Collisions in a cesium hybrid optical and magnetic trap
Collisions in a cesium hybrid optical and magnetic trap
复制标题
铯混合光磁陷阱中的碰撞
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Pierre Pillet
中科院分区：
文献类型：
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作者：
N. Hoang;N. Zahzam;Samuel Guibal;Pierre Pillet
本文提出了一种在非耗散阱中囚禁Cs原子的新方案。陷阱涉及光偶极力和磁力。该装置适用于最低能量塞曼子能级的Cs原子，从而避免了两体非弹性碰撞，从而防止在纯磁阱中达到Cs的玻色-爱因斯坦凝聚。此外，可以施加额外的磁场，从而可以微调两体弹性碰撞横截面。我们报告这样一个陷阱的实验实现，并描述了被困原子样品的特性。碰撞制度的分析进行使用的被困原子云的振荡模式的阻尼测量。
Abstract.A new scheme for trapping Cs atoms in a non dissipative trap has been developed. The trap involves both optical dipole forces and magnetic forces. This device is suitable for Cs atoms in the lowest energy Zeeman sublevel, thus avoiding the two-body inelastic collisions which prevented reaching Bose-Einstein condensation of Cs in purely magnetic traps. Furthermore, an additional magnetic field can be applied, allowing a fine tuning of the two-body elastic collision cross-section. We report on the experimental realization of such a trap and describe the characteristics of the trapped atomic sample. An analysis of the collisional regime is performed using measurements of the damping of the oscillatory modes of the trapped atom cloud.