Table of Contents
Laser Chemistry
Volume 5, Issue 6, Pages 321-337

Laser Photoionization of Potassium Clusters up to K8

Laboratoire Aimé Cotton, CNRS II, Bâtiment 505, Orsay Cedex 91405, France

Copyright © 1986 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.


Some features of small potassium clusters Kn, n ≦ 8 are investigated in a crossed laser-molecular beams experiment coupled with a time-of-flight mass spectrometer. Abrupt step is found in the mass spectrum for n = 8 when the ionizing wavelength is higher than the ionization potentials. Isotopic composition of each mass is observed. Different behavior in ionization potential spectral profiles between odd- and even-numbered clusters is shown. These effects are interpreted in terms of cluster formation and structures.