论文标题
在冷能量下H + HF碰撞中揭示形状共振
Unveiling shape resonances in H + HF collisions at cold energies
论文作者
论文摘要
共振与分子间复合物的捕获有关，其特征是一系列量子数，例如总角动量和奇偶校验，代表了特定部分波浪的代表。在这里，我们显示在寒冷温度下，HF（J = 1,2）与H的旋转淬火受到轨道角动量具有不同总角动量值的单个值的结合而产生的共振流形的强烈影响。在星际介质的低温特征下，这些共振导致热速率系数增加了两倍。我们的结果表明，通过选择HF旋转角动量的比对选择反应物的相对几何形状，可以分解谐振峰，从而解散不同的总角动量对共振的贡献。
Resonances are associated with the trapping of an intermolecular complex, and are characterized by a series of quantum numbers such as the total angular momentum and the parity, representative of a specific partial wave. Here we show how at cold temperatures the rotational quenching of HF(j=1,2) with H is strongly influenced by the presence of manifolds of resonances arising from the combination of a single value of the orbital angular momentum with different total angular momentum values. These resonances give rise up to a two-fold increase in the thermal rate coefficient at the low temperatures characteristic of the interstellar medium. Our results show that by selecting the relative geometry of the reactants by alignment of the HF rotational angular momentum, it is possible to decompose the resonance peak, disentangling the contribution of different total angular momenta to the resonance.
