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Applications to nuclear properties of the microscopic-macroscopic model based on the semiclassical Wigner-Kirkwood method
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2015 (engelsk)Inngår i: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 90, nr 11, artikkel-id 114001Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

Some time ago we proposed a new microscopic-macroscopic model where the semiclassical Wigner-Kirkwood expansion of the energy up to fourth-order in. is used to compute the shell corrections in a deformed Woods-Saxon potential instead of the usual Strutinsky averaging scheme. For a set of 558 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 this paper we analyze the alpha radioactivity in nuclei with mass number A similar to 100, finding good agreement with the available experimental results. We have also estimated spontaneous fission half-lives for superheavy nuclei in the region between Z = 102 and Z = 110. We find that our model predicts reasonably well the experimental half-lives in the considered nuclei, in spite of the fact that the fission barriers turn out to be somewhat too high.

sted, utgiver, år, opplag, sider
Institute of Physics Publishing (IOPP), 2015. Vol. 90, nr 11, artikkel-id 114001
Emneord [en]
microscopic-macroscopic model, nuclear masses, fission, semiclassical Wigner-Kirkwood method
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URN: urn:nbn:se:kth:diva-180634DOI: 10.1088/0031-8949/90/11/114001ISI: 000366871100002Scopus ID: 2-s2.0-84946893594OAI: oai:DiVA.org:kth-180634DiVA, id: diva2:895535
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QC 20160119

Tilgjengelig fra: 2016-01-19 Laget: 2016-01-19 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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