
Pavel Golubev
Senior lecturer

Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number
Author
Summary, in English
The γ-ray emission from the nuclei 62,64Fe 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 62,64Fe were produced at the FAIR-GSI laboratories and selected with the FRS spectrometer. The γ decay was detected with AGATA. From the measured γ-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. © 2020 The Author(s)
Department/s
- Nuclear physics
Publishing year
2020
Language
English
Publication/Series
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
811
Document type
Journal article
Publisher
Elsevier
Topic
- Subatomic Physics
Keywords
- 62Fe
- 64Fe
- Dipole excitation around neutron threshold
- Nuclear structure
Status
Published
Project
- FAIR-NUSTAR: HISPEC-DESPEC experiment & Super-FRS contributions
- Nuclear Structure at the Limits: Isotope-selective Spectroscopy
ISBN/ISSN/Other
- ISSN: 0370-2693