Dynamics of State-Selected and Ultra Cold Collisions (Physics)

我们将继续研究态选择碱原子的非弹性碰撞动力学。在新的授权期内，将进行三个主要项目：(1)能量转移截面作为反应物原子速度和极化的函数：(2)锂原子碰撞中的缔合电离作为速度和极化的函数；(3)用单原子束和声光调制多普勒谱研究了超低温碰撞中的缔合电离。这些研究将在新的速度区域以新的细节探索原子相互作用的性质，并将允许在相应更广泛的参数范围内与理论进行比较。

A study of inelastic collision dynamics in state-selected alkali atoms will be continued. In the new grant period three major projects will be undertaken: (1) energy transfer cross sections as a function of velocity and polarization of the reactant atom; (2) Associative ionization in lithium atom collisions as a function of velocity and polarization; (3) Associative ionization in collisions at ultra-cold temperatures using a single atomic beam and acousto-optic modulated Doppler spectroscopy. These studies will explore the nature of atomic interactions in new detail in new regions of velocity, and will allow comparison with theory over a correspondingly broader range of parameters.