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

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Author(s): R. T. Khaydarov | U. S. Kunishev

Journal: International Journal of Plasma Science and Engineering
ISSN 1687-6245

Volume: 2008;
Date: 2008;
Original page

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 1011 W/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.
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