论文标题
Feshbach共鸣状态的层析成像
Tomography of Feshbach Resonance States
论文作者
论文摘要
Feshbach共振是粒子间相互作用的基础，在与原子，离子和分子的冷碰撞中变得尤为重要。在这里，我们介绍了基准系统中Feshbach共振的检测，以与高度相互作用和高度各向异性碰撞 - 分子氢离子与高贵的气体碰撞。碰撞是通过冷penning电离仅填充跨越相互作用潜力的短期和远程部分的Feshbach共振的。我们使用离子电子重合检测以断层扫描方式解决了所有最终分子通道。我们证明了最终状态分布的非统计性质。通过在抗势能表面上执行量子散射计算，我们表明feshbach共振途径的分离揭示了它们在碰撞结果中的独特指纹。
Feshbach resonances are fundamental to interparticle interactions and become particularly important in cold collisions with atoms, ions, and molecules. Here we present the detection of Feshbach resonances in a benchmark system for strongly interacting and highly anisotropic collisions -- molecular hydrogen ions colliding with noble gas atoms. The collisions are launched by cold Penning ionization exclusively populating Feshbach resonances that span both short- and long-range parts of the interaction potential. We resolved all final molecular channels in a tomographic manner using ion-electron coincidence detection. We demonstrate the non-statistical nature of the final state distribution. By performing quantum scattering calculations on ab initio potential energy surfaces, we show that the isolation of the Feshbach resonance pathways reveals their distinctive fingerprints in the collision outcome.
