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Title: Tracing the plasma interactions for pulsed reactive crossed-beam laser ablation

Pulsed reactive crossed-beam laser ablation is an effective technique to govern the chemical activity of plasma species and background molecules during pulsed laser deposition. Instead of using a constant background pressure, a gas pulse with a reactive gas, synchronized with the laser beam, is injected into vacuum or a low background pressure near the ablated area of the target. It intercepts the initially generated plasma plume, thereby enhancing the physicochemical interactions between the gaseous environment and the plasma species. For this study, kinetic energy resolved mass-spectrometry and time-resolved plasma imaging were used to study the physicochemical processes occurring during the reactive crossed beam laser ablation of a partially {sup 18}O substituted La{sub 0.6}Sr{sub 0.4}MnO{sub 3} target using oxygen as gas pulse. The characteristics of the ablated plasma are compared with those observed during pulsed laser deposition in different oxygen background pressures.
Authors:
; ; ; ; ; ;  [1] ;  [2]
  1. General Energy Research Department, Paul Scherrer Institute, CH-5232 Villigen PSI (Switzerland)
  2. Ion Beam Physics, ETH Zurich, CH-8093 Zurich (Switzerland)
Publication Date:
OSTI Identifier:
22492872
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 16; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABLATION; ENERGY BEAM DEPOSITION; KINETIC ENERGY; LASER RADIATION; LASERS; MASS SPECTROSCOPY; OXYGEN 18; PLASMA; PULSED IRRADIATION; THERMODYNAMIC ACTIVITY; TIME RESOLUTION