The dosimetric properties of fast-neutron beams with energies ≤80 MeV were explored using Monte Carlo techniques. Taking into account transport of all relevant types of released charged particles (electrons, protons, deuterons, tritons, 3He and α particles) pencil-beam dose distributions were derived and used to calculate absorbed dose distributions. Broad-beam depth doses in phantoms of differ...

Abstract Development of neutron radiation therapy arises the question ensuring uniformity measurements absorbed dose and rate radiation. FGUP “VNIIFTRI” improved primary method means reproducing unit within framework improving State standard units equivalent GET 117-2010. A set ionization chambers has been created upper value reproduction expanded. hardware-methodical complex also developed for...

background: several landmine detection methods, based on nuclear techniques, have been suggested during the recent years. neutron energy moderation, neutron-induced gamma emission, neutron and gamma attenuation, and fast neutron backscattering are nuclear-based methods used for landmine detection. the aim of this study is to use backscattered neutron for landmine detection. materials and method...

Gas electron multiplier (GEM) detectors and activation foils have been used for dosimetry of thermal beamlines a pulsed neutron source. The first is an active detector that performs measurements using the time-of-flight technique, taking advantage nature same has successfully to measure profiles beams. second passive irradiation method independently confirms measured fluxes equipment materials ...

PURPOSE We have been developing a fast-neutron spectroscopic technique to quantitatively image the distribution of elements in the body using quasi-monochromatic neutron beams. Previously, we demonstrated the ability of the technique to quantify specific elements in the liver and breast while limiting radiation dose to clinically acceptable levels. Here we present the results of a physical dose...

background: boron neutron capture therapy (bnct) is a very promising treatment for patients suffering gliobastoma multiforme, an aggressive type of brain cancer, where conventional radiation therapies fail. thermal neutrons are suitable for the direct treatment of cancers which are located at near-tissue-surface deep-seated tumors need harder, epithermal neutron energy spectra. materials and me...