  A new method of experimental verification of radial dose distribution models
using solid state thermoluminescent (TL) detectors LiF:Mg,Cu,P has been
recently proposed. In this work the method was applied to verify the spatial
distribution of energy deposition within a single 131Xe ion track. Detectors
were irradiated at the Department of Physics of the University of
Jyv\"askyl\"a, Finland. The obtained results have been compared with
theoretical data, calculated according to the Zhang et al., Cucinotta et al.
and Geiss et al. radial dose distribution (RDD) models. At the lowest dose
range the Zhang et al. RDD model exhibited the best agreement as compared to
experimental data. In the intermediate dose range, up to 104 Gy, the best
agreement was found for the RDD model of Cucinotta et al. The probability of
occurrence of doses higher than 104 Gy within a single 131Xe ion track was
found to be lower than predicted by all the studied RDD models. This may be a
result of diffusion of the charge, which is then captured by TL-related
trapping sites, at the distances up to dozens of nanometers from the ionization
site.
