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The perspective of the creation of the new code for the simulation of the radiation damage and gas production in structural materials irradiated by high energy particles is discussed. The code will implement the intranuclear cas-cade evaporation model and the model describing the collision cascade of heavy ions in materials. An interactive environm...
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Citations
... Enfin il existe d'autres types de mesures sur les cibles épaisses utiles à certaines applications, comme notamment l'énergie déposée dans la cible ou les dommages créés. N'ayant pas traité ces sujets du fait qu'ils ne peuvent pas vraiment en retour apporter quelque chose à la physique de la spallation, je laisse les personnes intéressées consulter par exemple la section 11.2.5 de (Filges et Goldenbaum 2010), ainsi que le mémoire de thèses de C. Villagrasa (Villagrasa-Cantón 2003) ou les articles de Konobeyev et al. (2007) et Korovin et al. (2008). ...
This HDR report summarizes about ten years spent around spallation reaction modelling. Spallation reactions are defined as interaction of a light par- ticle, say a nucleon, and a nucleus at an incident energy from 100 MeV up to 2-3 GeV. These reactions are divided in two steps. A first and fast phase, direct reac- tions also called intranuclear cascade, following by a slower phase, deexcitation of the remnant nucleus. Using the combination of INCL4, the intranuclear cas- cade model developed by the group, and the deexcitation code Abla from GSI, as a connecting thread, the multi-faceted spallation is presented. Chapter one deals with physics and codes, then different types of benchmarks are addressed, followed by several domains where spallation modelling plays a role, and finally, taking advan- tage of what has been said previously and of what can be read in the literature, new developments are suggested.
A Monte Carlo code is developed in Visual Basic 6.0 for the study of radiation damage of pure metals irradiated by a neutron spectrum. At energies <10 MeV, development of cascades of elastic interactions of both primary neutrons and secondary recoiled atoms is incorporated. In a collision, kinetic energy given to an atom below or above the threshold displacement energy Ed (eV) is calculated along with the displacements. Displacements, defect production efficiency η, and damage energy Tdam are estimated to relate to the physical changes in the irradiated metal and to estimate the displacements per atom. The code is validated by determining the defect density on the surface of irradiated thin nickel foil and comparing with the hill-hock density of displaced atoms, using atomic force microscopy. In the case of irradiation of a niobium sample, stress-strain and I-V characteristics are measured before and after the irradiation by neutrons from an Am-Be source, and both stress and electrical resistance are shown to be enhanced after the irradiation.
