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Author Gnezdilov, N. V. ♦ Saperstein, E. E. ♦ Tolokonnikov, S. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NUCLEAR PHYSICS AND RADIATION PHYSICS ♦ CALCIUM 40 ♦ CALCIUM 48 ♦ COUPLING ♦ ENERGY DENSITY ♦ ENERGY DEPENDENCE ♦ GREEN FUNCTION ♦ LEAD 208 ♦ LEAD 212 ♦ MAGIC NUCLEI ♦ NICKEL 56 ♦ NICKEL 78 ♦ PHONONS ♦ SINGLE-PARTICLE MODEL ♦ SPECTROSCOPIC FACTORS ♦ TIN 100 ♦ TIN 132
Abstract Within the self-consistent theory of finite Fermi systems, the total single-particle spectroscopic factors for seven doubly magic nuclei of {sup 40}Ca, {sup 48}Ca, {sup 56}Ni, {sup 78}Ni, {sup 100}Sn, {sup 132}Sn, and {sup 208}Pb and for the {sup 188–212}Pb chain of semimagic even lead isotopes are calculated by the energy-density-functional method implemented with a functional in the form proposed by Fayans and his coauthors. The spectroscopic factor is expressed in terms of the Z factor, which is the residue of the single-particle Green’s function at the single-particle pole. The total Z factor calculated in the present study involves both effects of coupling to phonons and the volume Z factor, which is due to the fact that the mass operator features an energy dependence not associated with surface phonons. The volume Z factor is on the same order of magnitude as the phonon-coupling contribution. The volume effect depends only slightly on the nuclear species and on the single-particle state λ. On the contrary, the phonon contribution to the total spectroscopic factor changes upon going over from one state to another and from one nuclear species to another.
ISSN 10637788
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-01-15
Publisher Place United States
Journal Physics of Atomic Nuclei
Volume Number 78
Issue Number 1


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