Table of Contents
Laser Chemistry
Volume 8, Issue 2-4, Pages 283-302

Kinematic Effects on Laser-induced Fluorescence Measurements Performed in Reactive Crossed Beam Experiments

Laboratoire de Photophysique Photochimie Moléculaire and GRECO 87 (CNRS) “Dynamique des Réactions Moléculaires”, UA 348, Université de Bordeaux 1, Talence Cedex 33405, France

Received 25 November 1987; Accepted 2 February 1988

Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A simple, realistic model is developed to take into account kinematic effects on laser-induced fluorescence (LIF) measurements in crossed beam reactive scattering experiments. The conversion factor from nascent populations to measured densities (which are proportional to the LIF intensity) is calculated for several cases of practical interest. The density-flux transformation proposed by Zare and coworkers arises from the model as a limiting case. Results concerning the C+NOCN+O reaction, studied in a pulsed crossed supersonic beam experiment, are also included. Calculations carried out under various conditions emphasize the dramatic importance of beam collimation and pulse duration on detection efficiency.