Fig. 3From: Sympathetic cooling of molecular ions with ultracold atomsNormalized cooling rate contour plot as a function of ion and neutral masses for q=0.2. Lines of constant T x/T n, labeled by the value of the ratio, are shown as (thick dashed) black lines. Plot markers indicate experimentally realized systems: \(\bigstar \) Yb-Yb +, MIT [72]; ◯ Rb-Yb +, Bonn [73] and Ulm [74]; ⊠ Rb-Ba +, Ulm [74] and Basel [75]; Ca-Yb +, UCLA [76] and Ca-BaCl +, UCLA [41]; Rb-Ca +, Basel [44]; \(\square \) Ca-Ba +, UCLA [45]; ■ Na-Na + UCONN [77]; Rb-OH −, Innsbruck [78] ; ⎔ Rb-N\(_{2}^{+}\), Basel [18]; ● Rb-Rb + Bangalore [79] and Rb-Sr +, Weizmann [34]Back to article page