Measurement of the local temperature in an ion track using low-dimensional quantum confinement structure

We measured the local temperature in an ion track utilizing fast exciton recombination in (C3H7NH3)2PbBr4. We obtained the local temperatures of 1000-1500 K for 1.0 MeV H+, 2.0 MeV H+ and He+, and the local temperature was found to be an increasing function of the linear energy transfer. Furthermore, the measured local temperature increased with increasing ion dose, which is attributed to the diffusion of the phonons in an ion track