Fig. 1 | Nature Communications

Fig. 1

From: Above-threshold scattering about a Feshbach resonance for ultracold atoms in an optical collider

Fig. 1

Interaction potentials and scattering cross section. a Relevant long range s-wave and d-wave potential curves52 involved in the Feshbach resonance between incident atoms in the |1, 1〉 + |2, 0〉 hyperfine states, labeled according to the free atom states to which they connect. The |1, −1〉 + |2, 2〉 potential curve corresponds to a s-wave closed channel supporting a quasi-bound state to which the interacting atoms can couple during the collision, provided that the difference in the collision energy of the atoms E nom and the energy of the bound state is small. From the bound state the atoms can elastically scatter back into the s-wave entrance channel or decay into either of the two dominant d-wave open channels, |1, 1〉 + |2, −1〉 and |1, 1〉 + |2, −2〉 (inelastic scattering). b The total scattering cross section of the 9.040 G resonance as a function of applied bias field and collision energy of the interacting atoms

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