Necessary conditions for accurate computations of three-body partial decay widths

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dc.creatorGarrido, E.
dc.creatorJensen, A. S.
dc.creatorFedorov, D. V.
dc.date2008-09-03
dc.date.accessioned2026-07-07T11:45:44Z
dc.date.available2026-07-07T11:45:44Z
dc.descriptionThe partial width for decay of a resonance into three fragments is largely determined at distances where the energy is smaller than the effective potential producing the corresponding wave function. At short distances the many-body properties are accounted for by preformation or spectroscopic factors. We use the adiabatic expansion method combined with the WKB approximation to obtain the indispensable cluster model wave functions at intermediate and larger distances. We test the concept by deriving conditions for the minimal basis expressed in terms of partial waves and radial nodes. We compare results for different effective interactions and methods. Agreement is found with experimental values for a sufficiently large basis. We illustrate the ideas with realistic examples from $α$-emission of $^{12}$C and two-proton emission of $^{17}$Ne. Basis requirements for accurate momentum distributions are briefly discussed.
dc.descriptionTo be published in Physical Review C
dc.identifierhttps://arxiv.org/abs/0809.0565
dc.identifierhttp://arxiv.org/abs/0809.0565
dc.identifierPhys.Rev.C78:034004,2008
dc.identifierdoi:10.1103/PhysRevC.78.034004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201979
dc.subjectNuclear Theory
dc.titleNecessary conditions for accurate computations of three-body partial decay widths
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