Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation

H.M.J.M. Boesten; J.G.C. Tempelaars; B.J. Verhaar

doi:10.1103/PhysRevA.54.R3726

Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation

H.M.J.M. Boesten
, J.G.C. Tempelaars
, B.J. Verhaar

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

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.

Original language	English
Pages (from-to)	R3726-R3729
Number of pages	4
Journal	Physical Review A: Atomic, Molecular and Optical Physics
Volume	54
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.54.R3726
Publication status	Published - 1996

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title = "Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation",

abstract = "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.",

author = "H.M.J.M. Boesten and J.G.C. Tempelaars and B.J. Verhaar",

year = "1996",

doi = "10.1103/PhysRevA.54.R3726",

language = "English",

volume = "54",

pages = "R3726--R3729",

journal = "Physical Review A: Atomic, Molecular and Optical Physics",

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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

SN - 1050-2947

VL - 54

SP - R3726-R3729

JO - Physical Review A: Atomic, Molecular and Optical Physics

JF - Physical Review A: Atomic, Molecular and Optical Physics

IS - 5

ER -

Properties of cold collisions of 39K atoms and of 41K atoms in relation to Bose-Einstein condensation

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