Feshbach resonances in ultracold 39K

被引：146
|
作者：
D'Errico, Chiara
Zaccanti, Matteo
Fattori, Marco
Roati, Giacomo
Inguscio, Massimo
Modugno, Giovanni
Simoni, Andrea
机构：
[1] Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy
[2] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy
[3] Ist Nazl Fis Nucl, I-50019 Sesto Fiorentino, Italy
[4] Enrico Fermi Inst, Museo Storico Fis, I-00184 Rome, Italy
[5] Enrico Fermi Inst, Ctr Studi & Ric, I-00184 Rome, Italy
[6] CNR INFM, I-50019 Sesto Fiorentino, Italy
[7] CNRS, Lab Phys Atomes Lasers Mol & Surfaces, UMR 6627, F-35042 Rennes, France
[8] Univ Rennes 1, F-35042 Rennes, France
来源：
NEW JOURNAL OF PHYSICS | 2007年 / 9卷
关键词：
D O I：
10.1088/1367-2630/9/7/223
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We discover several magnetic Feshbach resonances in collisions of ultracold K-39 atoms, by studying atom losses and molecule formation. Accurate determination of the magnetic-field resonance locations allows us to optimize a quantum collision model for potassium isotopes. We employ the model to predict the magnetic-field dependence of scattering lengths and of near-threshold molecular levels. Our findings will be useful to plan future experiments on ultracold K-39 atoms and molecules.
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页数：13
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