Theoretical approach to relative biological effectiveness of negative pions. 2

The parameters calculated in part 1 of this series devoted to the application of the general RBE theory to negative pions, represent the characteristics of radiation energy deposition that enter into the theory. These implicitly include the customary microdosimetric quantities, too, which now are calculated explicitly and compared to experimental data. Good agreement is found with respect to single-event spectra and their mean values for different components and interaction modes and at different positions in the pion beam. These results support the physical side of the approach in general and, in particular, the simplifications and approximations used to treat pions in this way. (author)