Tietz potential
The Tietz potential is given by (Eq. 1 in [1]):
- Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \Phi (r)=D_{e}+D_{e}{\frac {(a+b)e^{-2\beta r}-be^{-\beta r}}{(1+ce^{-\beta r})^{2}}}}