|Message: Physics of ion-interaction models???||Not Logged In (login)|
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I am simulating heavy ions in various targets for the study of the partial fragmentation cross section. For simulation, I am using G4BinaryLightIonReaction (BIC), G4WilsonAbrasion (with Abrasion) (AA) and G4QMDReaction (QMD) model. I have also activated multifragmentation models (G4Evaporation, G4StatMF and G4FermiBreakUp) models. While calculating partial fragmentation cross section, I have got significantly different results from these models (including multifragmentation models). I want to know Physics behind the models. I have also read the physics reference manual but I did come to know what is the actual reason behind getting different results from various models. My questions regarding the models are:
1) In the simulation work, mostly we used more than one data set, such as: G4TripathiCrossSection, G4IonsShenCrossSection, G4IonKoxCrossSection, G4hadronInelasticDataSet and G4IonsSihverCrossSection in the same physics list, then in general on which cross section (dataset (s)), output of simulation will depend? And are these cross section (dataset (s)) capable to calculate partial fragmentation cross sections? and are these cross sections play role in computing dose-distribution by fragments of incident beam?
2) In simulation, I have used BIC, AA and QMD models with multifragmentation models. The output of the simulation is significantly different using various models. I want to know what are the main differences in the physics of the models and how multifragmentation affects the output of the simulation?
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