We investigate different dissociation mechanisms for O-2 gas during pulsed-laser ablation and deposition. Mesaurements are carried out by using an in situ diagnostics based on absorption spectroscopy of oxygen gas, with space- and time-resolved capabilities, during laser ablation of a metal alloy target in the presence of an oxygen environment. Data, analyzed as a function of ablation parameters, indicate that two different mechanisms, involving electron collisions and formation of a high-density, high-temperature shock layer, play an important role in producing atomic oxygen which can subsequently react with the ablated species. (C) 2001 American Institute of Physics.

Mechanisms for O-2 dissociation during pulsed-laser ablation and deposition

FUSO, FRANCESCO;ALLEGRINI, MARIA;ARIMONDO, ENNIO
2001-01-01

Abstract

We investigate different dissociation mechanisms for O-2 gas during pulsed-laser ablation and deposition. Mesaurements are carried out by using an in situ diagnostics based on absorption spectroscopy of oxygen gas, with space- and time-resolved capabilities, during laser ablation of a metal alloy target in the presence of an oxygen environment. Data, analyzed as a function of ablation parameters, indicate that two different mechanisms, involving electron collisions and formation of a high-density, high-temperature shock layer, play an important role in producing atomic oxygen which can subsequently react with the ablated species. (C) 2001 American Institute of Physics.
2001
A., Camposeo; F., Cervelli; Fuso, Francesco; Allegrini, Maria; Arimondo, Ennio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/178192
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