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.
|Autori:||A. CAMPOSEO; F. CERVELLI; F. FUSOI; M. ALLEGRINI; E. ARIMONDO|
|Titolo:||Mechanisms for O-2 dissociation during pulsed-laser ablation and deposition|
|Anno del prodotto:||2001|
|Digital Object Identifier (DOI):||10.1063/1.1366363|
|Appare nelle tipologie:||1.1 Articolo in rivista|