Product correlations in photofragment dynamics
Product correlations in photofragment dynamics
复制标题
照片碎片动力学中的产品相关性
DOI：
10.1039/dc9868200013
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
J. Hepburn
中科院分区：
文献类型：
--
作者：
G. Hall;N. Sivakumar;Rachel R. Ogorzalek;G. Chawla;Hans;P. Houston;I. Burak;J. Hepburn
在光解离动力学的研究中测量的标量或矢量之间的相关性可以提供解离事件的非常详细的图像。本文讨论了利用多普勒剖面和飞行时间光谱学来了解两个反冲碎片的单独内能之间的相关性，研究碎片的内能分布随其反冲方向变化的方式，并确定光碎片的反冲速度方向与其旋转矢量之间的角度。介绍了两种新技术。应用于飞行时间质谱仪的电势的高压切换用于将光碎片的速度分布映射到它们的到达时间分布上。利用亚多普勒分辨率的偏振光探测光碎片，以确定其旋转矢量与反冲速度矢量之间的角度相关程度。
Correlations between either scalar or vector quantities measured in the study of photodissociation dynamics can serve to provide a very detailed picture of the dissociative event. This article discusses the use of Doppler profile and time-of-flight spectroscopy to learn about the correlation between the separate internal energies of two recoiling fragments, to study the way in which the internal energy distribution of a fragment varies with its recoil direction and to determine the angle between a photofragment's recoil velocity direction and its rotation vector. Two new techniques are introduced. High-voltage switching of the potential applied to a time-of-flight mass spectrometer is used to map the velocity distribution of photofragments onto their arrival time distribution. Probing of photofragments by polarized light with sub-Doppler resolution is used to determine the degree of angular correlation between their rotation vector and their recoil velocity vector.