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Title: Characterization of hydroxyapatite laser ablation plumes by fast intensified CCD-imaging
Author: Serra Coromina, Pere
Palau, J.
Varela Fernández, Manuel, 1956-
Esteve Pujol, Joan
Morenza Gil, José Luis
Keywords: Superconductors
Pel·lícules fines
Ablació amb làser
Thin films
Laser ablation
Issue Date: 1995
Publisher: Materials Research Society
Abstract: ArF excimer laser pulses (193 nm, 20 ns, 150 mJ) have been focused on a hydroxyapatite (HA) target in similar conditions to those normally used for thin film deposition. Fast intensified CCD images of HA laser ablation plumes have been taken in vacuum and under different water vapor pressures ranging from 0.01 mbar to 1 mbar. Images of HA ablation in vacuum have shown a plume freely expanding at a constant velocity of 2.3 106 cm/s. HA ablation under a water vapor pressure of 0.01 mbar has revealed an expansion behavior very similar to that of ablation in vacuum. Images taken under a water vapor pressure of 0.1 mbar have shown the formation of a shock structure in the plume. Finally, HA ablation under a water vapor pressure of 1 mbar has revealed the development of some irregularities in the shape of the plume.
Note: Reproducció del document publicat a:
It is part of: Journal of Materials Research, 1995, vol. 10, núm. 2, p. 473-479
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ISSN: 0884-2914
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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