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Direct proton transfer on $^{46}$Ar supports the presence of a charge density bubble linked to a novel nuclear structure below $^{48}$Ca
/ Brugnara, Daniele (INFN, Padua ; INFN, Legnaro) ; Gottardo, Andrea (INFN, Legnaro) ; Assiè, Marlene (IJCLab, Orsay) ; Barbieri, Carlo (Milan U. ; INFN, Milan) ; Mengoni, Daniele (INFN, Padua) ; Beaumel, Didier (IJCLab, Orsay) ; Brolli, Stefano (Milan U. ; INFN, Milan) ; Bottoni, Simone (Milan U. ; INFN, Milan) ; Clement, Emmanuel (GANIL) ; Colò, Gianluca (Milan U. ; INFN, Milan) et al.
The $^{46}$Ar($^3$He,d)$^{47}$K reaction was performed in inverse kinematics using a radioactive $^{46}$Ar beam produced by the SPIRAL1 facility at GANIL and a cryogenic $^{3}$He target. [...]
arXiv:2506.23228.
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Impact of Newly Measured <math display="inline"><mi>β</mi></math>-Delayed Neutron Emitters around <math display="inline"><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts/><none/><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math> on Light Element Nucleosynthesis in the Neutrino Wind Following a Neutron Star Merger
/ Tolosa-Delgado, A. (CSIC, Madrid ; CERN ; Jyvaskyla U.) ; Tain, J.L. ; Reichert, M. ; Arcones, A. ; Eichler, M. ; Rasco, B.C. ; Brewer, N.T. ; Rykaczewski, K.P. ; Yokoyama, R. ; Grzywacz, R. et al.
Neutron emission probabilities and half-lives of 37 beta-delayed neutron emitters from 75Ni to 92Br were measured at the RIKEN Nishina Center in Japan, including 11 one-neutron and 13 two-neutron emission probabilities and 6 half-lives measured for the first time, which supersede theoretical estimates. These nuclei lie in the path of the weak r-process occurring in neutrino-driven winds from the accretion disk formed after the merger of two neutron stars, synthesizing elements in the A~80 abundance peak. [...]
arXiv:2504.06008.-
2025-05-01 - 11 p.
- Published in : Phys. Rev. Lett. 134 (2025) 172701
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Shape evolution in even-mass $^{98-104}$Zr isotopes via lifetime measurements using the $\gamma \gamma $-coincidence technique
/ Pasqualato, G. (IJCLab, Orsay) ; Ansari, S. (IRFU, Saclay) ; Heines, J.S. (Oslo U.) ; Modamio, V. (Oslo U.) ; Görgen, A. (Oslo U.) ; Korten, W. (IRFU, Saclay) ; Ljungvall, J. (IJCLab, Orsay ; Strasbourg, IPHC) ; Clément, E. (GANIL) ; Dudouet, J. (IP2I, Lyon) ; Lemasson, A. (GANIL) et al.
The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first $2^+$ state and the increase in the transition strength B(E2; $2_1^\rightarrow 0_1^+$ going from $^{98}$Zr to $^{100}$Zr has been the first example of "quantum phase transition" in nuclear shapes, which has few equivalents in the nuclear chart. [...]
arXiv:2410.17004.-
2023-11-21 - 13 p.
- Published in : Eur. Phys. J. A 59 (2023) 276
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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
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Evidence of Partial Seniority Conservation in the $\pi{g}_{9/2}$ Shell for the $N=50$ Isotones
/ Pérez-Vidal, R M (Valencia U., IFIC ; INFN, Legnaro) ; Gadea, A (Valencia U., IFIC) ; Domingo-Pardo, C (Valencia U., IFIC) ; Gargano, A (INFN, Naples ; Carlos III U., Madrid) ; Valiente-Dobón, J J (INFN, Legnaro) ; Clément, E (GANIL) ; Lemasson, A (GANIL) ; Coraggio, L (INFN, Naples ; Carlos III U., Madrid ; Napoli Seconda U.) ; Siciliano, M (Argonne, PHY) ; Szilner, S (Boskovic Inst., Zagreb) et al.
The reduced transition probabilities for the $4^+_1 \to 2^+_1$ and $2^+_1 \to 0^+_1$ transitions in $^{92}$Mo and $^{94}$Ru and for the $4^+_1 \to 2^+_1$ and $6^+_1 \to 4^+_1$ transitions in $^{90}$Zr have been determined in this experiment making use of a multinucleon transfer reaction. These results have been interpreted on the basis of realistic shell-model calculations in the $f_{5/2}, p_{3/2}, p_{1/2},$ and $g_{9/2}$ proton valence space. [...]
2022 - 7 p.
- Published in : Phys. Rev. Lett. 129 (2022) 112501
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High-spin states of $^{218}$Th
/ O'Donnell, D (SUPA, UK ; Liverpool U. ; IIT, Roorkee) ; Page, R D (Liverpool U.) ; Grahn, T (Jyvaskyla U.) ; Ali, F A (Liverpool U. ; Sulaimaniya U.) ; Auranen, K (Jyvaskyla U.) ; Capponi, L (SUPA, UK) ; Carroll, R J (Liverpool U.) ; Chishti, M M R (SUPA, UK) ; Drummond, M C (Liverpool U.) ; Greenlees, P T (Jyvaskyla U.) et al.
High-spin states in the $N = 128$ nucleus $^{218}$Th have been investigated following fusion–evaporation reactions, using the recoil-decay tagging technique. Due to the short-lived nature of the ground state of $^{218}$Th prompt $\gamma$ rays have been correlated with the $\alpha$ decay of the daughter nucleus $^{214}$Ra. [...]
2020 - 12 p.
- Published in : J. Phys. G 47 (2020) 095103
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