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Probing exotic cross-shell interactions at $N=28$ with single-neutron transfer on $^{47}$K
/ Paxman, C.J. (Surrey U.) ; Matta, A. (LPC, Caen) ; Catford, W.N. (Surrey U.) ; Lotay, G. (Surrey U.) ; Assié, M. (IJCLab, Orsay) ; Clément, E. (GANIL) ; Lemasson, A. (GANIL) ; Ramos, D. (GANIL) ; Orr, N.A. (LPC, Caen) ; Galtarossa, F. (IJCLab, Orsay) et al.
We present the first measurement of the $^{47}$K($d,p\gamma$)$^{48}$K transfer reaction, performed in inverse kinematics using a reaccelerated beam of $^{47}$K. [...]
arXiv:2409.12594.
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High-Precision Spectroscopy of O20 Benchmarking Ab Initio Calculations in Light Nuclei
/ Zanon, I. (INFN, Legnaro ; Ferrara U.) ; Clément, E. (GANIL) ; Goasduff, A. (INFN, Legnaro) ; Menéndez, J. (ICC, Barcelona U.) ; Miyagi, T. (Darmstadt, Tech. U. ; Heidelberg, Max Planck Inst. ; Darmstadt, GSI) ; Assié, M. (IJCLab, Orsay) ; Ciemała, M. (Cracow, INP) ; Flavigny, F. (LPC, Caen) ; Lemasson, A. (GANIL) ; Matta, A. (LPC, Caen) et al.
The excited states of unstable $^{20}$O were investigated via $\gamma$-ray spectroscopy following the $^{19}$O$(d,p)^{20}$O reaction at 8 $A$MeV. By exploiting the Doppler Shift Attenuation Method, the lifetime of the 2$^+_2$ and 3$^+_1$ states were firmly established. [...]
arXiv:2405.14305.-
2023-12-28 - 7 p.
- Published in : Phys. Rev. Lett. 131 (2023) 262501
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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 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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The Development of Energy-Recovery Linacs
/ Adolphsen, Chris (SLAC) ; Andre, Kevin (CERN ; Liverpool U.) ; Angal-Kalinin, Deepa (Daresbury) ; Arnold, Michaela (Darmstadt, Tech. Hochsch.) ; Aulenbacher, Kurt (Helmholtz Inst., Mainz) ; Benson, Steve (Jefferson Lab) ; Bernauer, Jan (SUNY, Stony Brook) ; Bogacz, Alex (Jefferson Lab) ; Boonekamp, Maarten (Saclay) ; Brinkmann, Reinhard (DESY) et al.
Energy-recovery linacs (ERLs) have been emphasised by the recent (2020) update of the European Strategy for Particle Physics as one of the most promising technologies for the accelerator base of future high-energy physics. [...]
arXiv:2207.02095 ; FERMILAB-PUB-22-509-AD ; JLAB-ACP-22-3666.
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237 p.
Fermilab Library Server - JLab Document Server - Fulltext - Fulltext
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Spectroscopy of Neutron Induced Reactions with the $\nu $-ball Spectrometer
/ Jovančević, N (Orsay, IPN ; U. Paris-Saclay) ; Lebois, M (Orsay, IPN ; U. Paris-Saclay) ; Wilson, J N (Orsay, IPN ; U. Paris-Saclay) ; Thisse, D (Orsay, IPN ; U. Paris-Saclay) ; Qi, L (Orsay, IPN ; U. Paris-Saclay) ; Matea, I (Orsay, IPN ; U. Paris-Saclay) ; Ibrahim, F (Orsay, IPN ; U. Paris-Saclay) ; Verney, D (Orsay, IPN ; U. Paris-Saclay) ; Babo, M (Orsay, IPN ; U. Paris-Saclay) ; Delafosse, C (Orsay, IPN ; U. Paris-Saclay) et al.
The $\nu$-ball is a high-efficiency hybrid spectrometer which consists of both germanium (Ge) detectors and associated anti-Compton BGO shields, coupled to lanthanum bromide (LaBr$_3$) detectors. The hybrid configuration provides a combination of both excellent energy and timing resolutions. [...]
Acta Physica Polonica B Editorial Office, 2019 - 8 p.
- Published in : Acta Phys. Pol. B 50 (2019) 297
In : Zakopane Conference on Nuclear Physics : Extremes of the Nuclear Landscape, Zakopane, Poland, 26 Aug - 2 Sep 2018, pp.297
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The Large Hadron-Electron Collider at the HL-LHC
/ FCC-he Study Group Collaboration
The Large Hadron electron Collider, LHeC, is the means to move deep inelastic physics following HERA to the energy frontier of particle physics as it is being exploited by the HL-LHC. The paper presents a thorough update of the initial LHeC Conceptual Design Report (CDR) published in 2012. [...]
arXiv:2007.14491; CERN-ACC-Note-2020-0002; JLAB-ACP-20-3180.-
Geneva : CERN, 2021-12-20 - 364 p.
- Published in : J. Phys. G 48 (2021) 110501
Fulltext: arXiv:2007.14491 - PDF; 2007.14491 - PDF; Fulltext from Publisher: PDF; Preprint: PDF; External link: JLab Document Server
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Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the $^{78}$Ni Region: A Hint from Lifetime Measurements
/ Delafosse, C (Orsay, IPN) ; Verney, D (Orsay, IPN) ; Marević, P (Orsay, IPN ; CEA DAM) ; Gottardo, A (Orsay, IPN) ; Michelagnoli, C (GANIL) ; Lemasson, A (GANIL) ; Goasduff, A (INFN, Legnaro) ; Ljungvall, J (CSNSM, Orsay) ; Clément, E (GANIL) ; Korichi, A (CSNSM, Orsay) et al.
Lifetime measurements of excited states of the light $N=52$ isotones $^{88}$Kr, $^{86}$Se, and $^{84}$Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities $B(E2;2^+ \rightarrow 0^+)$ and $B(E2;4^+ \rightarrow 2^+)$ were obtained for the first time for the hard-to-reach $^{84}$Ge. [...]
2018 - 7 p.
- Published in : Phys. Rev. Lett. 121 (2018) 192502
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$_{36}^{96}$Kr$_{60}$–low-$Z$ boundary of the island of deformation at $N=60$
/ Dudouet, J (Lyon, IPN) ; Lemasson, A (GANIL) ; Duchêne, G (Strasbourg, IPHC) ; Rejmund, M (GANIL) ; Clément, E (GANIL) ; Michelagnoli, C (GANIL) ; Didierjean, F (Strasbourg, IPHC) ; Korichi, A (CSNSM, Orsay ; GANIL) ; Maquart, G (Lyon, IPN) ; Stezowski, O (Lyon, IPN) et al.
Prompt γ-ray spectroscopy of the neutron-rich 96Kr, produced in transfer- and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOSþþspectrometer. A second excited state, assigned to Jπ ¼ 4þ, is observed for the first time, and a previously reported level energy of the first 2þ excited state is confirmed. [...]
2017 - 6 p.
- Published in : Phys. Rev. Lett. 118 (2017) 162501
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Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities
/ Verney, D (Orsay, IPN) ; Testov, D (Orsay, IPN ; Dubna, JINR) ; Ibrahim, F (Orsay, IPN) ; Penionzhkevich, Yu (Dubna, JINR ; Moscow Phys. Eng. Inst.) ; Roussière, B (Orsay, IPN) ; Smirnov, V (Dubna, JINR) ; Didierjean, F (Strasbourg, IPHC) ; Flanagan, K (U. Manchester) ; Franchoo, S (Orsay, IPN) ; Kuznetsova, E (Dubna, JINR) et al.
We report on the β-delayed neutron emission probability (P1n) measurements of the Ga82,83,84 (N=51,52,53) precursors performed in one single experiment using the He3 neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three A=82,83, and 84 Ga precursors point towards a sizable P1n staggering in the N=50 region, similar to the one already observed just after the N=28 shell closure in the K isotopes chain, hinting at a similar mechanism. [...]
2017 - 14 p.
- Published in : Phys. Rev. C 95 (2017) 054320
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