Journal Article

GSI-2021-00581

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Low-lying electric dipole ${\gamma}$-continuum for the unstable $^{62,64}Fe$ nuclei: Strength evolution with neutron number

Avigo, R. ; Wieland, O. (Corresponding author) ; Bracco, A. ; Camera, F. ; Ameil, F.GSI* ; Arici, T. ; Ataç, A. ; Barrientos, D. ; Bazzacco, D. ; Bednarczyk, P. ; Benzoni, G. ; Birkenbach, B. ; Blasi, N. ; Boston, H. C. ; Bottoni, S. ; Brambilla, S. ; Bruyneel, B. ; Ciemała, M. ; Clément, E. ; Cortes, M. L.GSI* ; Crespi, F. C. L. ; Cullen, D. M. ; Curien, D. ; Didierjean, F. ; Domingo-Pardo, C. ; Duchêne, G. ; Eberth, J. ; Görgen, A. ; Gadea, A. ; Gerl, J.GSI* ; Goel, N. ; Golubev, P. ; González, V. ; Górska, M.GSI* ; Gottardo, A. ; Gregor, E. ; Guastalla, G.GSI* ; Habermann, T.GSI* ; Harkness-Brennan, L. J. ; Jungclaus, A. ; Kmiecik, M. ; Kojouharov, I.GSI* ; Korten, W. ; Kurz, N.GSI* ; Labiche, M. ; Lalović, N. ; Leoni, S. ; Lettmann, M. ; Maj, A. ; Menegazzo, R. ; Mengoni, D. ; Merchan, E.GSI* ; Million, B. ; Morales, A. I. ; Napoli, D. R. ; Nociforo, C.GSI* ; Nyberg, J. ; Pietralla, N. ; Pietri, S.GSI* ; Podolyák, Z. ; Ponomarev, V. Y. ; Pullia, A. ; Quintana, B. ; Rainovski, G. ; Ralet, D.GSI* ; Recchia, F. ; Reese, M. ; Regan, P. ; Reiter, P. ; Riboldi, S. ; Rudolph, D. ; Salsac, M. D. ; Sanchis, E. ; Sarmiento, L. G. ; Schaffner, H.GSI* ; Simpson, J. ; Stezowski, O. ; Valiente-Dobón, J. J. ; Wollersheim, H. J.GSI*

2020
North-Holland Publ. Amsterdam

This record in other databases:

Please use a persistent id in citations: doi:10.1016/j.physletb.2020.135951  doi:10.15120/GSI-2021-00581

Abstract: The γ -ray emission from the nuclei $^{62,64}$Fe following Coulomb excitation at bombarding energy of 400-440 AMeV was measured with special focus on E 1 transitions in the energy region 4-8 MeV. The unstable neutron-rich nuclei $^{62,64}$Fe 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 E 1 strength is extracted and compared to microscopic quasi-particle phonon model calculations. The trend of the E 1 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 E 1 nuclear response below the neutron binding energy.

Keyword(s): 64 Fe ; 62 Fe ; Nuclear structure ; Dipole excitation around neutron threshold ; 64Fe ; 62Fe

Note: This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3

---

Contributing Institute(s):

1. Kernspektroskopie (KSP)
2. System Planning SFRS (SFS)
3. Detektorlabor (DTL)
4. Experimentelektronik (EEL)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. ENSAR - European Nuclear Science and Applications Research (262010) (262010)

Experiment(s):

1. (Facility Altdaten therefore no facility)

Appears in the scientific report 2021

---

Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---