-H. Loh, G. Doumy, C. Arnold, L. Kjellsson, S. Southworth, et al.. Observation of the fastest chemical processes in the radiolysis of water. Science, 2020, 367 (6474), pp.179-182. ⟨10.1126/science.aaz4740⟩. ⟨hal-03964923⟩

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