نتایج جستجو برای: geant4 code
تعداد نتایج: 168902 فیلتر نتایج به سال:
The brachytherapy dose calculations used in treatment planning systems (TPSs) have conventionally been performed assuming homogeneous water. Using measurements and a Monte Carlo simulation, we evaluated the dosimetric impact of an air passage on brachytherapy for bronchus cancer. To obtain the geometrical characteristics of an air passage, we analyzed the anatomical information from CT images o...
Although the Monte Carlo (MC) method allows accurate dose calculation for proton radiotherapy, its usage is limited due to long computing time. In order to gain efficiency, a new macro MC (MMC) technique for proton dose calculations has been developed. The basic principle of the MMC transport is a local to global MC approach. The local simulations using GEANT4 consist of mono-energetic proton p...
Evaluating the capabilities of GEANT4 code and COMSOL Multiphysics software can be achieved through coupling for an betavoltaic battery design. Spatial distribution deposited energy beta particles in semiconductor transducer has been simulated by using then, electron-hole pair generation rate obtained. Subsequently, output performances such as current-voltage (I–V) characteristics maximum elect...
Adequate description of electro and gamma nuclear physics is of utmost importance in studies of electron beam-dumps and intense electron beam accelerators. I also is mandatory to describe neutron backgrounds and activation in linear colliders. This physics was elaborated in Geant4 over the last year, and now entered into the stage of practical application. In the Geant4 Photo-nuclear data base ...
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