Geant4-DNA simulation of the pre-chemical stage of water radiolysis and its impact on initial radiochemical yields - Centre d'Etudes Nucléaires de Bordeaux Gradignan Accéder directement au contenu
Article Dans Une Revue Physica Medica Année : 2021

Geant4-DNA simulation of the pre-chemical stage of water radiolysis and its impact on initial radiochemical yields

Résumé

This paper demonstrates the impact of the pre-chemical stage, especially the dissociation scheme and the associated probabilities, on water radiolysis simulation using the Geant4-DNA Monte Carlo track structure simulation toolkit. The models and parameters provided by TRACs have been collected and implemented into Geant4-DNA. In order to evaluate their influence on water radiolysis simulation, the radiochemical yields (G-values) are evaluated as a function of time and LET using the "chem6" Geant4-DNA example, and they are compared with published experimental and calculated data. The new pre-chemical models lead to a better agreement with literature data than the default pre-chemical models of Geant4-DNA, especially for • OH radicals and H 2 O 2. The revised chemistry constructor "G4EmDNAChemistry_option3" is available in Geant4-DNA version 10.7.
Fichier principal
Vignette du fichier
hal-03273596.pdf (1.3 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03273596 , version 1 (02-07-2021)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Wook-Geun Shin, Jose Ramos-Mendez, Ngoc Hoang Tran, Shogo Okada, Yann Perrot, et al.. Geant4-DNA simulation of the pre-chemical stage of water radiolysis and its impact on initial radiochemical yields. Physica Medica, 2021, 88, pp.86 - 90. ⟨10.1016/j.ejmp.2021.05.029⟩. ⟨hal-03273596⟩
97 Consultations
216 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More