Sunday, August 31, 2014

What is the largest distance for which the influence of the electric field of a single electron was measured?



I suppose that Rydberg atoms are the best way to find by experiments the largest distance of influence of the electric field of a single electron in a electric dipole. Furthermore how the electrical positive charged nucleus influence this distance? Are there experiments with helium molecules or atoms with only one Rydberg electron?


Update: According to the below fig. from Wikipedia, how there can be a finite ionisation level if the electric field of an electron is infinite? It has to be an empiric value?


https://en.wikipedia.org/wiki/Rydberg_atom




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