Numerical methods for the simulation of radiation transport, in particular Monte Carlo techniques, are playing a fundamental role in the field of dosimetry for radiation protection. For the last 30 years or so, reference quantities have been since about 30 years calculated relying on mathematical analytical human phantoms representative of the standard man. These calculations, in large part bas...

Introduction Electron linear accelerator (LINAC) can be used for neutron production in Boron Neutron Capture Therapy (BNCT). BNCT is an external radiotherapeutic method for the treatment of some cancers. In this study, Varian 2300 C/D LINAC was simulated as an electron accelerator-based photoneutron source to provide a suitable neutron flux for BNCT. Materials and Methods Photoneutron sources w...

Transmutation of burnup products for a typical VVER-1000 reactor in fusion-fission hybrid has been investigated using MCNPX 2.6.0 calculation code. Burnup fission was performed 1000 MW practical power VVER core UO2 fuel and light water as its coolant moderator, well. The have classified separated according to their half-lives usages, the remaining wastes were used fuels reactor. also implemente...

The research deals with a spectrometry of neutron field based on the p(20)+Be source reaction. interaction stands for nuclear reaction where protons accelerated to energy 20 MeV bombard Be target. Produced has broad distribution up 18 MeV. was carried out at Nuclear Physics Institute Czech Academy Sciences and motivated by extension experimental possibilities NG-2 target station. To determine s...

Introduction: Many photogeologic studies and very recent results from orbital geochemical mapping experiments are consistent with the presence of shallow subsurface ice deposits on Mars. The next step in studying these deposits will be to visit them on the surface, probably with mobile robotic explorers. In order for such rover missions to be successful, they must carry instruments capable of i...

We studied the effects of a dry rock sitting on a 3% water-containing martian-surface soil on neutron and gamma-ray fluxes. Rocks with radii of ~25 cm and bigger significantly affect these fluxes and the flux ratios of certain gamma rays. Introduction: The rock surface abundances on Mars are inferred from orbital data to vary from almost zero to ~30% [1]. These rock abundances are consistent wi...

Introduction: Proton radiotherapy is the one of advanced teletherapy methods. The protons deposit their maximum energy in a position called Bragg peak. Therefore, for treatment of cancer, the tumor should be placed at the Bragg peak or SOBP. The scattered photons and neutrons is a challenge in proton radiotherapy. The aim of this study is calculation of absorbed dose from scatt...