Photodissociation Dynamics of Small Polyatomic Molecules: Collisional and Collisionless Processes

Reisler教授得到了 实验物理化学计划的两部分研究： 一个是小多原子的光解动力学 分子，重点是电子的影响， 激发态的结构对动力学的影响。 另一个是 高振动激发态的碰撞解离 分子。 实验将用交叉分子 光束、多重光电离检测和光引发 振动激发;产品状态分布将是 测定了 最终目标是更好地控制 分子解离的结果， 潜在表面的特定区域。 这一近期目标 是研究母体分子激发的演化 产物片段激发。 要研究的系统是 卤化氰和相关分子。 %%% 拉伸和弯曲运动的影响 当光使一个分子 将被分解成碎片。问题是 在这项研究中回答的是：什么产品是形成的，如何是 在这些碎片中分配的能量，也就是说， 将能量分配到各种形式的内部 碎片的能量？

Professor Reisler is supported by a grant from the Experimental Physical Chemistry Program for a two-part study: One is the photodissociation dynamics of small polyatomic molecules with emphasis on the influence of the electronic structure of the excited state on the dynamics. The other is collisional dissociation of highly vibrationally excited molecules. The experiments will be done with crossed molecular beams, multiphotoionization detection and photoinitiated vibrational excitation; product state distributions will be measured. The ultimate goal is to achieve better control over the outcomes of molecular dissociations by selective access to specific regions of the potential surface. The immediate goal is to study the evolution of parent molecule excitation into product fragment excitations. The systems to be studied are cyanogen halides and related molecules. %%% The influence of the stretching and bending motions in the molecule on the final outcome when light causes a molecule to come apart into fragments will be studied. The questions to be answered in this study are: What products are formed and how is the energy disposed of among these fragments, that is, what is the energy distribution into the various forms of internal energies of the fragments?