Table of Contents
Laser Chemistry
Volume 10 (1990), Issue 3, Pages 197-206

Ê-μ-V Correlation In One-Colour Photolysis/Ionization Of Tert-Butyl Nitrite

1Nuclear Research Center-Negev, Division of Chemistry, Beer-Sheva 84190, Israel
2Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel

Received 23 June 1989; Accepted 21 August 1989

Copyright © 1990 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.


An anisotropic spatial velocity distribution was observed for NO+ produced following one-color photolysis/ionization of tert-butyl nitrite (TBN) by a pulsed polarized laser at 266, 355 and 532 nm in a time-of-flight mass spectrometer. The dependence of the NO+ fragment mass peak profile on the wavelength and on the polarization was monitored. The most striking feature is the varying fragment peak splitting obtained under the same experimental conditions by changing the laser polarization direction. This phenomenon is a result of the vector correlation between the laser polarization,Ê, at a given wavelength, the electronic transition dipole moment of TBN,μ, and the direction of the NO fragment velocity, v. The dynamics of the photodissociation process and, in particular, its directional properties are discussed in view of these results.