A Review of Stopping Power Theory and Experimental Tests

Stopping power is of direct relevance to the understanding of energy deposition of charged particles products in a fusion burning plasma and charged particle heating and diagnostics as well as being a probe of fundamental collision physics in a many-body medium. The different modeling schemes, from linear response theory and binary scattering theory to molecular dynamics and density functional theory, will be discussed and compared in the context of recent experiments. Several unitless parameters will be used to emphasize regions of validity of different models and point to regimes where experiments can most contribute.