Figure 1.

Further analysis of data of Britten et al¹³ for (a) α radiosensitivity in Hep-2 cells with changes in linear energy transfer (LET), for two different values of the initial incident energy. (b) Relative biological effect (RBE) plots with dose per fraction calculated using Equation (A7) in the Appendix A, constructed from the α and β radiosensitivities found at various positions in spread-out Bragg peaks and obtained using two different incident energies. The coded letters (a–g) refer respectively to different irradiation parameters given in the table.