The size of collecting regions in the galactic disk for proton,Beryllium,Carbon and Iron cosmic rays

摘要

Using the length and the shape of the trajectories of cosmic rays the physical dimensions of the collecting regions in the galactic disk are determined.Each ion has a particular collecting region with a size dominated by the atomic number and the position of the observer.Trajectory lengths are mainly determined by the galactic magnetic field and gas density in the disk which are embodied by appropriate algorithms in the calculation.It is found that protons have,by far,the largest collecting basins because a consistent fraction of cosmic protons are secondary protons,a characteristic that enlarges the size of the collecting regions.