Survival of T4 bacteriophage irradiated in suspension by protons at energies between 4.6 and 2.5 MeV. Dependence on linear energy transfer

The mean survival doses of T4 bacteriophage irradiated in suspension by protons were measured at six values of incident energy. Due to the thickness of the target, the beam stopped inside the suspension, so yielding the overall mean dose, averaged from the incident energy to zero. By a suitable analysis of the overall mean doses, measured at different incident energies, the mean doses in narrow intervals of energy, which may be related to definite LET values, were extracted.