Response of alanine and barium dithionate EPR dosimeters.

The response of alanine and barium dithionate EPR dosimeters to proton irradiation with energies ranging from 6.6-25 MeV has been investigated. EPR dosimeters were calibrated using calibrated gamma sources.

The mechanisms of radical formation in L-alpha-alanine.

Modeling of radical transformations in L-alpha-alanine after irradiation was performed for isolated radicals and for clusters. Special attention was devoted to the explanation of the experimental results concerning selective proton transfer and behavior of cation-radicals because a unique interpretation of the corresponding experiments is very difficult. Both semi-empirical and ab initio methods were used depending on the size of system under investigation.