Author(s): Ziv Meir, Tomas Sikorsky, Ruti Ben-shlomi, Nitzan Akerman, Yehonatan Dallal, and Roee Ozeri
Experiments show that the energy scale of atom-ion interactions is determined by the force the atom exerts on the ion during a collision.

[Phys. Rev. Lett. 117, 243401] Published Wed Dec 07, 2016