TY - JOUR

T1 - Determination of the s-wave scattering length of chromium

AU - Schmidt, Piet Oliver

AU - Hensler, S.

AU - Werner, J.

AU - Griesmaier, A.

AU - Görlitz, A.

AU - Pfau, T.

AU - Simoni, A.

N1 - Funding information: We wish to thank the NIST, Gaithersburg, Atomic Physics Division led by P. S. Julienne for the ground-state collisions code and F. Pirani for useful comments on the potential. This work was funded by the Forscher?>gruppe “Quantengase” of the DFG and the European RTN “Cold Quantum Gases” under Contract No. HPRN-?>CT-2000-00125. P. O. S. has been supported by the Studienstiftung des deutschen Volkes.

PY - 2003/11/7

Y1 - 2003/11/7

N2 - A measurement of the s-wave scattering length of bosonic chromium atoms, spin polarized in the weak-field seeking J=mJ=3 state, from cross-dimensional relaxation in a magnetic trap was reported. Thus, careful analysis of the temperature dependence of the collisionall cross section for 52Cr in a range from 5 to 500 μK not only allowed to place bounds on the magnitude of the scattering length, but also to infer its sign. Rescaling a 52Cr model potential to 50Cr strongly suggests a positive scattering length also for 50Cr.

AB - A measurement of the s-wave scattering length of bosonic chromium atoms, spin polarized in the weak-field seeking J=mJ=3 state, from cross-dimensional relaxation in a magnetic trap was reported. Thus, careful analysis of the temperature dependence of the collisionall cross section for 52Cr in a range from 5 to 500 μK not only allowed to place bounds on the magnitude of the scattering length, but also to infer its sign. Rescaling a 52Cr model potential to 50Cr strongly suggests a positive scattering length also for 50Cr.

UR - http://www.scopus.com/inward/record.url?scp=0346846618&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0346846618

VL - 91

SP - 193201/1-193201/4

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 19

ER -