@Article{AGATACollaborationAvigo_etal2020,
author="AGATA Collaboration (Avigo, R. et al
and Domingo-Pardo, C.
and Gadea, A.
and Gonzalez, V.",
title="Low-lying electric dipole gamma-continuum for the unstable Fe-62(,)64 nuclei: Strength evolution with neutron number",
journal="Physics Letters B",
year="2020",
publisher="Elsevier",
volume="811",
pages="135951--6pp",
optkeywords="Fe-64; Fe-62; Nuclear structure; Dipole excitation around neutron threshold",
abstract="The gamma-ray emission from the nuclei Fe-62,Fe-64 following Coulomb excitation at bombarding energy of 400-440 AMeV was measured with special focus on E1 transitions in the energy region 4-8 MeV. The unstable neutron-rich nuclei Fe-62,Fe-64 were produced at the FAIR-GSI laboratories and selected with the FRS spectrometer. The gamma decay was detected with AGATA. From the measured gamma-ray spectra the summed E1 strength is extracted and compared to microscopic quasi-particle phonon model calculations. The trend of the E1 strength with increasing neutron number is found to be fairly well reproduced with calculations that assume a rather complex structure of the 1(-) states (three-phonon states) inducing a strong fragmentation of the E1 nuclear response below the neutron binding energy.",
optnote="WOS:000612225400080",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4700), last updated on Fri, 19 Feb 2021 08:23:08 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2020.135951",
opturl="https://doi.org/10.1016/j.physletb.2020.135951",
language="English"
}