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1.
Search for $^{22}$Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes / Fougères, Chloé (GANIL ; Argonne, PHY) ; de Oliveira Santos, François (GANIL) ; José, Jordi (Barcelona U. ; Barcelona, IEEC) ; Michelagnoli, Caterina (Laue-Langevin Inst.) ; Clément, Emmanuel (GANIL) ; Kim, Yung Hee (GANIL ; IBS, Daejeon, CENS) ; Lemasson, Antoine (GANIL) ; Guimarães, Valdir (Sao Paulo U.) ; Barrientos, Diego (CERN) ; Bemmerer, Daniel (HZDR, Dresden) et al.
Classical novae are thermonuclear explosions in stellar binary systems, and important sources of $^{26}$Al and $^{22}$Na. While gamma rays from the decay of the former radioisotope have been observed throughout the Galaxy, $^{22}$Na remains untraceable. [...]
arXiv:2212.06302.- 2023-09-05 - 18 p. - Published in : Nature Commun. 14 (2023) 4536 Fulltext: document - PDF; 2212.06302 - PDF;
2.
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;
3.
Reinterpretation of excited states in $^{212}$Po: Shell-model multiplets rather than $\alpha$-cluster states / Fernández, A (CSIC, Madrid) ; Jungclaus, A (CSIC, Madrid) ; Golubev, P (Lund U.) ; Rudolph, D (Lund U.) ; Sarmiento, L G (Lund U.) ; Gargano, A (INFN, Naples) ; Naïdja, H (Constantine U.) ; Astier, A (IJCLab, Orsay) ; Dupont, E (IJCLab, Orsay) ; Gadea, A (Valencia U., IFIC) et al.
A $\gamma$ -ray spectroscopic study of $^{212}$Po was performed at the Grand Accélérateur National d’Ions Lourds, using the inverse kinematics α-transfer reaction $^{12}$C($^{208}$Pb, $^{212}$Po) $^8$Be and the AGATA spectrometer. A careful analysis based on $\gamma \gamma$ coincidence relations allowed us to establish 14 new excited states in the energy range between 1.9 and 3.3 MeV. [...]
2021 - 19 p. - Published in : Phys. Rev. C 104 (2021) 054316 Fulltext: PDF;
4.
NEDA—NEutron Detector Array / Valiente-Dobón, J J (INFN, Legnaro) ; Jaworski, G (INFN, Legnaro) ; Goasduff, A (INFN, Legnaro ; Padua U. ; INFN, Padua) ; Egea, F J (INFN, Legnaro ; Padua U. ; INFN, Padua ; Valencia U., IFIC) ; Modamio, V (INFN, Legnaro ; Oslo U.) ; Hüyük, T (Valencia U., IFIC) ; Triossi, A (Padua U. ; INFN, Padua ; CERN) ; Jastrząb, M (Cracow, INP) ; Söderström, P A (ELI-NP, Bucharest) ; Di Nitto, A (Darmstadt, GSI ; Helmholtz Inst., Mainz) et al.
The NEutron Detector Array, NEDA, will form the next generation neutron detection system that has been designed to be operated in conjunction with γ -ray arrays, such as the tracking-array AGATA, to aid nuclear spectroscopy studies. NEDA has been designed to be a versatile device, with high-detection efficiency, excellent neutron- γ discrimination, and high rate capabilities. [...]
2019 - 6 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 927 (2019) 81-86
5.
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;
6.
The New Neutron Multiplicity Filter NEDA and Its First Physics Campaign with AGATA / Jaworski, G (INFN, Legnaro ; Warsaw U., Heavy Ion Lab) ; Goasduff, A (INFN, Legnaro ; Padua U. ; INFN, Padua) ; Egea Canet, F J (INFN, Legnaro ; Padua U. ; INFN, Padua ; Valencia U., IFIC) ; Modamio, V (INFN, Legnaro ; Oslo U.) ; Hüyük, T (Valencia U., IFIC) ; Triossi, A (Padua U. ; INFN, Padua ; CERN) ; Jastrząb, M (Cracow, INP) ; Söderström, P A (ELI-NP, Bucharest) ; Carturan, S M (Padua U. ; INFN, Padua) ; Di Nitto, A (Helmholtz Inst., Mainz ; Darmstadt, GSI) et al.
A new neutron multiplicity filter NEDA, after a decade of design, R&D; and construction, was employed in its first physics campaign with the AGATA spectrometer. Properties and performance of the array are discussed..
Acta Physica Polonica B Editorial Office, 2019 - 6 p. - Published in : Acta Phys. Pol. B 50 (2019) 585
In : Zakopane Conference on Nuclear Physics : Extremes of the Nuclear Landscape, Zakopane, Poland, 26 Aug - 2 Sep 2018, pp.585
7.
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;
8.
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;
9.
Lifetime measurements in $^{52,54}$Ti to study shell evolution toward $N=32$ / AGATA Collaboration
Lifetimes of the excited states in the neutron-rich Ti52,54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accélérateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the γ-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. [...]
2019 - 12 p. - Published in : Phys. Rev. C 100 (2019) 054317 Fulltext: PDF;
10.
Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich $^{122-131}$Sb$_{51}$ isotopes / Biswas, S. (GANIL) ; Lemasson, A. (GANIL) ; Rejmund, M. (GANIL) ; Navin, A. (GANIL) ; Kim, Y.H. (GANIL) ; Michelagnoli, C. (GANIL) ; Stefan, I. (Orsay, IPN) ; Banik, R. (Calcutta, VECC ; HBNI, Mumbai) ; Bednarczyk, P. (Cracow, INP) ; Bhattacharya, S. (Calcutta, VECC ; HBNI, Mumbai) et al.
The neutron-rich $^{122-131}$Sb isotopes were produced as fission fragments in the reaction $^{9}$Be($^{238}$U,~f) with 6.2 MeV/u beam energy. An unique setup, consisting of AGATA, VAMOS++ and EXOGAM detectors, was used which enabled the prompt-delayed gamma-ray ($\gamma$) spectroscopy of fission fragments in the time range of 100 ns - 200 $\mu$s. [...]
arXiv:1906.01245.- 2019-06-03 - 21 p. Fulltext: PDF;

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