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Perfectron Fxperiments on Dynamic Processes of Molecules by Means of Multi-Photon Ionization

Perfectron 利用多光子电离进行分子动态过程实验

基本信息

批准号：
59420012
负责人：
ARIKWA Tatsuo
金额：
$ 24.51万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1984
资助国家：
日本
起止时间：
1984 至 1986
项目状态：
已结题

项目摘要

The main objective of this project is to attain a comprehensive understanding of the dynamic processes of excited molecules by means of the multi-photon ionization of photofragments using a new crossed-beam apparatus called "Perfectron". Owing to the characteristic features of the Perfectron (i.e., the perfect focusing mass as well as energy analyzing properties, the conformal mapping property, Doppler-free measuring scheme, a measuring geometry under Jacobian=1 which saves laboratory to center-of-mass transformation, and so on), we were able to measure the following items with a very high accuracy that was hardly expected to obtain with other conventional photofragment spectroscopic techniques:1) Measurements of laser excess energy partitioned into translational and internal degrees of freedom of the recoiled fragments.2) Determinations of the symmetries and life-times of intermediate states in two photon dissociation processes by means of the anisotropy factors.3) Measurements of the fragmentation of organic compounds,especially through a superexcited states.

该项目的主要目标是通过使用一种称为“Perfectron”的新交叉束装置对光碎片进行多光子电离，全面了解受激分子的动态过程。由于Perfectron的特征（即，完美的聚焦质量以及能量分析特性、保角映射特性、无多普勒测量方案、雅可比矩阵=1下的测量几何结构（节省了实验室到质心的转换）等），我们能够以非常高的精度测量以下项目，这是用其他传统的光碎片光谱技术很难获得的：1）测量激光过剩能量，将其分解为反冲碎片的平移自由度和内自由度。2）用各向异性因子确定双光子解离过程中间态的对称性和寿命。3）测量有机化合物的碎裂，特别是通过超激发态。