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Intruder configurations in $^{29}$Ne at the transition into the island of inversion: Detailed structure study of $^{28}$Ne
/ Wang, H. (RIKEN (main)) ; Yasuda, M. (Tokyo Inst. Tech.) ; Kondo, Y. (Tokyo Inst. Tech.) ; Nakamura, T. (Tokyo Inst. Tech.) ; Tostevin, J.A. (Tokyo Inst. Tech. ; Surrey U.) ; Ogata, K. (Kyushu U., Fukuoka (main) ; Osaka U., Res. Ctr. Nucl. Phys.) ; Otsuka, T. (CERN ; Nishina Ctr., RIKEN) ; Poves, A. (Madrid, Autonoma U.) ; Shimizu, N. (Tsukuba U.) ; Yoshida, K. (JAEA, Ibaraki) et al.
Detailed $\gamma$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for the first time using the one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $^{28}$Ne and the negative-parity states are identified for the first time. [...]
arXiv:2306.16189.-
2023-06-20 - 11 p.
- Published in : Phys. Lett. B 843 (2023) 138038
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Normal and intruder configurations in $^{34}$Si populated in the $\beta^-$ decay of $^{34}$Mg and $^{34}$Al
/ IDS Collaboration
The structure of $^{34}$Si was studied through $\gamma$ spectroscopy separately in the $\beta^-$ decays of $^{34}$Mg and $^{34}$Al at the ISOLDE facility of CERN. Different configurations in $^{34}$Si were populated independently from the two recently identified $\beta$-decaying states in $^{34}$Al having spin-parity assignments $J^\pi = 4^-$ dominated by the normal configuration $\pi (d_{5/2})^{-1} \otimes \nu (f_{7/2})$ and $J^\pi = 1^+$ by the intruder configuration $\pi (d_{5/2})^{-1} \otimes \nu (d_{3/2})^{-1}(f_{7/2})^{2}$. [...]
arXiv:1908.11626.-
2019-09-12 - 11 p.
- Published in : Phys. Rev. C 100 (2019) 034306
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Transfer reactions induced with $^{56}$Ni: shell gaps and np pairing
/ Georgiadou, A (Orsay, IPN ; U. Paris-Sud 11, Dept. Phys., Orsay ; Paris, IN2P3) ; Assié, M (Orsay, IPN ; Paris, IN2P3) ; Blumenfeld, Y ; Crom, B Le ; Guillot, J ; Flavigny, F ; Achouri, L ; Aouadi, M ; Bastin, B ; Benitez, A et al.
The structure of the unstable doubly magic nucleus $^{56}$Ni has been investigated by measuring one-and two-nucleon transfer reactions. The radioactive beam of $^{56}$Ni was produced at GANIL-Caen, France at 30 MeV/u by means of the LISE spectrometer. [...]
Geneva : CERN, 2019 - 6 p.
- Published in : CERN Proc. (2019) , pp. 95-100
Fulltext: PDF;
In : 15th International Conference on Nuclear Reaction Mechanisms, Varenna, Italy, 11 - 15 Jun 2018, pp.95-100
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First Accurate Normalization of the $\beta$-delayed $\alpha$ Decay of $^{16}$N and Implications for the $^{12}$C$(\alpha,\gamma)^{16}$O Astrophysical Reaction Rate
/ Kirsebom, O.S. (Aarhus U.) ; Tengblad, O. (CSIC, Madrid) ; Lica, R. (CERN ; Bucharest, IFIN-HH) ; Munch, M. (Aarhus U.) ; Riisager, K. (Aarhus U.) ; Fynbo, H.O.U. (Aarhus U.) ; Borge, M.J.G. (CSIC, Madrid ; CERN) ; Madurga, M. (CERN) ; Marroquin, I. (CSIC, Madrid) ; Andreyev, A.N. (York U., England) et al.
The $^{12}\text{C}(\alpha,\gamma){}^{16}\text{O}$ reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced $\alpha$ width, $\gamma_{11}$, of the bound $1^-$ level in $^{16}$O is particularly important to determine the cross section. [...]
arXiv:1804.02040.-
2018-10-10 - 6 p.
- Published in : Phys. Rev. Lett. 121 (2018) 142701
Fulltext: PDF; Fulltext from Publisher: PDF;
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Improved experimental determination of the branching ratio for $\beta$-delayed $\alpha$ decay of $^{16}$N
/ Kirsebom, Oliver S (Aarhus U.) ; Alonso, Irene M (CSIC, Madrid) ; Berry, Tom (Surrey U.) ; Borge, Maria J G (CERN) ; Christensen, Esben R (Aarhus U.) ; Doherty, Daniel (York U., England) ; Fernández, Paloma D (Chalmers U. Tech.) ; Flores, Miguel M (CERN) ; Fynbo, Hans O U (Aarhus U.) ; Gallardo, Mariano C (UCM, Madrid, Dept. Phys.) et al.
We report on the preliminary results of an experimental study of the $\beta$ decay of $^{16}$N, aiming to determine the branching ratio of the $\beta\alpha$ channel with a precision of $\leq$ 5%..
2017 - 4 p.
- Published in : EPJ Web Conf. 165 (2017) 01031
Fulltext: PDF;
In : 8th Nuclear Physics in Astrophysics, Catania, Italy, June 18-23, 2017, pp.01031
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Identification of the crossing point at $N=21$ between normal and intruder configurations
/ Lică, R (CERN ; Bucharest, IFIN-HH) ; Rotaru, F (Bucharest, IFIN-HH) ; Borge, M J G (CERN ; Madrid, Inst. Estructura Materia) ; Grévy, S (GANIL ; CENBG, Gradignan) ; Negoiţă, F (Bucharest, IFIN-HH) ; Poves, A (Madrid, Autonoma U.) ; Sorlin, O (GANIL) ; Andreyev, A N (York U., England) ; Borcea, R (Bucharest, IFIN-HH) ; Costache, C (Bucharest, IFIN-HH) et al.
/IDS
The β− decay of Mg34 was used to study the Al34 nucleus through γ spectroscopy at the Isotope Separator On-Line facility of CERN. Previous studies identified two β-decaying states in Al34 having spin-parity assignments Jπ=4− dominated by the normal configuration π(d5/2)−1⊗ν(f7/2) and Jπ=1+ by the intruder configuration π(d5/2)−1⊗ν(d3/2)−1(f7/2)2. [...]
2017 - 6 p.
- Published in : Phys. Rev. C 95 (2017) 021301
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Spectroscopy of $^{46}$Ar by the $(t,p)$ two-neutron transfer reaction
/ Nowak, K. (Munich, Tech. U.) ; Wimmer, K. (Munich, Tech. U. ; Tokyo U.) ; Hellgartner, S. (Munich, Tech. U.) ; Mücher, D. (Munich, Tech. U.) ; Bildstein, V. (Munich, Tech. U. ; Guelph U.) ; Diriken, J. (KU Leuven, Dept. Phys. Astron.) ; Elseviers, J. (KU Leuven, Dept. Phys. Astron.) ; Gaffney, L.P. (Liverpool U.) ; Gernhäuser, R. (Munich, Tech. U.) ; Iwanicki, J. (Warsaw U., Heavy Ion Lab) et al.
States in the $N=28$ nucleus $^{46}$Ar have been studied by a two-neutron transfer reaction at REX-ISOLDE (CERN). A beam of radioactive $^{44}$ at an energy of 2.16~AMeV and a tritium loaded titanium target were used to populate $^{46}$ by the t($^{44}$,p) two-neutron transfer reaction. [...]
arXiv:1604.04014.-
2016-04-27 - 10 p.
- Published in : Phys. Rev. C 93 (2016) 044335
Fulltext: PDF; External link: Preprint
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