Fundamental features of dynamically dicorrelated relativistic electrons in the MeV energy range that interact with very dense and hot hydrogenic plasmas of fusion interest are thoroughly investigated. The target is modeled with a Drudelike dielectric function. Longitudinal and undamped pair correlations along overall drift velocity are contrasted to transverse ones decaying exponentially over several tens of target screening length lambda(D). Other novel behaviors include a much higher response to target temperature variations than to density ones for the ratio of dicorrelated to uncorrelated stopping.