Mic–Mac model based on the Wigner–Kirkwood method

Bhagwat, A.UM-DAE Centre for Excellence in Basic Sciences, Mumbai, 400 098, India (författare)

QC 20240103
About a decade ago we proposed a new Microscopic–Macroscopic (Mic–Mac) model where the semiclassical Wigner–Kirkwood expansion of the energy up to fourth-order in ħ is used to compute the shell corrections in a deformed Woods-Saxon potential instead of the usual Strutinsky averaging scheme [1, 2]. For a set of 551 even-even nuclei computed with this new model, we found a rms deviation of 610 keV from the experimental masses, similar to the value obtained using the well-known Finite Range Droplet Model and the Lublin–Strasbourg Drop Model for the same set of nuclei. In a next step, we compute the ground-state properties of these 551 nuclei with the same method but using the mean-field provided by the Gogny forces within an Extended Thomas-Fermi approximation. We find that this Mic–Mac model using the Gogny D1S (D1M) force gives a fairly good description of the ground-state energies with a rms deviation of 834 keV (819 keV). This implies that Mic–Mac models based on effective two-body forces, for example Gogny D1S and D1M interactions, perform practically as well as the most efficient Mic–Mac models regarding ground-state properties.

Centelles, M.Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain; Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain (författare)
Viñas, X.Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain; Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain; Institut Menorquí d’Estudis, Camí des Castell 28, 07702, Maó, Spain (författare)
Wyss, Ramon AlexanderKTH,Kärnfysik(Swepub:kth)u1ayc3r9 (författare)
UM-DAE Centre for Excellence in Basic Sciences, Mumbai, 400 098, IndiaDepartament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain; Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), Martí i Franquès 1, 08028, Barcelona, Spain (creator_code:org_t)

Av författaren/redakt...: Bhagwat, A.; Centelles, M.; Viñas, X.; Wyss, Ramon Alex ...

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