Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

► Detail differences in electron/positron transport in water in gas and liquid states. ► Emphasizes the importance of swarms as a test of accuracy/completeness of cross-sections. ► Emphasizes the importance of swarms for benchmarking Monte-Carlo simulations. ► Demonstrates the sensitivity of low-energy positron thermalization to cross-sections.