The Department of Accelerator Physics and Radiation Medicine of Moscow State University’s Faculty of Physics conducts experiments on the radiation processing of food products and the development of a new technology for the combined sterilization of bone implants, based on the joint action of different sterilizing factors (radiation and sterilization) in a gaseous medium. Radiation processing of potato tubers and bone implants is performed using accelerated electron beams with energies of 1 MeV. The results from experimental investigations along these lines are presented.

Studies on the radiation treatment of fish products using an electron accelerator with an energy of 1 MeV were carried out. Here, we report the results of the effect of the beams of accelerated...

Results are presented from research to determine dependences of characteristics of dose distributions in biological objects on their thickness and density,

The study presents analytical dependencies that describe the electron spectrum and depth dose distribution in the object with an accelerated electron beam

Assuming the beam spectrum at the accelerator output follows a Gaussian distribution and its attenuation in air is described by a Landau distribution, the ill-posed problem of electron energy spectrum reconstruction using depth-dose distribution was reduced to finding the electron spectrum at the phantom surface as a convolution of the Landau and Gaussian distributions. The algorithm proposed in the study uses the experimentally measured depth dose distributions generated by Varian TrueBeam medical accelerator operating at 6 MeV and 9 MeV modes in water-equivalint and aluminium phantoms and reconstructs the electron spectra in targeted materials. The algorithm uses reference depth dose distributions from monoenergetic electrons calculated using Geant4 toolkit. It was found that the spectra reconstructed using experimental depth dose distributions in solid water and aluminium differ by less than 5%, and reconstructed depth dose distributions corresponding to the reconstructed spectra deviate from experimentally measured ones by no more than 5%.