Energy and Angular Distribution of Electrons Ejected from Argon by 5-keV to 1.5-MeV Protons

Energy and Angular Distribution of Electrons Ejected from Hydrogen and Helium Gas by Protons

استفاده از شتابگر الکترونی MeV 10 برای تولید تابش چرنکوف درناحیه پرتوایکس نرم

Cherenkov radiation is generated when relativistic charged particles move in a medium with refractive index larger than unity. Although, the refractive index is generally smaller than unity in X-ray region, in the vicinity of atomic absorption edges, the refractive index may exceed unity and Cherenkov radiation can be generated in soft X-ray region with a narrow band width. In this paper, the s...

Assessment of The Relation Between Energy Of Primary Protons And Undesired Neutron Dose During Proton Therapy By Monte Carlo Method

Introduction: High-energy beams of protons offer significant advantages for the treatment of deepseated local tumors. Their physical depth-dose distribution in tissue is characterized by a small entrance dose and a distinct maximum -Bragg peak- near the end of range with a sharp fall-off at the distal edge. Alongside its advantages there are some point that they need to meticul...

Investigation of the direct DNA damages irradiated by protons of different energies using geant4-DNA toolkit

Background: The total yields of direct Single-Strand Breaks (SSBs) and Double-Strand Breaks (DSBs) in proton energies varying from 0.1 to 40 MeV were calculated. While other studies in this field have not used protons with energy less than 0.5 MeV, our results show interesting and complicated behavior of these protons. Materials and Methods: The simulation has been done using the Geant4-DNA too...

A numerical lattice approach for ionization and capture processes in ion-H2O collisions

Water collisions with ions are relevant in fields such as Astrophysics and Biomedicine. In particular, processes that involve the ejection of electrons play a key role in the biological damage that occurs in ion-beam cancer therapy. Since water is the main component of the cells, there is an increasing demand for detailed information on the ionization of water molecules by ion collisions. We ha...