Table of Contents
International Journal of Plasma Science and Engineering
Volume 2008 (2008), Article ID 180950, 5 pages
http://dx.doi.org/10.1155/2008/180950
Research Article

Mass-Charge and Energy Spectra of Oxygen Ions in a Two-Element Laser-Produced Plasma

Institute of Applied Physics, National University of Uzbekistan, Tashkent, Vuzgorodok 700174, Uzbekistan

Received 16 July 2007; Accepted 12 December 2007

Academic Editor: Anthony L. Peratt

Copyright © 2008 R. T. Khaydarov and U. S. Kunishev. 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.

Abstract

Using a static mass spectrometer, we study the characteristics of multicharge plasma ions generated from solid targets under the action of a 15 nanosecond Nd:YAG laser radiation with maximal intensity 1011W/cm2. We consider two-element solid targets with a mass of the heavy component ranging from 44.9 (Sc) to 174.9 (Lu) with main attention to the properties of oxygen ions. The time-of-flight measurements show that oxygen ions are obtained in the range of the energy E = 40–250 eV with maximal charge Zmax=2. The latter is independent on the target composition for the given intensity of the laser radiation. However, the properties of the energy spectra of oxygen ions strongly depend on the second component of the target, which is explained by the interaction between the light and heavy elements of the target.