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Recent developments in the Wigner - Kirkwood mass formula
Vise andre og tillknytning
2013 (engelsk)Inngår i: International Conference on Recent Trends in Nuclear Physics-2012 (ICRTNP-2012), 2013, s. 20-24Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The recently proposed microscopic - macroscopic model for nuclear masses, based on the shell corrections obtained by using the semi - classical Wigner - Kirkwood (WK) ℏ expansion of one body quantal partition function, has been extended to the even - even deformed nuclei. The nuclear potential is assumed to be deformed Woods - Saxon with spin - orbit contribution. The Coulomb potential is obtained by folding charge densities. The resulting partition function is expanded upto the fourth order in ℏ to obtain averaged energies. The shell corrections thus obtained along with pairing energies determined within the framework of the Lipkin - Nogami scheme constitute microscopic part of the model. The macroscopic part is obtained from a liquid drop formula, with nine adjustable parameters. These parameters are fitted by considering a large set of 561 even - even nuclei with Z ≥ 8 and N ≥ 8. The fit yields rms deviation of merely 610 keV from the corresponding experimental masses. A few applications of the mass formula are presented and discussed in this paper.

sted, utgiver, år, opplag, sider
2013. s. 20-24
Serie
AIP Conference Proceedings, ISSN 0094-243X ; 1524
Emneord [en]
Microscopic - Macroscopic Mass Formulas, Wigner - Kirkwood Smoothing Scheme
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-134480DOI: 10.1063/1.4801670ISI: 000317983700005Scopus ID: 2-s2.0-84876893228ISBN: 9780735411470 (tryckt)OAI: oai:DiVA.org:kth-134480DiVA, id: diva2:667114
Konferanse
International Conference on Recent Trends in Nuclear Physics-2012, ICRTNP 2012, 19 November 2012 through 21 November 2012, Barotiwala
Merknad

QC 20131125

Tilgjengelig fra: 2013-11-25 Laget: 2013-11-25 Sist oppdatert: 2013-11-25bibliografisk kontrollert

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