Chemica| reactⅰon 0.4 E T=250 nK 3.3(7)×1012cm3 0.1 Rb rb ● KRb+KRb→K2+Rb2 8 Time(s) E 20Eo b0.1 0.0 E(kV cmr) Dipole moment, d(D) elkaus et al., Science 327, 853 (2010) Niet. al, Nature 464, 1324(2010)Ospelkaus et. al., Science 327, 853 (2010) Ni et. al, Nature 464, 1324 (2010) Chemical reaction