Autre Publication Scientifique Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2008

Ionization in a frozen Rydberg gas with attractive or repulsive potentials

Résumé

We report clear evidence of the role of dipole-dipole interaction in Penning ionization of Rydberg atoms, leading to the formation of an ultracold plasma. Penning ionization of np Rydberg Cesium atoms is prevented for states with in n < 42, which correspond to a repulsive potential, but it does not occur for n larger than 42, corresponding to an attractive potential. Blackbody radiation is mostly responsible for the background and initial ionization, although ion-Rydberg collisions and population transfer due to limited superradiance may have to be considered.

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hal-00289203 , version 1 (20-06-2008)

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Matthieu Viteau, Amodsen Chotia, Daniel Comparat, Duncan Tate, Thomas F. Gallagher, et al.. Ionization in a frozen Rydberg gas with attractive or repulsive potentials. 2008, pp.4. ⟨hal-00289203⟩
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