Contribution to the Concentration Dependence of the Self Diffusion of Interacting Brownian Macroparticles

The generalized Langewn equauon and the srauonary requirement for an squdlbrmm s>~tsm _uc wed 10 c~lculatc the modlflcatlon of the self (tracer) dlffuslon corffuxnt by dwct mterawons In Ihc absence of h\drodd\namrL, thl. mod~f~c.~cwn of D, IS equal to the prelqously predtcted modifuxuon of the muwal-dlffuslon coeffwem D, h?. the-wne effect though D, 1s also modllied by chrect mteracllons m another \\a> The effect treated here ma> oe ~le\\sd as hemp rl change III rhs generalwed Smoluchowskl equauon m which rhc free-parrlcle dlffuslon coefficlem Do IS replaced b> a dresicd dlffucron coefftcwm. and nox as bemg a memon-function effect in the comentlonal gcnerahzed Smolucho*shi equauon