Precise determination of 6Li cold collision parameters by radio-frequency spectroscopy on weakly bound molecules -: art. no. 103201

被引：235

作者：

Bartenstein, M

Altmeyer, A

Riedl, S

Geursen, R

Jochim, S

Chin, C

Denschlag, JH

Grimm, R

Simoni, A

Tiesinga, E

Williams, CJ

Julienne, PS

机构：

[1] Institut für Experimentalphysik, Universität Innsbruck, 6020 Innsbruck

[2] Inst. Quantenoptik/Q., Österreichische Akad. der Wiss.

[3] Atomic Physics Division, Natl. Inst. of Std. and Technology, Gaithersburg, MD 20899

[4] Department of Physics, James Franck Institute, University of Chicago, Chicago

[5] UMR 6627 du CNRS, Lab. Phys. Atomes, Lasers, M./S., Université de Rennes

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.94.103201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We employ radio-frequency spectroscopy on weakly bound Li-6(2) molecules to precisely determine the molecular binding energies and the energy splittings between molecular states for different magnetic fields. These measurements allow us to extract the interaction parameters of ultracold Li-6 atoms based on a multichannel quantum scattering model. We determine the singlet and triplet scattering lengths to be a(s)=45.167(8)a(0) and a(t)=-2140(18)a(0) (1a(0)=0.052 917 7 nm), and the positions of the broad Feshbach resonances in the energetically lowest three s-wave scattering channels to be 83.41(15), 69.04(5), and 81.12(10) mT.

引用

页数：4

共 38 条

[21] Magnetic field control of elastic scattering in a cold gas of fermionic lithium atoms -: art. no. 273202 [J].