Electric fields in liquid water irradiated with protons at ultrahigh dose rates
Langue
en
Article de revue
Ce document a été publié dans
Physical Review Letters. 2023-10, vol. 131, n° 17, p. 178001
American Physical Society
Résumé en anglais
We study the effects of irradiating water with 3 MeV protons at high doses by observing the motion of charged polystyrene beads outside the proton beam. By single-particle tracking, we measure a radial velocity of the order ...Lire la suite >
We study the effects of irradiating water with 3 MeV protons at high doses by observing the motion of charged polystyrene beads outside the proton beam. By single-particle tracking, we measure a radial velocity of the order of microns per second. Combining electrokinetic theory with simulations of the beamgenerated reaction products and their outward diffusion, we find that the bead motion is due to electrophoresis in the electric field induced by the mobility contrast of cations and anions. This work sheds light on the perturbation of biological systems by high-dose radiations and paves the way for the manipulation of colloid or macromolecular dispersions by radiation-induced diffusiophoresis.< Réduire
Mots clés en anglais
Diffusiophoresis
Electrophoresis
Chemical reactions
Irradiation effects
Interdisciplinary physics
Soft matter
Origine
Importé de halUnités de recherche