论文标题
冷RB-CA $^+$混合陷阱中的离子损失事件：光解离，黑体辐射和非辐射电荷交换
Ion loss events in a cold Rb-Ca$^+$ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
论文作者
论文摘要
从理论上讲，我们从理论上研究了激光冷却的$^{87} $ rb地面原子和$^{40} $ ca $^+$地面离子在Ref的混合陷阱实验中。 [物理。莱特牧师。 107，243202（2011）]，导致离子损失。冷$^{87} $ rb $^{40} $ ca $^+$地基分子离子是由辐射协会创建的，我们证明它们受到黑体辐射的光电解异位的保护，并由$^{40} $ CA $^+Ca $^+$ ca+$ coleing laser在397〜nm处得到保护。这项研究对实验中的$^{87} $ rb $^{40} $ rb $^{40}的直接观察产生了一种解释，与使用其他物种的其他混合陷阱实验相比，实验中的$ ca $^+$离子。基于自旋轨道相互作用的新型分子数据，我们还确认非放射性电荷交换是CA $^+$的主要损失过程，并获得与实验观测和先前计算一致的速率。
We theoretically investigate the collisional dynamics of laser-cooled $^{87}$Rb ground-state atoms and $^{40}$Ca$^+$ ground-state ions in the context of the hybrid trap experiment of Ref. [Phys. Rev. Lett. 107, 243202 (2011)], leading to ion losses. Cold $^{87}$Rb$^{40}$Ca$^+$ ground-state molecular ions are created by radiative association, and we demonstrate that they are protected against photodissociation by black-body radiation and by the $^{40}$Ca$^+$ cooling laser at 397~nm. This study yields an interpretation of the direct observation of $^{87}$Rb$^{40}$Ca$^+$ ions in the experiment, in contrast to other hybrid trap experiments using other species. Based on novel molecular data for the spin-orbit interaction, we also confirm that the non-radiative charge-exchange is the dominant loss process for Ca$^+$ and obtain rates in agreement with experimental observations and a previous calculation.
