The evaluation of the high-energy proton radiation effects on the human blood-forming organs (BFO) with self-shielding taken into account

To evaluate the ionizing radiation effects on the BFO it is necessary to take into account the dependence of the dose effects on BFO, shielding and self-shielding of different parts of the BFO and physical characteristics of radiations. The evaluations of the BFO shielding were made on the basis of the shielding calculation of 330 points in which BFO were placed. The calculations show that tissue thickness of the shielding BFO varies from 1 to 70 g/cm2. The percentage of thicknesses of 2,5 and 10 g/cm2 is 5,22 and 50 respectively. With the help of these data the proton doses from solar cosmic rays with characteristic rigidities in the range from 60 to 200 MV were calculated. These results show that the effective thickness of BFO shielding depends strongly on the characteristic rigidity. As a result of the irradiation irregularity of different parts of the BFO and the type of the dose effect function, the radiation effects of the cosmic ray protons may be evaluated with the help of the dose value mean with respect to BFO