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Títol:	Surface location of sodium atoms attached to 3He nanodroplets
Autor/a:	Stienkemeier, F.; Bünermann, O.; Mayol Sánchez, Ricardo; Ancilotto, Francesco; Barranco Gómez, Manuel; Pi Pericay, Martí
Altres autors:	Universitat de Barcelona
Abstract:	We have experimentally studied the electronic $3p\leftarrow 3s$ excitation of Na atoms attached to $^3$He droplets by means of laser-induced fluorescence as well as beam depletion spectroscopy. From the similarities of the spectra (width/shift of absorption lines) with these of Na on $^4$He droplets, we conclude that sodium atoms reside in a ``dimple'' on the droplet surface and that superfluid-related effects are negligible. The experimental results are supported by Density Functional calculations at zero temperature, which confirm the surface location of sodium on $^3$He droplets, and provide a detailed description of the ``dimple'' structure. The calculated shift of the excitation spectra for the two isotopes is in good agreement with the experimental data.
Matèries:	-Superfícies (Física) -Excitació nuclear -Surfaces (Physics) -Nuclear excitation
Drets:	(c) The American Physical Society, 2004
Tipus de document:	Article Article - Versió publicada
Publicat per:	The American Physical Society
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