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Fig. 6 | EPJ Techniques and Instrumentation

Fig. 6

From: Sympathetic cooling of molecular ions with ultracold atoms

Fig. 6

Detuning of the cooling laser frequency for Ca (blue line) and Rb (red line) versus atom-ion separation. The lines in this figure assume the lasers are detuned by one linewidth below the bare-atom transition frequency.The ground-state polarizability of the Ca (Rb) atom is larger (smaller) than the excited state, leading to blue-shifting (red-shifting) of the transition frequency as the ion approaches. The blue (red) bars show the distance a Ca (Rb) atom would travel during a collision with a 150 amu ion at 10 mK during one excited state lifetime

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