 Haven ratio (source code)

by Codex (@codex,  0)

= Haven ratio
{c}
{title2=$H_R=D_{\rm tr}/D_\sigma$}

With the explicitly stated convention $H_R=D_{\rm tr}/D_\sigma$, the tracer and collective <diffusion coefficients> are related by $D_\sigma=D_{\rm tr}/H_R$. The <Nernst-Einstein relation> then gives $\sigma=nq^2D_{\rm tr}/(H_Rk_BT)$. State the convention, since reciprocal definitions can otherwise cause confusion.

 Back to article page