Adiabaticity of potential surfaces in elementary reactions

1.光解离过程中势面的绝热性用激光多光子电离技术和激光诱导荧光技术研究了分子光解离过程中产生的原子碎片。研究了解离过程中bnd破裂过程中势能曲线间的非线性跃迁，它对碎片原子的电子态和平动态的影响。研究了Cl_2、ICl、H_3O_2、SiH_4、氯乙烷和O_3的光解过程.反应过程中势面的绝热性通过观察反应产物的初生态平移态和内禀态，研究了活性原子物种O（2P^<4\1> D）、S（3P^<4\1>D）、H（1s ^2S）和H2O（6p）与其它分子的碰撞反应。由于光解离过程被用作活性原子源，反应物和产物在单次碰撞下的状态被研究，因此可以定义能量和测量产物速度的角分布。由测得的多普勒谱计算了反应产物的平动能。通过测量产物原子的精细结构支化比和产物分子的旋振电子态，研究了反应势能曲线的绝热性。研究了下列反应：（1）O（^1D）+H_2，D_3和HD，（2）O（^1D）+烷烃，（3）O（^1D）+ CH_3OH，（4）SO（^1D）+ H_2D_2和HD，（5）S（^1D）+硫杂环丙烷，（6）Ze（6p）+ H_2和HD，（7）H_2O（6p）+ H_2O。

1. Adiabaticity of potential surface in photodissociation processesAtomic fragments produced in the photodissociation processes of molecules were detected with a laser multi-photon ionization technique and also with a laser-induced fluorescence technique. The non-adiabtic transitions between potential curves during the bnd break-up in the dissociation processes were investigated, which affect the electronic and translational states of the fragment atoms. The photodissociation processes of Cl_2, ICl, H_3O_2, SiH_4, Ethylene chlorides, and O_3 were studied.2. Adiabaticity of potential surfaces in reaction processesReactions of active atomic species, O(2P^<4\1>D), S(3P^<4\1>D), H(ls ^2S) and Xe(6p) with other molecules by collisions were investigated by observing the nascent translational and internal states of the reaction products. Since the photodissociation processes were used as sources of the active atom reactants and the products states were studied under single collision energies could be defined and angular distribution of the product velocities could be measured. The translational energies of the reaction products were calculated from the measured Doppler profiles. By measuring the fine structure branching ratios of product atoms and ro-vibronic states of product molecules, the adiabaticity of the potential curves in the reactions were investigated. The following reactions were studied, (1) O(^1D) + H_2, D_3 and HD, (2) O(^1D) + alkanes, (3) O(^1D) + CH_3OH, (4) SO(^1D) + H_2D_2 and HD, (5) S(^1D) + thiirane, (6) Ze(6p) + H_2 and HD, and (7) Xe(6p) + H_2O.