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1.
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Evidence for spherical-oblate shape coexistence in $^{87}\mathrm{Tc}$
/ Liu, X (Stockholm, Res. Inst. Atomic Phys. ; Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Cederwall, B (Stockholm, Res. Inst. Atomic Phys.) ; Qi, C (Stockholm, Res. Inst. Atomic Phys.) ; Wyss, R A (Stockholm, Res. Inst. Atomic Phys.) ; Aktas, Ö (Stockholm, Res. Inst. Atomic Phys.) ; Ertoprak, A (Stockholm, Res. Inst. Atomic Phys. ; Istanbul U.) ; Zhang, W (Stockholm, Res. Inst. Atomic Phys.) ; Clément, E (GANIL) ; de France, G (GANIL) ; Ralet, D (CSNSM, Orsay) et al.
Excited states in the neutron-deficient nucleus $^{87}$Tc have been studied via the fusion-evaporation reaction $^{54}$Fe($^{36}$Ar, 2$n$1p) $^{87}$Tc at 115 MeV beam energy. The AGATA γ -ray spectrometer coupled to the DIAMANT, NEDA, and Neutron Wall detector arrays for light-particle detection was used to measure the prompt coincidence of $\gamma$ rays and light particles. [...]
2022 - 6 p.
- Published in : Phys. Rev. C 106 (2022) 034304
Fulltext: PDF;
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2.
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Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
/ Liu, X. (Royal Inst. Tech., Stockholm ; Beijing, GUCAS ; Lanzhou, Inst. Modern Phys.) ; Cederwall, B. (Royal Inst. Tech., Stockholm) ; Qi, C. (Royal Inst. Tech., Stockholm) ; Wyss, R.A. (Royal Inst. Tech., Stockholm) ; Aktas, Ö. (Royal Inst. Tech., Stockholm) ; Ertoprak, A. (Royal Inst. Tech., Stockholm) ; Zhang, W. (Royal Inst. Tech., Stockholm) ; Clément, E. (GANIL) ; de France, G. (GANIL) ; Ralet, D. (CSNSM, Orsay) et al.
The low-lying excited states in the neutron-deficient $N=Z+1$ nucleus $^{87}_{43}$Tc$^{\ }_{44}$ have been studied via the fusion-evaporation reaction $^{54}$Fe($^{36}$Ar, $2n1p$)$^{87}$Tc at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt $\gamma$-rays, neutrons, and charged particles emitted in the reaction. [...]
arXiv:2109.06292.-
2021-08-20 - 5 p.
- Published in : Phys. Rev. C 104 (2021) L021302
Fulltext: PhysRevC.104.L021302 - PDF; 2109.06292 - PDF;
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3.
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Low-lying electric dipole $γ$-continuum for the unstable $^{62,64}$Fe nuclei: Strength evolution with neutron number
/ Avigo, R (INFN, Milan ; Milan U.) ; Wieland, O (INFN, Milan) ; Bracco, A (INFN, Milan ; Milan U.) ; Camera, F (INFN, Milan ; Milan U.) ; Ameil, F (Darmstadt, GSI) ; Arici, T (Darmstadt, GSI) ; Ataç, A (Royal Inst. Tech., Stockholm) ; Barrientos, D (CERN) ; Bazzacco, D (INFN, Padua) ; Bednarczyk, P (Cracow, INP) et al.
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. [...]
2020 - 6 p.
- Published in : Phys. Lett. B 811 (2020) 135951
Fulltext from publisher: PDF;
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4.
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Manifestation of the Berry phase in the atomic nucleus $^{213}$Pb
/ Valiente-Dobón, J.J. (INFN, Legnaro) ; Gottardo, A. (INFN, Legnaro) ; Benzoni, G. (INFN, Milan) ; Gadea, A. (Valencia U., IFIC) ; Lunardi, S. (Padua U. ; INFN, Padua) ; Algora, A. (Valencia U., IFIC) ; de Angelis, G. (INFN, Legnaro) ; Bazzacco, D. (INFN, Padua) ; Benlliure, J. (Santiago de Compostela U., IGFAE) ; Boutachkov, P. (Darmstadt, GSI) et al.
The neutron-rich $^{213}$Pb isotope was produced in the fragmentation of a primary 1 GeV $A$ $^{238}$U beam, separated in FRS in mass and atomic number, and then implanted for isomer decay $\gamma$-ray spectroscopy with the RISING setup at GSI. A newly observed isomer and its measured decay properties indicate that states in $^{213}$Pb are characterized by the seniority quantum number that counts the nucleons not in pairs coupled to angular momentum $J=0$. [...]
arXiv:2010.14859.-
2021-05-10 - 7 p.
- Published in : Phys. Lett. B 816 (2021) 136183
Article from SCOAP3: PDF; Fulltext: PDF;
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5.
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Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the $\pi (p_{3/2})\rightarrow \pi (p_{1/2})$ spin-flip transition in $^{85}$Br
/ Napiralla, P (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Lettmann, M (Darmstadt, Tech. Hochsch.) ; Stahl, C (Darmstadt, Tech. Hochsch.) ; Rainovski, G (Sofiya U.) ; Pietralla, N (Darmstadt, Tech. Hochsch.) ; Afara, S (King Saud U.) ; Ameil, F (Darmstadt, GSI) ; Arici, T (Darmstadt, GSI) ; Aydin, S (Aksaray U.) ; Barrientos, D (CERN) et al.
A first performance test of the Coulomb excitation multipolarimetry (Coulex-multipolarimetry) method is presented. It is based on a $^{85}\hbox {Br}\,\pi p_{3/2}\rightarrow \pi p_{1/2}$ spin-flip experiment performed as part of the PreSPEC-AGATA campaign at the GSI Helmholtzzentrum für Schwerionenforschung (GSI). [...]
2020 - 10 p.
- Published in : Eur. Phys. J. A 56 (2020) 147
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6.
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Isospin Properties of Nuclear Pair Correlations From the Level Structure of the Self-Conjugate Nucleus $^{88}$Ru
/ Cederwall, B (Royal Inst. Tech., Stockholm) ; Liu, X (Royal Inst. Tech., Stockholm) ; Aktas, Ö (Royal Inst. Tech., Stockholm) ; Ertoprak, A (Royal Inst. Tech., Stockholm ; Istanbul U.) ; Zhang, W (Royal Inst. Tech., Stockholm) ; Qi, C (Royal Inst. Tech., Stockholm) ; Clément, E (GANIL) ; de France, G (GANIL) ; Ralet, D (CSNSM, Orsay) ; Gadea, A (Valencia U., IFIC) et al.
The low-lying energy spectrum of the extremely neutron-deficient self-conjugate ($N$=Z) nuclide $^{88}_{44}$Ru$_{44}$ has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in $^{88}$Ru were populated via the $^{54}$Fe($^{36}$Ar,2n$γ$)$^{88}$Ru* fusion-evaporation reaction at the Grand Accélérateur National d’Ions Lourds (GANIL) accelerator complex. [...]
2020 - 6 p.
- Published in : Phys. Rev. Lett. 124 (2020) 062501
Fulltext from Publisher: PDF;
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7.
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Cluster-transfer reactions with radioactive beams: A spectroscopic tool for neutron-rich nuclei
/ Bottoni, S (Milan U. ; INFN, Milan ; Leuven U.) ; Leoni, S (Milan U. ; INFN, Milan) ; Fornal, B (Cracow, INP) ; Raabe, R (Leuven U.) ; Rusek, K (Warsaw U., Heavy Ion Lab) ; Benzoni, G (INFN, Milan) ; Bracco, A (Milan U. ; INFN, Milan) ; Crespi, F C L (Milan U. ; INFN, Milan) ; Morales, A I (INFN, Milan) ; Bednarczyk, P (Cracow, INP) et al.
An exploratory experiment performed at REX-ISOLDE to investigate cluster-transfer reactions with radioactive beams in inverse kinematics is presented. The aim of the experiment was to test the potential of cluster-transfer reactions at the Coulomb barrier as a mechanism to explore the structure of exotic neutron-rich nuclei. [...]
APS, 2015 - 8 p.
- Published in : Phys. Rev. C 92 (2015) 024322
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8.
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Testing ab initio nuclear structure in neutron-rich nuclei: lifetime measurements of second 2$^+$ states in $^{16}$C and $^{20}$O
/ Ciemala, M. (Cracow, INP) ; Ziliani, S. (Milan U. ; INFN, Milan) ; Crespi, F.C.L. (Milan U. ; INFN, Milan) ; Leoni, S. (Milan U. ; INFN, Milan) ; Fornal, B. (Cracow, INP) ; Maj, A. (Cracow, INP) ; Bednarczyk, P. (Cracow, INP) ; Benzoni, G. (INFN, Milan) ; Bracco, A. (Milan U. ; INFN, Milan) ; Boiano, C. (INFN, Milan) et al.
To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2+ state in neutron-rich 20O, tau(2+_2 ) = 150(+80-30) fs, and an estimate for the lifetime of the second 2+ state in 16C have been obtained, for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds femtoseconds range, by analyzing the Doppler-shifted gamma-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction 18O (7.0 MeV/u) + 181Ta. [...]
arXiv:2002.04814.-
2020-02-28 - 7 p.
- Published in : Phys. Rev. C 101 (2020) 021303
Fulltext: PDF; Published fulltext: PhysRevC.101.021303 - PDF; 0144fdb9ec521f98f02c56efc9fa40a9 - PDF;
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9.
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New spectroscopic information on $^{211,213}\mathrm{Tl}$: A changing structure beyond the $N=126$ shell closure
/ Gottardo, A (INFN, Legnaro ; Padua U.) ; Valiente-Dobón, J J (INFN, Legnaro) ; Benzoni, G (INFN, Milan) ; Morales, A I (INFN, Milan) ; Gadea, A (Valencia U., IFIC) ; Lunardi, S (Padua U. ; INFN, Padua) ; Boutachkov, P (Darmstadt, GSI) ; Bruce, A M (Brighton U.) ; Górska, M (Darmstadt, GSI) ; Grebosz, J (Cracow, INP) et al.
The neutron-rich isotopes $^{211,213}\mathrm{Tl}$, beyond the $N=126$ shell closure, have been studied for the first time in isomer $\gamma$-ray decay, exploiting the fragmentation of a primary uranium beam at the Fragment Separator-Rare Isotopes Investigation at GSI setup. The observed isomeric states in $^{211,213}\mathrm{Tl}$ show a deviation from the seniority-like scheme of $^{209}\mathrm{Tl}$. [...]
2019 - 7 p.
- Published in : Phys. Rev. C 99 (2019) 054326
Article from SCOAP3: PDF;
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10.
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Pairing-quadrupole interplay in the neutron-deficient tin nuclei: first lifetime measurements of low-lying states in $^{106,108}$Sn
/ Siciliano, M. (INFN, Legnaro ; Padua U. ; IRFU, Saclay) ; Valiente-Dobón, J.J. (INFN, Legnaro) ; Goasduff, A. (INFN, Legnaro ; Padua U. ; INFN, Padua) ; Nowacki, F. (Strasbourg, IPHC) ; Zuker, A.P. (Strasbourg, IPHC) ; Bazzacco, D. (INFN, Padua) ; Lopez-Martens, A. (CSNSM, Orsay) ; Clément, E. (GANIL) ; Benzoni, G. (INFN, Milan) ; Braunroth, T. (Cologne U.) et al.
The lifetimes of the low-lying excited states $2^+$ and $4^+$ have been directly measured in the neutron-deficient $^{106,108}$Sn isotopes. The nuclei were populated via a deep-inelastic reaction and the lifetime measurement was performed employing a differential plunger device. [...]
arXiv:1905.10313.-
2020-07-10 - 6 p.
- Published in : Phys. Lett. B 806 (2020) 135474
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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