TY - JOUR
T1 - Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation
AU - Boesten, H.M.J.M.
AU - Tempelaars, J.G.C.
AU - Verhaar, B.J.
PY - 1996
Y1 - 1996
N2 - We have determined properties of cold 39K+39K and 41K+41K collisions by a multichannel inverted perturbation approach applied to spectroscopic data of highly excited 39K singlet and triplet bound states. We predict positive scattering lengths for the 39K+39K and 41K+41K singlet potentials, as well as for the 41K+41K triplet potential, and a negative value for 39K+39K triplet scattering. From a study of the magnetic field dependence we conclude that 41K may be a bosonic atom with a Feshbach resonance in the magnetic field range where these atoms can be trapped in the f=1, mf=-1 hyperfine state, thus providing a possibility to switch between stable and instable condensates in a Bose-Einstein condensation experiment.
AB - We have determined properties of cold 39K+39K and 41K+41K collisions by a multichannel inverted perturbation approach applied to spectroscopic data of highly excited 39K singlet and triplet bound states. We predict positive scattering lengths for the 39K+39K and 41K+41K singlet potentials, as well as for the 41K+41K triplet potential, and a negative value for 39K+39K triplet scattering. From a study of the magnetic field dependence we conclude that 41K may be a bosonic atom with a Feshbach resonance in the magnetic field range where these atoms can be trapped in the f=1, mf=-1 hyperfine state, thus providing a possibility to switch between stable and instable condensates in a Bose-Einstein condensation experiment.
U2 - 10.1103/PhysRevA.54.R3726
DO - 10.1103/PhysRevA.54.R3726
M3 - Article
VL - 54
SP - R3726-R3729
JO - Physical Review A : Atomic, Molecular and Optical Physics
JF - Physical Review A : Atomic, Molecular and Optical Physics
SN - 1050-2947
IS - 5
ER -