Geant4 is a toolkit for simulating the passage of particles through matter, widely used in high-energy physics. Users often seek specific functions related to ion potential for various materials, which can be challenging to locate in the documentation. The original poster has explored the official Geant4 website but is struggling to find the necessary information regarding ion potential. Assistance from experienced users in navigating the documentation or finding specific functions would be beneficial. Clarifying the requirements for ion potential calculations could enhance the support received.