Resonant Control of Elastic Collisions in an Optically Trapped Fermi Gas of Atoms
Resonant Control of Elastic Collisions in an Optically Trapped Fermi Gas of Atoms
We have loaded an ultracold gas of fermionic atoms into a far-off resonance optical dipole trap and precisely controlled the spin composition of the trapped gas. We have measured a magnetic-field Feshbach resonance between atoms in the two lowest energy spin states, /9/2,-9/2> and /9/2,-7/2>. The resonance peaks at a …