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- Instituto Politécnico de LisboaPT125 papers
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7 papers · 1 filter
The CoRoT target HD49933: a possible seismic signature of heavy elements ionization in the deep convective zone
Ana Brito, Ilídio Lopes
We use a seismic diagnostic, based on the derivative of the phase shift of the reflected by the surface acoustic waves, to probe the outer layers of the star HD 49933. This diagnos…
Neutron capture cross section measurement of 238U at the n TOF CERN facility with C6D6 scintillation detectors in the energy region from 1 eV to 700 keV
TOF Collaboration, F. Mingrone, C. Massimi +102
The aim of this work is to provide a precise and accurate measurement of the 238U(n,g) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundame…
Weakly harmonic oscillators perturbed by a conservative noise
Cedric Bernardin, Patricia Goncalves, Milton Jara
We consider a chain of weakly harmonic coupled oscillators perturbed by a conservative noise. We show that by tuning accordingly the coupling constant energy can diffuse like a Bro…
Assessing the quality of restored images in optical long-baseline interferometry
Nuno Gomes, Paulo J. V. Garcia, Éric Thiébaut
Assessing the quality of aperture synthesis maps is relevant for benchmarking image reconstruction algorithms, for the scientific exploitation of data from optical long-baseline in…
Negative spontaneous emission by a moving two-level atom
Sylvain Lannebère, Mário G. Silveirinha
In this paper we investigate how the dynamics of a two-level atom is affected by its interaction with the quantized near field of a plasmonic slab in relative motion. We demonstrat…
Universality of the ion flux to the JET outer wall
N. R. Walkden, A. Wynn, F. Militello +6
Universality in the ion flux to the JET outer-wall is observed in outerwall limiter mounted Langmuir probe (OLP) time-series across a large range of plasma current and line-average…