Excitation spectra of a He-3 impurity on He-4 clusters
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Fantoni, S.; Guardiola Barcena, Rafael; Navarro Faus, Jesús
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Aquest document és un/a article, creat/da en: 2004
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The diffusion Monte Carlo technique is used to calculate and analyze the excitation spectrum of a single 3He atom bound to a cluster with N 4He atoms, with the aim of establishing the most adequate filling ordering of single-fermion orbits to the mixed clusters with a large number of 3He atoms. The resulting ordering looks like the rotational spectrum of a diatomic molecule, being classified only by the angular momentum of the level, although vibrational-like excitations appear at higher energies for sufficiently large N. |
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