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Phase transformations in an AISI 410S stainless steel observed in directional and laser-induced cooling regimes
(ABM, ABC, ABPol, 2012-02-01)
The applications of the chromium ferritic stainless steel AISI 410S have been considerably increased in the last years in many technical fields as chemical industries and oil or gas transportation. However, the phase ...
Cooling a quantum oscillator: A useful analogy to understand laser cooling as a thermodynamical process
(American Physical Society, 2018-03)
We analyze the lowest achievable temperature for a mechanical oscillator coupled with a quantum refrigerator composed of a parametrically driven system that is in contact with a bosonic reservoir where the energy is dumped. ...
Bose-Einstein condensation in 87Rb: characterization of the Brazilian experiment
(Sociedade Brasileira de Física, 2008)
We describe the experimental apparatus and the methods to achieve Bose-Einstein condensation in 87Rb atoms. Atoms are first laser cooled in a standard double magneto-optical trap setup and then transferred into a QUIC trap. ...
Modelo clássico para resfriamento atômico: uma forma pedagógica de entender o problema
(Sociedade Brasileira de Física - SBFSão Paulo, 2014-03)
In this work we develop a classical model to describe the laser cooling process due to the interaction between an atom and a con guration of laser beams. We derive an expression for the radiation force exerted on the atom, ...
Adhesion after erbium, chromium:yttrium-scandium-gallium-garnet laser application at three different irradiation conditions
(SPRINGER LONDON LTD, 2009)
The aim of this study was to investigate whether distinct cooling of low fluence erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser irradiation would influence adhesion. Main factors tested were: substrates ...
Influence of the irradiation distance and the use of cooling to increase enamel-acid resistance with Er:YAG laser
(ELSEVIER SCI LTD, 2010)
Objectives: The aim of this study was to assess the influence of irradiation distance and the use of cooling in the Er:YAG laser efficacy in preventing enamel demineralization. Methods: 84 enamel blocks were randomly ...
Two-photon Doppler cooling of alkaline-earth-metal and ytterbium atoms
(American Physical SocCollege PkEUA, 2003)
Effects of laser beam energy on the pulsed Nd:YAG laser welding of thin sheet corrosion resistant materials
(Trans Tech Publications Ltd, 2014-01-01)
The aim of this study was to value the possibility to join, for pulsed Nd:YAG laser welding, thin foils lap joints for sealing components in corrosive environment. Experimental investigations were carried out using a pulsed ...
An improved three-dimensional model for growth of oxide films induced by laser heating
(2001-05-15)
In this paper we consider a three-dimensional heat diffusion model to explain the growth of oxide films which takes place when a laser beam is shined on and heats a metallic layer deposited on a glass substrate in a normal ...