Controlling rotational quenching rates in cold molecular collisions.
Controlling rotational quenching rates in cold molecular collisions.
复制标题
DOI：
10.1063/1.5091576
复制
发表时间：
2019-01
期刊：
影响因子：
--
通讯作者：
J. F. Croft;N. Balakrishnan
中科院分区：
文献类型：
--
作者：
J. F. Croft;N. Balakrishnan
碰撞分子的相对取向和排列在决定化学过程的速率方面起着关键作用。在这里，我们详细研究了一个典型的例子：旋转淬火HD冷碰撞与H2。结果表明，在v = 1振动能级上，当HD沿着碰撞轴排列时，从j = 2 → 0的转动猝灭速率最大，当HD沿所谓的魔角排列时，转动猝灭速率最小.这是从相当普遍的螺旋度考虑得出的，并表明其他类似系统的猝灭速率也可以用这种方式控制。
The relative orientation and alignment of colliding molecules plays a key role in determining the rates of chemical processes. Here, we examine in detail a prototypical example: rotational quenching of HD in cold collisions with H2. We show that the rotational quenching rate from j = 2 → 0, in the v = 1 vibrational level, can be maximized by aligning the HD along the collision axis and can be minimized by aligning the HD at the so called magic angle. This follows from quite general helicity considerations and suggests that quenching rates for other similar systems can also be controlled in this manner.