TY  - JOUR
AU  - Achakovskiy, Oleg
AU  - Avdeenkov, Alexander
AU  - Goriely, Stephane
AU  - Kamerdzhiev, Sergei
AU  - Krewald, Siegfried
TI  - Impact of the phonon coupling on the photon strength function
JO  - Physical review / C
VL  - 91
IS  - 3
SN  - 0556-2813
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2015-02944
SP  - 034620
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000352062100001
DO  - DOI:10.1103/PhysRevC.91.034620
UR  - https://juser.fz-juelich.de/record/189976
ER  -