Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions
Charge-exchange collisions between ultracold fermionic lithium atoms and calcium ions
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DOI：
10.1103/physreva.91.032709
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发表时间：
2015-03-30
影响因子：
2.9
通讯作者：
Mukaiyama, Takashi
中科院分区：
文献类型：
--
作者：
Haze, Shinsuke;Saito, Ryoichi;Mukaiyama, Takashi
在毫开尔文温度范围内观察到超冷费米Li-6原子与Ca-40（+）离子的电荷交换碰撞。电荷交换碰撞的反应产物通过质谱法鉴定，在此期间离子的运动被参数化地激发。测量了基态Li-6原子与基态和亚稳态Ca-40（+）离子的电荷交换碰撞截面。研究原子-离子混合物中的非弹性碰撞特性是以超冷原子和离子为基础的超冷化学的重要一步。
Charge-exchange collisions between ultracold fermionic Li-6 atoms and Ca-40(+) ions are observed in the millikelvin temperature range. The reaction product of the charge-exchange collision is identified via mass spectrometry during which the motion of the ions is excited parametrically. The cross sections of the charge-exchange collisions between Li-6 atoms in the ground state and Ca-40(+) ions in the ground and metastable excited states are determined. Investigation of the inelastic collision characteristics in the atom-ion mixture is an important step toward ultracold chemistry based on ultracold atoms and ions.