Phys. Rev. A 70, 023206 (2004) [11 pages]Excitation spectra of a 3He impurity on 4He clustersReceived 26 January 2004; published 27 August 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.023206
DOI:
10.1103/PhysRevA.70.023206
PACS:
36.40.−c, 61.46.+w
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