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.
Description
Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number - ScienceDirect
%0 Journal Article
%1 AVIGO2020135951
%A Avigo, R.
%A Wieland, O.
%A Bracco, A.
%A Camera, F.
%A Ameil, F.
%A Arici, T.
%A Ataç, A.
%A Barrientos, D.
%A Bazzacco, D.
%A Bednarczyk, P.
%A Benzoni, G.
%A Birkenbach, B.
%A Blasi, N.
%A Boston, H.C.
%A Bottoni, S.
%A Brambilla, S.
%A Bruyneel, B.
%A Ciemała, M.
%A Clément, E.
%A Cortés, M.L.
%A Crespi, F.C.L.
%A Cullen, D.M.
%A Curien, D.
%A Didierjean, F.
%A Domingo-Pardo, C.
%A Duchêne, G.
%A Eberth, J.
%A Görgen, A.
%A Gadea, A.
%A Gerl, J.
%A Goel, N.
%A Golubev, P.
%A González, V.
%A Górska, M.
%A Gottardo, A.
%A Gregor, E.
%A Guastalla, G.
%A Habermann, T.
%A Harkness-Brennan, L.J.
%A Jungclaus, A.
%A Kmiecik, M.
%A Kojouharov, I.
%A Korten, W.
%A Kurz, N.
%A Labiche, M.
%A Lalović, N.
%A Leoni, S.
%A Lettmann, M.
%A Maj, A.
%A Menegazzo, R.
%A Mengoni, D.
%A Merchan, E.
%A Million, B.
%A Morales, A.I.
%A Napoli, D.R.
%A Nociforo, C.
%A Nyberg, J.
%A Pietralla, N.
%A Pietri, S.
%A Podolyák, Zs.
%A Ponomarev, V.Yu.
%A Pullia, A.
%A Quintana, B.
%A Rainovski, G.
%A Ralet, D.
%A Recchia, F.
%A Reese, M.
%A Regan, P.
%A Reiter, P.
%A Riboldi, S.
%A Rudolph, D.
%A Salsac, M.D.
%A Sanchis, E.
%A Sarmiento, L.G.
%A Schaffner, H.
%A Simpson, J.
%A Stezowski, O.
%A Valiente-Dobón, J.J.
%A Wollersheim, H.J.
%D 2020
%J Physics Letters B
%K myown reiter
%P 135951
%R https://doi.org/10.1016/j.physletb.2020.135951
%T Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number
%U https://www.sciencedirect.com/science/article/pii/S0370269320307541
%V 811
%X 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.
@article{AVIGO2020135951,
abstract = {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.},
added-at = {2022-03-30T10:35:48.000+0200},
author = {Avigo, R. and Wieland, O. and Bracco, A. and Camera, F. and Ameil, F. and Arici, T. and Ataç, A. and Barrientos, D. and Bazzacco, D. and Bednarczyk, P. and Benzoni, G. and Birkenbach, B. and Blasi, N. and Boston, H.C. and Bottoni, S. and Brambilla, S. and Bruyneel, B. and Ciemała, M. and Clément, E. and Cortés, M.L. and Crespi, F.C.L. and Cullen, D.M. and Curien, D. and Didierjean, F. and Domingo-Pardo, C. and Duchêne, G. and Eberth, J. and Görgen, A. and Gadea, A. and Gerl, J. and Goel, N. and Golubev, P. and González, V. and Górska, M. and Gottardo, A. and Gregor, E. and Guastalla, G. and Habermann, T. and Harkness-Brennan, L.J. and Jungclaus, A. and Kmiecik, M. and Kojouharov, I. and Korten, W. and Kurz, N. and Labiche, M. and Lalović, N. and Leoni, S. and Lettmann, M. and Maj, A. and Menegazzo, R. and Mengoni, D. and Merchan, E. and Million, B. and Morales, A.I. and Napoli, D.R. and Nociforo, C. and Nyberg, J. and Pietralla, N. and Pietri, S. and Podolyák, Zs. and Ponomarev, V.Yu. and Pullia, A. and Quintana, B. and Rainovski, G. and Ralet, D. and Recchia, F. and Reese, M. and Regan, P. and Reiter, P. and Riboldi, S. and Rudolph, D. and Salsac, M.D. and Sanchis, E. and Sarmiento, L.G. and Schaffner, H. and Simpson, J. and Stezowski, O. and Valiente-Dobón, J.J. and Wollersheim, H.J.},
biburl = {https://www.bibsonomy.org/bibtex/20be61caf61042c5c2bed67797ed7c7ba/ikpcologne},
description = {Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number - ScienceDirect},
doi = {https://doi.org/10.1016/j.physletb.2020.135951},
interhash = {a50b57652a78c14cee23b99e979409c7},
intrahash = {0be61caf61042c5c2bed67797ed7c7ba},
issn = {0370-2693},
journal = {Physics Letters B},
keywords = {myown reiter},
pages = 135951,
timestamp = {2022-03-30T10:35:48.000+0200},
title = {Low-lying electric dipole γ-continuum for the unstable 62,64Fe nuclei: Strength evolution with neutron number},
url = {https://www.sciencedirect.com/science/article/pii/S0370269320307541},
volume = 811,
year = 2020
}