Journal Article

FZJ-2015-02944

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Impact of the phonon coupling on the photon strength function

Achakovskiy, O. ; Avdeenkov, A.FZJ* ; Goriely, S. ; Kamerdzhiev, S. (Corresponding Author) ; Krewald, S.FZJ*

2015
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/8557  doi:10.1103/PhysRevC.91.034620

Abstract: The pygmy dipole resonances and photon strength functions in stable and unstable Ni and Sn isotopes are calculated within the microscopic self-consistent version of the extended theory of finite fermi systems which includes phonon coupling effects.The Skyrme forces SLy4 is used. A pygmy dipole resonance in $^{72}$Ni is predicted at the mean energy of 12.4 MeV exhausting 25.7\% of the total energy-weighted sum rule. The microscopically obtained photon E1 strength functions are compared with available experimental data and used to calculate nuclear reaction properties. Average radiative widths and radiative neutron capture cross sections have been calculated taking the phonon coupling into account as well as the uncertainties caused by various microscopic level density models. In all three quantities considered, the contribution of phonon coupling turned out to be significant and is found necessary to explain available experimental data.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Institut 3 (Theoretische Kernphysik) (IKP-3)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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