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200 results on '"Ralet, D."'

1. High-resolution spectroscopy of neutron-rich Br isotopes and signatures for a prolate-to-oblate shape transition at N=56

Author

Dudouet, J., Colombi, G., Tello, D. Reygadas, Michelagnoli, C., Dao, D. D., Nowacki, F., Abushawish, M., Clément, E., Costache, C., Duchêne, G., Kandzia, F., Lemasson, A., Marginean, N., Marginean, R., Mihai, C., Pascu, S., Rejmund, M., Rezynkina, K., Stezowski, O., Turturica, A., Ujeniuc, S., Astier, A., de Angelis, G., de France, G., Delafosse, C., Deloncle, I., Gadea, A., Gottardo, A., Jones, P., Konstantinopoulos, T., Kuti, I., Blanc, F. Le, Lenzi, S. M., Lozeva, R., Million, B., Pérez-Vidal, R. M., Petrache, C. M., Ralet, D., Redon, N., Schmitt, C., Sohler, D., and Verney, D.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The first systematic experimental study of the neutron-rich Br isotopes with two complementary state-of-the-art techniques is presented. These isotopes have been populated in the fission process at two different facilities, GANIL and ILL. New spectroscopic information has been obtained for odd-even $^{87-93}$Br isotopes and the experimental results have been compared with state-of-the-art Large-Scale Shell-Model and DNO Shell-Model calculations. As a result of such theoretical approaches, a transition from prolate ($^{87,89}$Br) to oblate ($^{91,93}$Br) shapes is obtained from the subtle balance between proton and neutron quadrupole deformations, as a clear signature of pseudo-SU3 quadrupole regime., Comment: 17 pages, 24 figures, 5 tables

Published
2024

2. Ultra-Low Background Germanium Assay at the Boulby Underground Laboratory

Author

Scovell, P. R., Meehan, E., Paling, S. M., Thiesse, M., Liu, X., Ghag, C., Ginsz, M., Quirin, P., and Ralet, D.

Subjects
Physics - Instrumentation and Detectors
Abstract

As we move to an era where next generation low-background particle physics experiments begin to be designed and constructed, the ability to assay materials with high sensitivity and at speed with a variety of techniques will be key. This paper describes the Mirion Technologies (Canberra) specialty ultra-low background detectors installed and commissioned at the Boulby Underground Laboratory between 2017 and 2021. The low background levels of the detectors combine with low background shielding and a radon-reduced dry nitrogen purge system to give sensitivity approaching the best in the world without the need for intricate shielding solutions. For an optimised sample geometry, run for 100 days, it would be possible to reach close to 10 $\mu$Bq/kg ($10^{-12}$ g/g) for background isotopes of interest in neutrinoless double-beta decay.

Published
2023
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3. Search for $^{22}$Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes

Author

Fougères, C., Santos, F. de Oliveira, José, J., Michelagnoli, C., Clément, E., Kim, Y. H., Lemasson, A., Guimaraes, V., Barrientos, D., Bemmerer, D., Benzoni, G., Boston, A. J., Bottger, R., Boulay, F., Bracco, A., Celikovic, I., Cederwall, B., Ciemala, M., Delafosse, C., Domingo-Pardo, C., Dudouet, J., Eberth, J., Fulop, Z., Gonzalez, V., Goupil, J., Hess, H., Jungclaus, A., Kaskas, A., Korichi, A., Lenzi, S. M., Leoni, S., Li, H., Ljungvall, J., Lopez-Martens, A., Menegazzo, R., Mengoni, D., Million, B., Mrazek, J., Napoli, D. R., Navin, A., Nyberg, J., Podolyak, Zs., Pullia, A., Quintana, B., Ralet, D., Redon, N., Reiter, P., Rezynkina, K., Saillant, F., Salsac, M. D., Sanchez-Benitez, A. M., Sanchis, E., Senyigit, M., Siciliano, M., Smirnova, N. A., Sohler, D., Stanoiu, M., Theisen, Ch., Valiente-Dobon, J. J., Ujic, P., and Zielinska, M.

Subjects
Nuclear Experiment, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

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. The half-life of $^{22}$Na (2.6 yr) would allow the observation of its 1.275 MeV gamma-ray line from a cosmic source. However, the prediction of such an observation requires good knowledge of the nuclear reactions involved in the production and destruction of this nucleus. The $^{22}$Na($p,\gamma$)$^{23}$Mg reaction remains the only source of large uncertainty about the amount of $^{22}$Na ejected. Its rate is dominated by a single resonance on the short-lived state at 7785.0(7) keV in $^{23}$Mg. In the present work, a combined analysis of particle-particle correlations and velocity-difference profiles is proposed to measure femtosecond nuclear lifetimes. The application of this novel method to the study of the $^{23}$Mg states, combining magnetic and highly-segmented tracking gamma-ray spectrometers, places strong limits on the amount of $^{22}$Na produced in novae, explains its non-observation to date in gamma rays (flux < 2.5x$10^{-4}$ ph/(cm$^2$s)), and constrains its detectability with future space-borne observatories., Comment: 18 pages, 3 figures, 1 table

Published
2022
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4. $^{178}$Hg and asymmetric fission of neutron-deficient pre-actinides

Author

Jhingan, A., Schmitt, C., Lemasson, A., Biswas, S., Kim, Y. H., Ramos, D., Andreyev, A. N., Curien, D., Ciemala, M., Clément, E., Dorvaux, O., De Canditiis, B., Didierjean, F., Duchêne, G., Dudouet, J., Frankland, J., Frémont, G., Goupil, J., Jacquot, B., Raison, C., Ralet, D., Retailleau, B. -M., Stuttgé, L., Tsekhanovich, I., Andreev, A. V., Goriely, S., Hilaire, S., Lemaître, J-F., Möller, P., and Schmidt, K. -H.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Fission at low excitation energy is an ideal playground to probe the impact of nuclear structure on nuclear dynamics. While the importance of structural effects in the nascent fragments is well-established in the (trans-)actinide region, the observation of asymmetric fission in several neutron-deficient pre-actinides can be explained by various mechanisms. To deepen our insight into that puzzle, an innovative approach based on inverse kinematics and an enhanced version of the VAMOS++ heavy-ion spectrometer was implemented at the GANIL facility, Caen. Fission of $^{178}$Hg was induced by fusion of $^{124}$Xe and $^{54}$Fe. The two fragments were detected in coincidence using VAMOS++ supplemented with a new SEcond Detection arm. For the first time in the pre-actinide region, access to the pre-neutron mass and total kinetic energy distributions, and the simultaneous isotopic identification of one the fission fragment, was achieved. The present work describes the experimental approach, and discusses the pre-neutron observables in the context of an extended asymmetric-fission island located south-west of $^{208}Pb. A comparison with different models is performed, demonstrating the importance of this "new" asymmetric-fission island for elaborating on driving effects in fission.

Published
2022
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5. Structure of $^{83}$As, $^{85}$As and $^{87}$As: from semi-magicity to $\gamma$-softness

Author

Rezynkina, K., Dao, D. D., Duchene, G., Dudouet, J., Nowacki, F., Clement, E., Lemasson, A., Andreoiu, C., Astier, A., de Angelis, G., de France, G., Delafosse, C., Deloncle, I., Didierjean, F., Dombradi, Z., Ducoin, C., Gadea, A., Gottardo, A., Guinet, D., Jacquot, B., Jones, P., Konstantinopoulos, T., Kuti, I., Korichi, A., Lenzi, S. M., Li, G., Blanc, F. Le, Lizarazo, C., Lozeva, R., Maquart, G., Million, B., Michelagnoli, C., Napoli, D. R., Navin, A., Perez-Vidal, R. M., Petrache, C. M., Pietralla, N., Ralet, D., Ramdhane, M., Rejmund, M., Stezowski, O., Schmitt, C., Sohler, D., and Verney, D.

Subjects
Nuclear Experiment
Abstract

The structure of $^{83}$As, $^{85}$As and $^{87}$As have been studied in fusion-fission reaction $^{238}$U+$^9$Be. Fission fragments were identified in mass and atomic number using the VAMOS++ spectrometer and the coincident $\gamma$-rays were detected in the $\gamma$-ray tracking array AGATA. New transitions in $^{83}$As and $^{85}$As are reported and placed in the level schemes. A level scheme of the excited states in $^{87}$As is proposed for the first time. The data are interpreted in frame of Large-Scale Shell-Model calculations, SU3 symmetries and Beyond Mean-Field frameworks. A spherical regime at magic number $N$=50 is predicted and the location of the proton $g_{9/2}$ orbital is proposed for the first time. Development of collectivity in a prolate deformed, $\gamma$-soft regime in the open shell cases $^{85}$As and $^{87}$As, most neutron-rich isotopes beyond $N$=50, is concluded. Data and theoretical calculations give confidence to a relatively high extrapolated excitation energy about 4 MeV of the $9/2^+$ state in $^{79}$Cu, one proton above $^{78}$Ni.

Published
2022
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6. Shape evolution in even-mass 98-104γγZr isotopes via lifetime measurements using the 98-104γγ-coincidence technique

Author

Pasqualato, G., Ansari, S., Heines, J. S., Modamio, V., Görgen, A., Korten, W., Ljungvall, J., Clément, E., Dudouet, J., Lemasson, A., Rodríguez, T. R., Allmond, J. M., Arici, T., Beckmann, K. S., Bruce, A. M., Doherty, D., Esmaylzadeh, A., Gamba, E. R., Gerhard, L., Gerl, J., Georgiev, G., Ivanova, D. P., Jolie, J., Kim, Y.-H., Knafla, L., Korichi, A., Koseoglou, P., Labiche, M., Lalkovski, S., Lauritsen, T., Li, H.-J., Pedersen, L. G., Pietri, S., Ralet, D., Regis, J. M., Rudigier, M., Saha, S., Sahin, E., Siem, S., Singh, P., Söderström, P.-A., Theisen, C., Tornyi, T., Vandebrouck, M., Witt, W., Zielińska, M., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Boston, H. C., Bracco, A., Cederwall, B., Ciemała, M., de France, G., Domingo-Pardo, C., Eberth, J., Gadea, A., González, V., Gottardo, A., Harkness-Brennan, L. J., Hess, H., Judson, D. S., Jungclaus, A., Lenzi, S. M., Leoni, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Napoli, D. R., Nyberg, J., Podolyák, Zs., Pullia, A., Recchia, F., Reiter, P., Rezynkina, K., Salsac, M. D., Sanchis, E., Şenyiğit, M., Siciliano, M., Simpson, J., Sohler, D., Stezowski, O., Valiente-Dobón, J. J., and Verney, D.

Published
2023
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7. Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $^{87}_{43}$Tc$^{\ }_{44}$

Author

Liu, X., Cederwall, B., Qi, C., Wyss, R. A., Aktas, Ö., Ertoprak, A., Zhang, W., Clément, E., de France, G., Ralet, D., Gadea, A., Goasduff, A., Jaworski, G., Kuti, I., Nyakó, B. M., Nyberg, J., Palacz, M., Wadsworth, R., Valiente-Dobón, J. J., Al-Azri, H., Nyberg, A. Ataç, Bäck, T., de Angelis, G., Doncel, M., Dudouet, J., Gottardo, A., Jurado, M., Ljungvall, J., Mengoni, D., Napoli, D. R., Petrache, C. M., Sohler, D., Timár, J., Barrientos, D., Bednarczyk, P., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Burrows, I., Charles, L., Ciemala, M., Crespi, F. C. L., Cullen, D. M., Désesquelles, P., Domingo-Pardo, C., Eberth, J., Erduran, N., Ertürk, S., González, V., Goupil, J., Hess, H., Huyuk, T., Jungclaus, A., Korten, W., Lemasson, A., Leoni, S., Maj, A., Menegazzo, R., Million, B., Perez-Vidal, R. M., Podolyàk, Zs., Pullia, A., Recchia, F., Reiter, P., Saillant, F., Salsac, M. D., Sanchis, E., Simpson, J., Stezowski, O., Theisen, C., and Zielińska, M.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

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 Acc\'el\'erateur 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. A level scheme of $^{87}$Tc from the (9/2$^{+}_{g.s.}$) state to the (33/2$^{+}_{1}$) state was established based on 6 mutually coincident $\gamma$-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $\hbar\omega\approx 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.

Published
2021

8. AGATA DAQ-box: a unified data acquisition system for different experimental conditions

Author

Korichi, A., Clément, E., Dosme, N., Legay, E., Stézowski, O., Goasduff, A., Aubert, Y., Dudouet, J., Elloumi, S., Gauron, P., Grave, X., Gulmini, M., Jacob, J., Lafage, V., Jeannic, P. Le, Lalaire, G., Ljungvall, J., Maugeais, C., Michelagnoli, C., Molini, R., Philippon, G., Pietri, S., Ralet, D., Roetta, M., Saillant, F., Taurigna-Quere, M., and Toniolo, N.

Published
2023
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9. Scission configuration of $^{239}$U from yields and kinetic information of fission fragments

Author

Ramos, D., Caamano, M., Lemasson, A., Rejmund, M., Audouin, L., Alvarez-Pol, H., Frankland, J. D., Fernandez-Dominguez, B., Galiana-Baldo, E., Piot, J., Ackermann, D., Biswas, S., Clement, E., Durand, D., Farget, F., Fregeau, M. O., Galaviz, D., Heinz, A., Henriques, A. I., Jacquot, B., Jurado, B., Kim, Y. H., Morfouace, P., Ralet, D., Roger, T., Schmitt, C., Teubig, P., and Tsekhanovich, I.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The simultaneous measurement of the isotopic fission-fragment yields and fission-fragment velocities of $^{239}$U has been performed for the first time. The $^{239}$U fissioning system was produced in one-neutron transfer reactions between a $^{238}$U beam at 5.88 MeV/nucleon and a $^{9}$Be target. The combination of inverse kinematics at low energy and the use of the VAMOS++ spectrometer at the GANIL facility allows the isotopic identification of the full fission-fragment distribution and their velocity in the reference frame of the fissioning system. The proton and neutron content of the fragments at scission, their total kinetic and total excitation energy, as well as the neutron multiplicity were determined. Information from the scission point configuration is obtained from these observables and the correlation between them. The role of the octupole-deformed proton and neutron shells in the fission-fragment production is discussed., Comment: 8 pages, 7 figures

Published
2020
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10. Study of N=50Z=3282 gap evolution around N=50Z=3282: new structure information for N=50Z=3282Ge

Author

Thisse, D., Lebois, M., Verney, D., Wilson, J. N., Jovančević, N., Rudigier, M., Canavan, R., Etasse, D., Adsley, P., Algora, A., Babo, M., Belvedere, K., Benito, J., Benzoni, G., Blazhev, A., Boso, A., Bottoni, S., Bunce, M., Chakma, R., Cieplicka-Oryńczak, N., Courtin, S., Cortés, M. L., Davies, P., Delafosse, C., Fallot, M., Fornal, B., Fraile, L., Gjestvang, D., Gottardo, A., Guadilla, V., Gerst, R. -B., Häfner, G., Hauschild, K., Heine, M., Henrich, C., Homm, I., Hommet, J., Ibrahim, F., Iskra, Ł. W., Ivanov, P., Jazrawi, S., Korgul, A., Koseoglou, P., Kröll, T., Kurtukian-Nieto, T., Meur, L. Le, Leoni, S., Ljungvall, J., Lopez-Martens, A., Lozeva, R., Matea, I., Miernik, K., Nemer, J., Oberstedt, S., Paulsen, W., Piersa-Silkowska, M., Poklepa, W., Popovitch, Y., Porzio, C., Qi, L., Ralet, D., Regan, P. H., Reygadas-Tello, D., Rezynkina, K., Sánchez-Tembleque, V., Siem, S., Schmitt, C., Söderström, P. -A., Solak, K., Sürder, C., Tocabens, G., Vedia, V., Warr, N., Wasilewska, B., Wiederhold, J., Yavahchova, M., Zeiser, F., and Ziliani, S.

Published
2023
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11. First direct measurement of isotopic fission-fragment yields of $^{239}$U

Author

Ramos, D., Caamano, M., Lemasson, A., Rejmund, M., Audouin, L., Alvarez-Pol, H., Frankland, J. D., Fernandez-Dominguez, B., Galiana-Baldo, E., Piot, J., Ackermann, D., Biswas, S., Clement, E., Durand, D., Farget, F., Fregeau, M. O., Galaviz, D., Heinz, A., Henriques, A. I., Jacquot, B., Jurado, B., Kim, Y. H., Morfouace, P., Ralet, D., Roger, T., Schmitt, C., Teubig, P., and Tsekhanovich, I.

Subjects
Nuclear Experiment
Abstract

A direct and complete measurement of isotopic fission-fragment yields of $^{239}$U has been performed for the first time. The $^{239}$U fissioning system was produced with an average excitation energy of 8.3 MeV in one-neutron transfer reactions between a $^{238}$U beam and a $^{9}$Be target at Coulomb barrier energies. The fission fragments were detected and isotopically identified using the VAMOS++ spectrometer at the GANIL facility. This measurement allows to directly evaluate the fission models at excitation energies of fast neutrons, relevant for next-generation nuclear reactors. The present data, in agreement with model calculations, do not support the recently reported anomaly in the fission-fragment yields of $^{239}$U and confirm the persistence of spherical shell effects in the Sn region at excitation energies exceeding the fission barrier by few MeV.

Published
2019
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12. Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich $^{122-131}$Sb$_{51}$ isotopes

Author

Biswas, S., Lemasson, A., Rejmund, M., Navin, A., Kim, Y. H., Michelagnoli, C., Stefan, I., Banik, R., Bednarczyk, P., Bhattacharya, S., Bhattacharyya, S., Clément, E., Crawford, H. L., de France, G., Fallon, P., Frémont, G., Goupil, J., Jacquot, B., Li, H. J., Ljungvall, J., Maj, A., Ménager, L., Morel, V., Palit, R., Pérez-Vidal, R. M., Ropert, J., Barrientos, D., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Cederwall, B., Collado, J., Cullen, D. M., Désesquelles, P., Domingo-Pardo, C., Dudouet, J., Eberth, J., Gonzalez, V., Harkness-Brennan, L. J., Hess, H., Jungclaus, A., Korten, W., Labiche, M., Lefevre, A., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Pullia, A., Quintana, B., Ralet, D., Recchia, F., Reiter, P., Saillant, F., Salsac, M. D., Sanchis, E., Stezowski, O., Theisen, Ch., Valiente-Dobon, J. J., and Zielinska, M.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

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. New isomers, prompt and delayed transitions were established in the even-A $^{122-130}$Sb isotopes. In the odd-A $^{123-131}$Sb isotopes, new prompt and delayed $\gamma$-ray transitions were identified, in addition to the confirmation of the previously known isomers. The half-lives of the isomeric states and the $B(E2)$ transition probabilities of the observed transitions depopulating these isomers were extracted. The experimental data was compared with the theoretical results obtained in the framework of Large-Scale Shell-Model (LSSM) calculations in a restricted model space. Modifications of several components of the shell model interaction were introduced to obtain a consistent agreement with the excitation energies and the $B(E2)$ transition probabilities in neutron-rich Sn and Sb isotopes. The isomeric configurations in Sn and Sb were found to be relatively pure. Further, the calculations revealed that the presence of a single valence proton, mainly in the $g_{7/2}$ orbital in Sb isotopes, leads to significant mixing (due to the $\nu\pi$ interaction) of: (i) the neutron seniorities ($\upsilon_{\nu}$) and (ii) the neutron angular momentum ($I_{\nu}$). The above features have a weak impact on the excitation energies, but have an important impact on the $B(E2)$ transition probabilities. In addition, a constancy of the relative excitation energies irrespective of neutron seniority and neutron number in Sn and Sb was observed., Comment: 23 pages, 18 figures, 10 tables

Published
2019
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13. Interplay between nuclear shell evolution and shape deformation revealed by magnetic moment of 75Cu

Author

Ichikawa, Y., Nishibata, H., Tsunoda, Y., Takamine, A., Imamura, K., Fujita, T., Sato, T., Momiyama, S., Shimizu, Y., Ahn, D. S., Asahi, K., Baba, H., Balabanski, D. L., Boulay, F., Daugas, J. M., Egami, T., Fukuda, N., Funayama, C., Furukawa, T., Georgiev, G., Inabe, N., Ishibashi, Y., Kawaguchi, T., Kawamura, T., Kobayashi, Y., Kojima, S., Kusoglu, A., Mukul, I., Niikura, M., NIshizaka, T., Odahara, A., Ohtomo, Y., Otsuka, T., ralet, D., Simpson, G. S., Sumikama, T., Suzuki, H., Takeda, H., Tao, L. C., Togano, Y., Tominaga, D., Ueno, H., Yamazaki, H., and Yang, X. F.

Subjects
Nuclear Experiment
Abstract

Exotic nuclei are characterized by a number of neutrons (or protons) in excess relative to stable nuclei. Their shell structure, which represents single-particle motion in a nucleus, may vary due to nuclear force and excess neutrons, in a phenomenon called shell evolution. This effect could be counterbalanced by collective modes causing deformations of the nuclear surface. Here, we study the interplay between shell evolution and shape deformation by focusing on the magnetic moment of an isomeric state of the neutron-rich nucleus 75Cu. We measure the magnetic moment using highly spin-controlled rare-isotope beams and achieving large spin alignment via a two-step reaction scheme that incorporates an angular-momentum-selecting nucleon removal. By combining our experiments with numerical simulations of many-fermion correlations, we find that the low-lying states in 75Cu are, to a large extent, of single-particle nature on top of a correlated 74Ni core. We elucidate the crucial role of shell evolution even in the presence of the collective mode, and within the same framework, we consider whether and how the double magicity of the 78Ni nucleus is restored, which is also of keen interest from the perspective of nucleosynthesis in explosive stellar processes., Comment: 10 pages, 4 figures

Published
2018
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15. Shape evolution in even-mass $$^{98-104}$$Zr isotopes via lifetime measurements using the $$\gamma \gamma $$-coincidence technique

Author

Pasqualato, G., primary, Ansari, S., additional, Heines, J. S., additional, Modamio, V., additional, Görgen, A., additional, Korten, W., additional, Ljungvall, J., additional, Clément, E., additional, Dudouet, J., additional, Lemasson, A., additional, Rodríguez, T. R., additional, Allmond, J. M., additional, Arici, T., additional, Beckmann, K. S., additional, Bruce, A. M., additional, Doherty, D., additional, Esmaylzadeh, A., additional, Gamba, E. R., additional, Gerhard, L., additional, Gerl, J., additional, Georgiev, G., additional, Ivanova, D. P., additional, Jolie, J., additional, Kim, Y.-H., additional, Knafla, L., additional, Korichi, A., additional, Koseoglou, P., additional, Labiche, M., additional, Lalkovski, S., additional, Lauritsen, T., additional, Li, H.-J., additional, Pedersen, L. G., additional, Pietri, S., additional, Ralet, D., additional, Regis, J. M., additional, Rudigier, M., additional, Saha, S., additional, Sahin, E., additional, Siem, S., additional, Singh, P., additional, Söderström, P.-A., additional, Theisen, C., additional, Tornyi, T., additional, Vandebrouck, M., additional, Witt, W., additional, Zielińska, M., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Boston, A. J., additional, Boston, H. C., additional, Bracco, A., additional, Cederwall, B., additional, Ciemała, M., additional, de France, G., additional, Domingo-Pardo, C., additional, Eberth, J., additional, Gadea, A., additional, González, V., additional, Gottardo, A., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Jungclaus, A., additional, Lenzi, S. M., additional, Leoni, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Napoli, D. R., additional, Nyberg, J., additional, Podolyák, Zs., additional, Pullia, A., additional, Recchia, F., additional, Reiter, P., additional, Rezynkina, K., additional, Salsac, M. D., additional, Sanchis, E., additional, Şenyiğit, M., additional, Siciliano, M., additional, Simpson, J., additional, Sohler, D., additional, Stezowski, O., additional, Valiente-Dobón, J. J., additional, and Verney, D., additional

Published
2023
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18. Angular momentum generation in nuclear fission

Author

Wilson, J. N., Thisse, D., Lebois, M., Jovančević, N., Gjestvang, D., Canavan, R., Rudigier, M., Étasse, D., Gerst, R-B., Gaudefroy, L., Adamska, E., Adsley, P., Algora, A., Babo, M., Belvedere, K., Benito, J., Benzoni, G., Blazhev, A., Boso, A., Bottoni, S., Bunce, M., Chakma, R., Cieplicka-Oryńczak, N., Courtin, S., Cortés, M. L., Davies, P., Delafosse, C., Fallot, M., Fornal, B., Fraile, L., Gottardo, A., Guadilla, V., Häfner, G., Hauschild, K., Heine, M., Henrich, C., Homm, I., Ibrahim, F., Iskra, Ł. W., Ivanov, P., Jazrawi, S., Korgul, A., Koseoglou, P., Kröll, T., Kurtukian-Nieto, T., Le Meur, L., Leoni, S., Ljungvall, J., Lopez-Martens, A., Lozeva, R., Matea, I., Miernik, K., Nemer, J., Oberstedt, S., Paulsen, W., Piersa, M., Popovitch, Y., Porzio, C., Qi, L., Ralet, D., Regan, P. H., Rezynkina, K., Sánchez-Tembleque, V., Siem, S., Schmitt, C., Söderström, P.-A., Sürder, C., Tocabens, G., Vedia, V., Verney, D., Warr, N., Wasilewska, B., Wiederhold, J., Yavahchova, M., Zeiser, F., and Ziliani, S.

Published
2021
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19. Characterization of a gamma-ray tracking array: A comparison of GRETINA and Gammasphere using a 60Co source

Author

Lauritsen, T, Korichi, A, Zhu, S, Wilson, AN, Weisshaar, D, Dudouet, J, Ayangeakaa, AD, Carpenter, MP, Campbell, CM, Clément, E, Crawford, HL, Cromaz, M, Fallon, P, Greene, JP, Janssens, RVF, Khoo, TL, Lalović, N, Lee, IY, Macchiavelli, AO, Perez-Vidal, RM, Pietri, S, Radford, DC, Ralet, D, Riley, LA, Seweryniak, D, and Stezowski, O

Subjects
Segmented germanium detectors, Efficiency measurements, gamma-Ray tracking, Gammasphere, GRETINA, GRETA, gamma-Ray spectroscopy, Nuclear structure, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences
Abstract

In this paper, we provide a formalism for the characterization of tracking arrays with emphasis on the proper corrections required to extract their photopeak efficiencies and peak-to-total ratios. The methods are first applied to Gammasphere, a well characterized 4π array based on the principle of Compton suppression, and subsequently to GRETINA. The tracking efficiencies are then discussed and some guidelines as to what clustering angle to use in the tracking algorithm are presented. It was possible, using GEANT4 simulations, to scale the measured efficiencies up to the expected values for the full 4π implementation of GRETA.

Published
2016

20. Experimental study of high-energy fission and quasi-fission with fusion- induced fission reactions at VAMOS++

Author

Fernández D., Caamaño M., Ramos D., Lemasson A., Rejmund M., Álvarez-Pol H., Audouin L., Frankland J. D., Fernández-Domínguez B., Galiana-Baldó E., Piot J., Schmitt C., Ackermann D., Biswas S., Clement E., Durand D., Farget F., Fregeau M. O., Galaviz D., Heinz A., Henriques A., Jacquot B., Jurado B., Kim Y. H., Morfouace P., Ralet D., Roger T., Teubig P., and Tsekhanovich I.

Subjects
Physics, QC1-999
Abstract

Over the past decade, inverse kinematics has been increasingly employed in experimental studies of fission. This approach has yielded a wealth of new observables that can be obtained in single measurements, enabling their analysis and correlations. One ongoing application of this technique involves a series of experiments performed at GANIL using the variable-mode, large-acceptance VAMOS++ spectrometer. A recent experiment focused on examining the survival of nuclear structure effects at high excitation energy in both fission and quasi-fission. The results of the study involved a full isotopic identification of fragments, as well as an analysis of the elemental yields their relation to fission dynamics. The results indicate that fission and quasi-fission involve different mechanisms, which could be exploited to distinguish between the two phenomena.

Published
2023
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21. Experimental study of high-energy fission and quasi-fission dynamics with fusion-induced fission reactions at VAMOS++

Author

Fernández D., Caamaño M., Ramos D., Lemasson A., Rejmund M., Álvarez-Pol H., Audouin L., Frankland J. D., Fernández-Domínguez B., Galiana-Baldó E., Piot J., Schmitt C., Ackermann D., Biswas S., Clement E., Durand D., Farget F., Fregeau M. O., Galaviz D., Heinz A., Henriques A., Jacquot B., Jurado B., Kim Y. H., Morfouace P., Ralet D., Roger T., Teubig P., and Tsekhanovich I.

Subjects
Physics, QC1-999
Abstract

During the last decade, the use of inverse kinematics in the experimental study of fission is bringing a wealth of new observables obtained in single measurements, allowing their analysis and their correlations. An ongoing application of this technique is the basis of a series of experiments performed with the variable-mode, large-acceptance VAMOS++ spectrometer at GANIL. A recent experiment has been focused on the survival of the nuclear structure effects at high excitation energy in fission and quasi-fission. The full isotopic identification of fragments, the fission dynamics and the ratio between the production of fragments with even and odd atomic numbers, the so-called proton even-odd effect, are shown. The latter shows a different mechanism for fission and quasi-fission that could be used to separate fission from quasi-fission.

Published
2023
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23. Study of $$N=50$$ gap evolution around $$Z=32$$: new structure information for $${}^{82}$$Ge

Author

Thisse, D., primary, Lebois, M., additional, Verney, D., additional, Wilson, J. N., additional, Jovančević, N., additional, Rudigier, M., additional, Canavan, R., additional, Etasse, D., additional, Adsley, P., additional, Algora, A., additional, Babo, M., additional, Belvedere, K., additional, Benito, J., additional, Benzoni, G., additional, Blazhev, A., additional, Boso, A., additional, Bottoni, S., additional, Bunce, M., additional, Chakma, R., additional, Cieplicka-Oryńczak, N., additional, Courtin, S., additional, Cortés, M. L., additional, Davies, P., additional, Delafosse, C., additional, Fallot, M., additional, Fornal, B., additional, Fraile, L., additional, Gjestvang, D., additional, Gottardo, A., additional, Guadilla, V., additional, Gerst, R. -B., additional, Häfner, G., additional, Hauschild, K., additional, Heine, M., additional, Henrich, C., additional, Homm, I., additional, Hommet, J., additional, Ibrahim, F., additional, Iskra, Ł. W., additional, Ivanov, P., additional, Jazrawi, S., additional, Korgul, A., additional, Koseoglou, P., additional, Kröll, T., additional, Kurtukian-Nieto, T., additional, Meur, L. Le, additional, Leoni, S., additional, Ljungvall, J., additional, Lopez-Martens, A., additional, Lozeva, R., additional, Matea, I., additional, Miernik, K., additional, Nemer, J., additional, Oberstedt, S., additional, Paulsen, W., additional, Piersa-Silkowska, M., additional, Poklepa, W., additional, Popovitch, Y., additional, Porzio, C., additional, Qi, L., additional, Ralet, D., additional, Regan, P. H., additional, Reygadas-Tello, D., additional, Rezynkina, K., additional, Sánchez-Tembleque, V., additional, Siem, S., additional, Schmitt, C., additional, Söderström, P. -A., additional, Solak, K., additional, Sürder, C., additional, Tocabens, G., additional, Vedia, V., additional, Warr, N., additional, Wasilewska, B., additional, Wiederhold, J., additional, Yavahchova, M., additional, Zeiser, F., additional, and Ziliani, S., additional

Published
2023
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24. Interplay between nuclear shell evolution and shape deformation revealed by the magnetic moment of 75Cu

Author

Ichikawa, Y., Nishibata, H., Tsunoda, Y., Takamine, A., Imamura, K., Fujita, T., Sato, T., Momiyama, S., Shimizu, Y., Ahn, D. S., Asahi, K., Baba, H., Balabanski, D. L., Boulay, F., Daugas, J. M., Egami, T., Fukuda, N., Funayama, C., Furukawa, T., Georgiev, G., Gladkov, A., Inabe, N., Ishibashi, Y., Kawaguchi, T., Kawamura, T., Kobayashi, Y., Kojima, S., Kusoglu, A., Mukul, I., Niikura, M., Nishizaka, T., Odahara, A., Ohtomo, Y., Otsuka, T., Ralet, D., Simpson, G. S., Sumikama, T., Suzuki, H., Takeda, H., Tao, L. C., Togano, Y., Tominaga, D., Ueno, H., Yamazaki, H., and Yang, X. F.

Published
2019
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26. Conceptual design of the AGATA [formula omitted] array at GANIL

Author

Clément, E., Michelagnoli, C., de France, G., Li, H.J., Lemasson, A., Barthe Dejean, C., Beuzard, M., Bougault, P., Cacitti, J., Foucher, J.-L., Fremont, G., Gangnant, P., Goupil, J., Houarner, C., Jean, M., Lefevre, A., Legeard, L., Legruel, F., Maugeais, C., Ménager, L., Ménard, N., Munoz, H., Ozille, M., Raine, B., Ropert, J.A., Saillant, F., Spitaels, C., Tripon, M., Vallerand, Ph., Voltolini, G., Korten, W., Salsac, M.-D., Theisen, Ch., Zielińska, M., Joannem, T., Karolak, M., Kebbiri, M., Lotode, A., Touzery, R., Walter, Ch., Korichi, A., Ljungvall, J., Lopez-Martens, A., Ralet, D., Dosme, N., Grave, X., Karkour, N., Lafay, X., Legay, E., Kojouharov, I., Domingo-Pardo, C., Gadea, A., Pérez-Vidal, R.M., Civera, J.V., Birkenbach, B., Eberth, J., Hess, H., Lewandowski, L., Reiter, P., Nannini, A., De Angelis, G., Jaworski, G., John, P., Napoli, D.R., Valiente-Dobón, J.J., Barrientos, D., Bortolato, D., Benzoni, G., Bracco, A., Brambilla, S., Camera, F., Crespi, F.C.L., Leoni, S., Million, B., Pullia, A., Wieland, O., Bazzacco, D., Lenzi, S.M., Lunardi, S., Menegazzo, R., Mengoni, D., Recchia, F., Bellato, M., Isocrate, R., Egea Canet, F.J., Didierjean, F., Duchêne, G., Baumann, R., Brucker, M., Dangelser, E., Filliger, M., Friedmann, H., Gaudiot, G., Grapton, J.-N., Kocher, H., Mathieu, C., Sigward, M.-H., Thomas, D., Veeramootoo, S., Dudouet, J., Stézowski, O., Aufranc, C., Aubert, Y., Labiche, M., Simpson, J., Burrows, I., Coleman-Smith, P.J., Grant, A., Lazarus, I.H., Morrall, P.S., Pucknell, V.F.E., Boston, A., Judson, D.S., Lalović, N., Nyberg, J., Collado, J., González, V., Kuti, I., Nyakó, B.M., Maj, A., and Rudigier, M.

Published
2017
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27. Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the π(p3/2)→π(p1/2)85Br spin-flip transition in π(p3/2)→π(p1/2)85Br

Author

Napiralla, P., Lettmann, M., Stahl, C., Rainovski, G., Pietralla, N., Afara, S., Ameil, F., Arici, T., Aydin, S., Barrientos, D., Bednarczyk, P., Bentley, M. A., Benzoni, G., Birkenbach, B., Blazhev, A., Boston, A. J., Boutachkov, P., Bracco, A., Bruyneel, B., Clément, E., Cortés, M. L., Crespi, F. C. L., Cullen, D. M., Curien, D., Désesquelles, P., Didierjean, F., Domingo-Pardo, C., Duchêne, G., Eberth, J., Egger, H., Fahlander, C., Gerl, J., Gladnishki, K. A., Golubev, P., González, V., Górska, M., Gottardo, A., Grassi, L., Habermann, T., Harkness-Brennan, L. J., Hess, H., Jenkins, D. G., John, P. R., Jolie, J., Judson, D. S., Kojouharov, I., Korten, W., Labiche, M., Lalović, N., Lizarazo, C., Louchart-Henning, C., Maj, A., Menegazzo, R., Mengoni, D., Merchan, E., Million, B., Möller, O., Möller, T., Moschner, K., Modamio, V., Napoli, D., Singh, B. S. Nara, Podolyák, Zs., Pietri, S., Ralet, D., Reese, M., Reiter, P., Rudolph, D., Sanchis, E., Sarmiento, L. G., Schaffner, H., Simpson, J., Singh, P. P., Valiente-Dobón, J. J., Werner, V., and Wieland, O.

Published
2020
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28. Characterization of a gamma-ray tracking array: A comparison of GRETINA and Gammasphere using a 60Co source

Author

Lauritsen, T., Korichi, A., Zhu, S., Wilson, A.N., Weisshaar, D., Dudouet, J., Ayangeakaa, A.D., Carpenter, M.P., Campbell, C.M., Clément, E., Crawford, H.L., Cromaz, M., Fallon, P., Greene, J.P., Janssens, R.V.F., Khoo, T.L., Lalović, N., Lee, I.Y., Macchiavelli, A.O, Perez-Vidal, R.M., Pietri, S., Radford, D.C., Ralet, D., Riley, L.A., Seweryniak, D., and Stezowski, O.

Published
2016
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29. Spectroscopic quadrupole moments in Xe124

Author

Clément, E., primary, Lemasson, A., additional, Rejmund, M., additional, Jacquot, B., additional, Ralet, D., additional, Michelagnoli, C., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Boston, A. J., additional, Bracco, A., additional, Cederwall, B., additional, Ciemala, M., additional, Collado, J., additional, Crespi, F., additional, Domingo-Pardo, C., additional, Dudouet, J., additional, Eberth, H. J., additional, de France, G., additional, Gadea, A., additional, Gonzalez, V., additional, Gottardo, A., additional, Harkness, L., additional, Hess, H., additional, Jungclaus, A., additional, Kaşkaş, A., additional, Korten, W., additional, Lenzi, S. M., additional, Leoni, S., additional, Ljungvall, J., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Napoli, D. R., additional, Nyberg, J., additional, Podolyak, Zs., additional, Pullia, A., additional, Quintana Arnés, B., additional, Recchia, F., additional, Redon, N., additional, Reiter, P., additional, D.Salsac, M., additional, Sanchis, E., additional, Şenyiğit, M., additional, Siciliano, M., additional, Sohler, D., additional, Stezowski, O., additional, Theisen, C., additional, and Valiente Dobón, J. J., additional

Published
2023
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31. Data for publication in Nature Communications: Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes

Author

Fougères, C., Oliveira Santos, F., José, J., Michelagnoli, C., Clément, E., Kim, Y. H., Lemasson, A., Guimarães, V., Barrientos, D., Bemmerer, D., Benzoni, G., Boston, A. J., Böttger, R., Boulay, F., Bracco, A., Celikovic, I., Cederwall, B., Ciemala, M., Delafosse, C., Domingo-Pardo, C., Dudouet, J., Eberth, J., Fülöp, Z., González, V., Gottardo, A., Goupil, J., Hess, H., Jungclaus, A., Kaskas, A., Korichi, A., Lenzi, S. M., Leoni, S., Li, H., Ljungvall, J., Lopez-Martens, A., Menegazzo, R., Mengoni, D., Million, B., Mrazek, J., Napoli, D. R., Navin, A., Nyberg, J., Podolyak, Z., Pullia, A., Quintana, B., Ralet, D., Redon, N., Reiter, P., Rezynkina, K., Saillant, F., Salsac, M. D., Sánchez-Benítez, A. M., Sanchis, E., Senyigit, M., Siciliano, M., Smirnova, N. A., Sohler, D., Stanoiu, M., Theisen, C., Valiente-Dobón, J. J., Ujic, P., and Zielinska, M.

Abstract

https://u.ganil-spiral2.eu/10.26143/GANIL-2016-E710.html

Published
2023

33. Hg178 and asymmetric fission of neutron-deficient pre-actinides

Author

Jhingan, A., primary, Schmitt, C., additional, Lemasson, A., additional, Biswas, S., additional, Kim, Y. H., additional, Ramos, D., additional, Andreyev, A. N., additional, Curien, D., additional, Ciemała, M., additional, Clément, E., additional, Dorvaux, O., additional, De Canditiis, B., additional, Didierjean, F., additional, Duchêne, G., additional, Dudouet, J., additional, Frankland, J., additional, Frémont, G., additional, Goupil, J., additional, Jacquot, B., additional, Raison, C., additional, Ralet, D., additional, Retailleau, B.-M., additional, Stuttgé, L., additional, Tsekhanovich, I., additional, Andreev, A. V., additional, Goriely, S., additional, Hilaire, S., additional, Lemaître, J.-F., additional, Möller, P., additional, and Schmidt, K.-H., additional

Published
2022
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34. Evidence for spherical-oblate shape coexistence in Tc87

Author

Liu, X., primary, Cederwall, B., additional, Qi, C., additional, Wyss, R. A., additional, Aktas, Ö., additional, Ertoprak, A., additional, Zhang, W., additional, Clément, E., additional, de France, G., additional, Ralet, D., additional, Gadea, A., additional, Goasduff, A., additional, Jaworski, G., additional, Kuti, I., additional, Nyakó, B. M., additional, Nyberg, J., additional, Palacz, M., additional, Wadsworth, R., additional, Valiente-Dobón, J. J., additional, Al-Azri, H., additional, Ataç Nyberg, A., additional, Bäck, T., additional, de Angelis, G., additional, Doncel, M., additional, Dudouet, J., additional, Gottardo, A., additional, Jurado, M., additional, Ljungvall, J., additional, Mengoni, D., additional, Napoli, D. R., additional, Petrache, C. M., additional, Sohler, D., additional, Timár, J., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, A. J., additional, Boston, H. C., additional, Burrows, I., additional, Charles, L., additional, Ciemala, M., additional, Crespi, F. C. L., additional, Cullen, D. M., additional, Désesquelles, P., additional, Domingo-Pardo, C., additional, Eberth, J., additional, Erduran, N., additional, Ertürk, S., additional, González, V., additional, Goupil, J., additional, Hess, H., additional, Huyuk, T., additional, Jungclaus, A., additional, Korten, W., additional, Lemasson, A., additional, Leoni, S., additional, Maj, A., additional, Menegazzo, R., additional, Million, B., additional, Perez-Vidal, R. M., additional, Podolyàk, Zs., additional, Pullia, A., additional, Recchia, F., additional, Reiter, P., additional, Saillant, F., additional, Salsac, M. D., additional, Sanchis, E., additional, Simpson, J., additional, Stezowski, O., additional, Theisen, C., additional, and Zielińska, M., additional

Published
2022
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35. Evidence of Partial Seniority Conservation in the πg9/2 Shell for the N=50 Isotones

Author

Pérez-Vidal, R. M., primary, Gadea, A., additional, Domingo-Pardo, C., additional, Gargano, A., additional, Valiente-Dobón, J. J., additional, Clément, E., additional, Lemasson, A., additional, Coraggio, L., additional, Siciliano, M., additional, Szilner, S., additional, Bast, M., additional, Braunroth, T., additional, Collado, J., additional, Corina, A., additional, Dewald, A., additional, Doncel, M., additional, Dudouet, J., additional, de France, G., additional, Fransen, C., additional, González, V., additional, Hüyük, T., additional, Jacquot, B., additional, John, P. R., additional, Jungclaus, A., additional, Kim, Y. H., additional, Korichi, A., additional, Labiche, M., additional, Lenzi, S., additional, Li, H., additional, Ljungvall, J., additional, López-Martens, A., additional, Mengoni, D., additional, Michelagnoli, C., additional, Müller-Gatermann, C., additional, Napoli, D. R., additional, Navin, A., additional, Quintana, B., additional, Ramos, D., additional, Rejmund, M., additional, Sanchis, E., additional, Simpson, J., additional, Stezowski, O., additional, Wilmsen, D., additional, Zielińska, M., additional, Boston, A. J., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, H. C., additional, Bracco, A., additional, Cederwall, B., additional, Cullen, D. M., additional, Didierjean, F., additional, Eberth, J., additional, Gottardo, A., additional, Goupil, J., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Kaşkaş, A., additional, Korten, W., additional, Leoni, S., additional, Menegazzo, R., additional, Million, B., additional, Nyberg, J., additional, Podolyak, Zs., additional, Pullia, A., additional, Ralet, D., additional, Recchia, F., additional, Reiter, P., additional, Rezynkina, K., additional, Salsac, M. D., additional, Şenyiğit, M., additional, Sohler, D., additional, Theisen, Ch., additional, and Verney, D., additional

Published
2022
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36. Structure of As83, As85, and As87 : From semimagicity to γ softness

Author

Rezynkina, K., primary, Dao, D. D., additional, Duchêne, G., additional, Dudouet, J., additional, Nowacki, F., additional, Clément, E., additional, Lemasson, A., additional, Andreoiu, C., additional, Astier, A., additional, de Angelis, G., additional, de France, G., additional, Delafosse, C., additional, Deloncle, I., additional, Didierjean, F., additional, Dombradi, Z., additional, Ducoin, C., additional, Gadea, A., additional, Gottardo, A., additional, Guinet, D., additional, Jacquot, B., additional, Jones, P., additional, Konstantinopoulos, T., additional, Kuti, I., additional, Korichi, A., additional, Lenzi, S. M., additional, Li, G., additional, Le Blanc, F., additional, Lizarazo, C., additional, Lozeva, R., additional, Maquart, G., additional, Million, B., additional, Michelagnoli, C., additional, Napoli, D. R., additional, Navin, A., additional, Pérez-Vidal, R. M., additional, Petrache, C. M., additional, Pietralla, N., additional, Ralet, D., additional, Ramdhane, M., additional, Rejmund, M., additional, Stezowski, O., additional, Schmitt, C., additional, Sohler, D., additional, and Verney, D., additional

Published
2022
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37. Study of High-Energy Fission in Inverse Kinematics

Author

Mantovani G., Ramos D., Caamaño M., Lemasson A., Rejmund M., Audoin L., Álvarez Pol H., Frankland J., Fernández-Domínguez B., Galiana-Baldó E., Piot J., Gramegna F., Marchi T., Cicerchia M., Ackermann D., Biswas S., Clement E., Durand D., Farget F., Fregeau M.O., Galaviz D., Heinz A., Henriques A.I., Jacquot B., Jurado B., Kim Y., Morfouace P., Ralet D., Roger T., Schmitt C., Teubig P., and Tsekhanovich I.

Subjects
Physics, QC1-999
Abstract

Fission at low excitation energy, is a process in which both macroscopic and microscopic aspects are involved. Some features in the total kinetic energy and in the N/Z distributions of the fragments, commonly associated with shell effects, came out in a series of recent experiments with high excitation energy fusionfission reactions in inverse kinematics. In the latest experiment of this campaign, a study of high-energy fission and quasi-fission between a 238U beam and a series of light targets was carried out by using the aforementioned technique, in order to probe the role of the shell structure in these processes.

Published
2019
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38. Evidence of Partial Seniority Conservation in the pi g9/2 Shell for the N=50 Isotones

Author

Perez-Vidal, R. M., Gadea, A., Domingo-Pardo, C., Gargano, A., Valiente-Dobon, J. J., Clement, E., Lemasson, A., Coraggio, L., Siciliano, M., Szilner, S., Bast, M., Braunroth, T., Collado, J., Corina, A., Dewald, A., Doncel, M., Dudouet, J., de France, G., Fransen, C., Gonzalez, V., Huyuk, T., Jacquot, B., John, P. R., Jungclaus, A., Kim, Y. H., Korichi, A., Labiche, M., Lenzi, S., Li, H., Ljungvall, J., Lopez-Martens, A., Mengoni, D., Michelagnoli, C., Muller-Gatermann, C., Napoli, D. R., Navin, A., Quintana, B., Ramos, D., Rejmund, M., Sanchis, E., Simpson, J., Stezowski, O., Wilmsen, D., Zielinska, M., Boston, A. J., Barrientos, D., Bednarczyk, P., Benzoni, G., Birkenbach, B., Boston, H. C., Bracco, A., Cederwall, B., Cullen, D. M., Didierjean, F., Eberth, J., Gottardo, A., Goupil, J., Harkness-Brennan, L. J., Hess, H., Judson, D. S., Kaskas, A., Korten, W., Leoni, S., Menegazzo, R., Million, B., Nyberg, J., Podolyak, Zs., Pullia, A., Ralet, D., Recchia, F., Reiter, P., Rezynkina, K., Salsac, M. D., Senigit, M., Sohler, D., Theisen, Ch., and Verney, D.

Subjects
multinucleon transfer reactions, life-time measurement, seniority scheme, Physics
Abstract

The reduced transition probabilities for the 4-> and 2->0 transitions in 92Mo and 94Ru and for the 4->2 and 6->4 transitions in 90Zr 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 f5/2, p3/2, p1/2, and g9/2 proton valence space. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the N=50 g9/2 orbital to be understood. The conclusion is that seniority is largely conserved in the first πg9/2 orbital.

Published
2022

39. Evidence for spherical-oblate shape coexistence in $^{87}\mathrm{Tc}$

Author

Liu, X, Cederwall, B, Qi, C, Wyss, R A, Aktas, Ö, Ertoprak, A, Zhang, W, Clément, E, de France, G, Ralet, D, Gadea, A, Goasduff, A, Jaworski, G, Kuti, I, Nyakó, B M, Nyberg, J, Palacz, M, Wadsworth, R, Valiente-Dobón, J J, Al-Azri, H, Nyberg, A Ataç, Bäck, T, de Angelis, G, Doncel, M, Dudouet, J, Gottardo, A, Jurado, M, Ljungvall, J, Mengoni, D, Napoli, D R, Petrache, C M, Sohler, D, Timár, J, Barrientos, D, Bednarczyk, P, Benzoni, G, Birkenbach, B, Boston, A J, Boston, H C, Burrows, I, Charles, L, Ciemala, M, Crespi, F C L, Cullen, D M, Désesquelles, P, Domingo-Pardo, C, Eberth, J, Erduran, N, Ertürk, S, González, V, Goupil, J, Hess, H, Huyuk, T, Jungclaus, A, Korten, W, Lemasson, A, Leoni, S, Maj, A, Menegazzo, R, Million, B, Perez-Vidal, R M, Podolyàk, Zs, Pullia, A, Recchia, F, Reiter, P, Saillant, F, Salsac, M D, Sanchis, E, Simpson, J, Stezowski, O, Theisen, C, Zielinska, M, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; 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. Six transitions from the deexcitation of excited states belonging to a new band in $^{87}$Tc were identified by comparing $\gamma$-ray intensities in the spectra gated under different reaction channel selection conditions. The constructed level structure was compared with the shell model and total Routhian surface calculations. The results indicate that the new band structure in $^{87}$Tc is built on a spherical configuration, which is different from that assigned to the previously identified oblate yrast rotational band.

Published
2022

40. Evidence of Partial Seniority Conservation in the $\pi{g}_{9/2}$ Shell for the $N=50$ Isotones

Author

Perez-Vidal, Rm, Gadea, A, Domingo-Pardo, C, Gargano, A, Valiente-Dobon, Jj, Clement, E, Lemasson, A, Coraggio, L, Siciliano, M, Szilner, S, Bast, M, Braunroth, T, Collado, J, Corina, A, Dewald, A, Doncel, M, Dudouet, J, de France, G, Fransen, C, Gonzalez, V, Huyuk, T, Jacquot, B, John, Pr, Jungclaus, A, Kim, Yh, Korichi, A, Labiche, M, Lenzi, S, Li, H, Ljungvall, J, Lopez-Martens, A, Mengoni, D, Michelagnoli, C, Muller-Gatermann, C, Napoli, Dr, Navin, A, Quintana, B, Ramos, D, Rejmund, M, Sanchis, E, Simpson, J, Stezowski, O, Wilmsen, D, Zielinska, M, Boston, Aj, Barrientos, D, Bednarczyk, P, Benzoni, G, Birkenbach, B, Boston, Hc, Bracco, A, Cederwall, B, Cullen, Dm, Didierjean, F, Eberth, J, Gottardo, A, Goupil, J, Harkness-Brennan, Lj, Hess, H, Judson, Ds, Kaskas, A, Korten, W, Leoni, S, Menegazzo, R, Million, B, Nyberg, J, Podolyak, Z, Pullia, A, Ralet, D, Recchia, F, Reiter, P, Rezynkina, K, Salsac, Md, Senyigit, M, Sohler, D, Theisen, C, Verney, D, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Subatomär fysik, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Physics - Theory, Atom and Molecular Physics and Optics, Subatomic Physics, Atom- och molekylfysik och optik
Abstract

International audience; 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. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the $N=50 g_{9/2}$ orbital to be understood. The conclusion is that seniority is largely conserved in the first $\pi{g}_{9/2}$ orbital.

Published
2022

41. Structure of <math><mmultiscripts><mi>As</mi><mprescripts/><none/><mn>83</mn></mmultiscripts><mo>,</mo></math> <math><mmultiscripts><mi>As</mi><mprescripts/><none/><mn>85</mn></mmultiscripts><mo>,</mo></math> and <math><mmultiscripts><mi>As</mi><mprescripts/><none/><mn>87</mn></mmultiscripts></math>: From semimagicity to <math><mi>γ</mi></math> softness

Author

Rezynkina, K., Dao, D.D., Duchene, G., Dudouet, J., Nowacki, F., Clément, E., Lemasson, A., Andreoiu, C., Astier, A., de Angelis, G., de France, G., Delafosse, C., Deloncle, I., Didierjean, F., Dombradi, Z., Ducoin, C., Gadea, A., Gottardo, A., Guinet, D., Jacquot, B., Jones, P., Konstantinopoulos, T., Kuti, I., Korichi, A., Lenzi, S.M., Li, G., Le Blanc, F., Lizarazo, C., Lozeva, R., Maquart, G., Million, B., Michelagnoli, C., Napoli, D.R., Navin, A., Perez-Vidal, R.M., Petrache, C.M., Pietralla, N., Ralet, D., Ramdhane, M., Rejmund, M., Stezowski, O., Schmitt, C., Sohler, D., Verney, D., Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; The structure of As83, As85, and As87 have been studied in fusion-fission reaction U238+Be9. Fission fragments were identified in mass and atomic number using the VAMOS++ spectrometer and the coincident γ rays were detected in the γ-ray tracking array AGATA. New transitions in As83 and As85 are reported and placed in the level schemes. A level scheme of the excited states in As87 is proposed for the first time. The data are interpreted in frame of large-scale shell-model calculations, SU3 symmetries, and beyond mean-field frameworks. A spherical regime at magic number N=50 is predicted and the location of the proton g9/2 orbital is proposed for the first time. Development of collectivity in a prolate deformed, γ-soft regime in the open shell cases As85 and As87, most neutron-rich isotopes beyond N=50, is concluded. Data and theoretical calculations give confidence to a relatively high extrapolated excitation energy about 4 MeV of the 9/2+ state in Cu79, one proton above Ni78.

Published
2022

42. Structure of 83As, 85As, and 87As : From semimagicity to gamma softness

Author

Rezynkina, K., Dao, D. D., Duchene, G., Dudouet, J., Nowacki, F., Clement, E., Lemasson, A., Andreoiu, C., Astier, A., de Angelis, G., de France, G., Delafosse, C., Deloncle, I., Didierjean, F., Dombradi, Z., Ducoin, C., Gadea, A., Gottardo, A., Guinet, D., Jacquot, B., Jones, P., Konstantinopoulos, T., Kuti, I., Korichi, A., Lenzi, S. M., Li, G., Le Blanc, F., Lizarazo, C., Lozeva, R., Maquart, G., Million, B., Michelagnoli, C., Napoli, D. R., Navin, A., Perez-Vidal, R. M., Petrache, C. M., Pietralla, N., Ralet, D., Ramdhane, M., Rejmund, M., Stezowski, O., Schmitt, C., Sohler, D., and Verney, D.

Published
2022

43. Reinterpretation of excited states in Po212 : Shell-model multiplets rather than α -cluster states

Author

Fernández, A., primary, Jungclaus, A., additional, Golubev, P., additional, Rudolph, D., additional, Sarmiento, L. G., additional, Gargano, A., additional, Naïdja, H., additional, Astier, A., additional, Dupont, E., additional, Gadea, A., additional, Nácher, E., additional, Perea, A., additional, Wimmer, K., additional, Clément, E., additional, Fremont, G., additional, Goupil, J., additional, Houarner, C., additional, Jacquot, B., additional, Korichi, A., additional, Lemasson, A., additional, Li, H. J., additional, Ljungvall, J., additional, Ménager, L., additional, Pérez-Vidal, R. M., additional, Petrache, C. M., additional, Ralet, D., additional, Ropert, J. A., additional, Saillant, F., additional, Såmark-Roth, A., additional, Simpson, G. S., additional, Spitaels, C., additional, Zielinska, M., additional, Ansari, S., additional, Dudouet, J., additional, Illana, A., additional, Jurado, M., additional, Kocheva, D., additional, Lalović, N., additional, Lorenz, Ch., additional, Quintana, B., additional, Rainovski, G., additional, Redon, N., additional, Tocabens, G., additional, Barrientos, D., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, A. J., additional, Boston, H. C., additional, Bracco, A., additional, Ciemala, M., additional, Collado, J., additional, Cullen, D. M., additional, Domingo-Pardo, C., additional, Eberth, J., additional, González, V., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Korten, W., additional, Leoni, S., additional, Maj, A., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Million, B., additional, Napoli, D. R., additional, Nyberg, J., additional, Podolyak, Zs., additional, Pullia, A., additional, Reiter, P., additional, Sanchis, E., additional, Stezowski, O., additional, Theisen, Ch., additional, and Valiente-Dobón, J. J., additional

Published
2021
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44. Boulay et al. Reply: Comment on 'g Factor of the Zr99(7/2+) Isomer: Monopole Evolution in the Shape-Coexisting Region'

Author

Boulay, F., Simpson, G.S., Ichikawa, Y., Kisyov, S., Bucurescu, D., Takamine, A., Ahn, D.S., Asahi, K., Baba, H., Balabanski, D.L., Egami, T., Fujita, T., Fukuda, N., Funayama, C., Furukawa, T., Georgiev, G., Gladkov, A., Hass, M., Imamura, K., Inabe, N., Ishibashi, Y., Kawaguchi, T., Kawamura, T., Kim, W., Kobayashi, Y., Kojima, S., Kusoglu, A., Lozeva, R., Momiyama, S., Mukul, I., Niikura, M., Nishibata, H., Nishizaka, T., Odahara, A., Ohtomo, Y., Ralet, D., Sato, T., Shimizu, Y., Sumikama, T., Suzuki, H., Takeda, H., Tao, L.C., Togano, Y., Tominaga, D., Ueno, H., Yamazaki, H., Yang, X.F., Daugas, J.M., Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), RIKEN Nishina Center for Accelerator-Based Science [Wako] (RIKEN RNC), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
21.60.-n, 25.70.Mn, 23.20.En, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], numbers: 21.10.Ky, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

45. Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$

Author

Liu, X., Cederwall, B., Qi, C., Wyss, R.A., Aktas, Ö., Ertoprak, A., Zhang, W., Clément, E., De France, G., Ralet, D., Gadea, A., Goasduff, A., Jaworski, G., Kuti, I., Nyakó, B.M., Nyberg, J., Palacz, M., Wadsworth, R., Valiente-Dobón, J.J., Al-Azri, H., Ataç Nyberg, A., Bäck, T., De Angelis, G., Doncel, M., Dudouet, J., Gottardo, A., Jurado, M., Ljungvall, J., Mengoni, D., Napoli, D.R., Petrache, C.M., Sohler, D., Timár, J., Barrientos, D., Bednarczyk, P., Benzoni, G., Birkenbach, B., Boston, A.J., Boston, H.C., Burrows, I., Charles, L., Ciemala, M., Crespi, F.C.L., Cullen, D.M., Désesquelles, P., Domingo-Pardo, C., Eberth, J., Erduran, N., Ertürk, S., González, V., Goupil, J., Hess, H., Huyuk, T., Jungclaus, A., Korten, W., Lemasson, A., Leoni, S., Maj, A., Menegazzo, R., Million, B., Perez-Vidal, R.M., Podolyàk, Zs., Pullia, A., Recchia, F., Reiter, P., Saillant, F., Salsac, M.D., Sanchis, E., Simpson, J., Stezowski, O., Theisen, C., Zielińska, M., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

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 γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of $^{87}$Tc from the $(9/2^+_{g.s})$ state to the $( 33 / 2^+_1$) state was established based on six mutually coincident γ -ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $ℏω ≈ 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line. 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. A level scheme of $^{87}$Tc from the (9/2$^{+}_{g.s.}$) state to the (33/2$^{+}_{1}$) state was established based on 6 mutually coincident $\gamma$-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $\hbar\omega\approx 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.

Published
2021

46. Evidence for enhanced neutron-proton correlations from the level structure of the N = Z+1 nucleus Tc-87(43)44

Author

Liu, X, Cederwall, B, Qi, C, Wyss, RA, Aktas, O, Ertoprak, A, Zhang, W, Clement, E, de France, G, Ralet, D, Gadea, A, Goasduff, A, Jaworski, G, Kuti, I, Nyako, BM, Nyberg, J, Palacz, M, Wadsworth, R, Valiente-Dobon, JJ, Al-Azri, H, Nyberg, A Atac, Back, T, de Angelis, G, Doncel, M, Dudouet, J, Gottardo, A, Jurado, M, Ljungvall, J, Mengoni, D, Napoli, DR, Petrache, CM, Sohler, D, Timar, J, Barrientos, D, Bednarczyk, P, Benzoni, G, Birkenbach, B, Boston, AJ, Boston, HC, Burrows, I, Charles, L, Ciemala, M, Crespi, FCL, Cullen, DM, Desesquelles, P, Domingo-Pardo, C, Eberth, J, Erduran, N, Erturk, S, Gonzalez, V, Goupil, J, Hess, H, Huyuk, T, Jungclaus, A, Korten, W, Lemasson, A, Leoni, S, Maj, A, Menegazzo, R, Million, B, Perez-Vidal, RM, Podolyak, Zs, Pullia, A, Recchia, F, Reiter, P, Saillant, F, Salsac, MD, Sanchis, E, Simpson, J, Stezowski, O, Theisen, C, and Zielinska, M

Published
2021

47. Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

Author

Liu, X., Cederwall, B., Qi, C., Wyss, R. A., Aktas, Ertoprak, A., Zhang, W., Clément, E., De France, G., Ralet, D., Gadea, A., Goasduff, A., Jaworski, G., Kuti, I., Nyakó, B. M., Nyberg, J., Palacz, M., Wadsworth, R., Valiente-Dobón, J. J., Al-Azri, H., Ataç Nyberg, A., Bäck, T., De Angelis, G., Doncel, M., Dudouet, J., Gottardo, A., Jurado, M., Ljungvall, J., Mengoni, D., Napoli, D. R., Petrache, C. M., Sohler, D., Timár, J., Barrientos, D., Bednarczyk, P., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Burrows, I., Charles, L., Ciemala, M., Crespi, F. C.L., Cullen, D. M., Désesquelles, P., Domingo-Pardo, C., Eberth, J., Erduran, N., Ertürk, S., González, V., Goupil, J., Hess, H., Huyuk, T., Jungclaus, A., Korten, W., Lemasson, A., Leoni, S., Maj, A., Menegazzo, R., Million, B., Perez-Vidal, R. M., Podolyàk, Zs, Pullia, A., Recchia, F., Reiter, P., Saillant, F., Salsac, M. D., Sanchis, E., Simpson, J., Stezowski, O., Theisen, C., and Zielińska, M.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear Experiment
Abstract

The low-lying excited states in the neutron-deficient N=Z+1 nucleus Tc444387 have been studied via the fusion-evaporation reaction Fe54(Ar36, 2n1p)Tc87 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 γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of Tc87 from the (9/2g.s.+) state to the (33/21+) state was established based on six mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω≈0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N=44 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N=Z line.

Published
2021

48. Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus Tc444387

Author

Liu, X., primary, Cederwall, B., additional, Qi, C., additional, Wyss, R. A., additional, Aktas, Ö., additional, Ertoprak, A., additional, Zhang, W., additional, Clément, E., additional, de France, G., additional, Ralet, D., additional, Gadea, A., additional, Goasduff, A., additional, Jaworski, G., additional, Kuti, I., additional, Nyakó, B. M., additional, Nyberg, J., additional, Palacz, M., additional, Wadsworth, R., additional, Valiente-Dobón, J. J., additional, Al-Azri, H., additional, Ataç Nyberg, A., additional, Bäck, T., additional, de Angelis, G., additional, Doncel, M., additional, Dudouet, J., additional, Gottardo, A., additional, Jurado, M., additional, Ljungvall, J., additional, Mengoni, D., additional, Napoli, D. R., additional, Petrache, C. M., additional, Sohler, D., additional, Timár, J., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, A. J., additional, Boston, H. C., additional, Burrows, I., additional, Charles, L., additional, Ciemala, M., additional, Crespi, F. C. L., additional, Cullen, D. M., additional, Désesquelles, P., additional, Domingo-Pardo, C., additional, Eberth, J., additional, Erduran, N., additional, Ertürk, S., additional, González, V., additional, Goupil, J., additional, Hess, H., additional, Huyuk, T., additional, Jungclaus, A., additional, Korten, W., additional, Lemasson, A., additional, Leoni, S., additional, Maj, A., additional, Menegazzo, R., additional, Million, B., additional, Perez-Vidal, R. M., additional, Podolyàk, Zs., additional, Pullia, A., additional, Recchia, F., additional, Reiter, P., additional, Saillant, F., additional, Salsac, M. D., additional, Sanchis, E., additional, Simpson, J., additional, Stezowski, O., additional, Theisen, C., additional, and Zielińska, M., additional

Published
2021
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49. NEDA—NEutron Detector Array

Author

Valiente-Dobón, J. J., Jaworski, G., Goasduff, A., Egea, F. J., Modamio, V., Hüyük, T., Triossi, A., Jastrząb, M., Söderström, P. A., Di Nitto, A., de Angelis, G., de France, G., Erduran, N., Gadea, A., Moszyński, M., Nyberg, J., Palacz, M., Wadsworth, R., Aliaga, R., Aufranc, C., Bézard, M., Baulieu, G., Bissiato, E., Boujrad, A., Burrows, I., Carturan, S., Cocconi, P., Colucci, G., Conventi, D., Cordwell, M., Coudert, S., Deltoro, J. M., Ducroux, L., Dupasquier, T., Ertürk, S., Fabian, X., González, V., Grant, A., Hadyńska-Klęk, K., Illana, A., Jurado-Gomez, M. L., Kogimtzis, M., Lazarus, I., Legeard, L., Ljungvall, J., Pasqualato, G., Pérez-Vidal, R. M., Raggio, A., Ralet, D., Redon, N., Saillant, F., Sayğı, B., Sanchis, E., Scarcioffolo, M., Siciliano, M., Testov, D., Stezowski, O., Tripon, M., Zanon, I., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Valiente-Dobón, J.J., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Jaworski, G., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Goasduff, A., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy -- Egea, F.J., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy, Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Modamio, V., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Department of Physics, University of Oslo, Oslo, N-0316, Norway -- Hüyük, T., Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Triossi, A., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy, CERN, Switzerland -- Jastrzab, M., Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland -- Söderström, P.A., Extreme Light Infrastructureuclear Physics (ELI-NP), 077125 Bucharest-Magurele, Romania -- Di Nitto, A., Helmholtz Institute Mainz and GSI Helmholtzzentrum für Schwerionenforschund, Darmstadt, Germany -- de Angelis, G., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- de France, G., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Erduran, N., Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, 34303, Turkey -- Gadea, A., Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Moszynski, M., National Centre for Nuclear Research, 05-400 Otwock-Swierk, Poland -- Nyberg, J., Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden -- Palacz, M., Heavy Ion Laboratory, University of Warsaw, Warsaw, 02-093, Poland -- Wadsworth, R., Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom -- Aliaga, R., Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Aufranc, C., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- Bézard, M., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Baulieu, G., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- Bissiato, E., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Boujrad, A., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Burrows, I., STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom -- Carturan, S., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy -- Cocconi, P., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Colucci, G., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy -- Conventi, D., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Cordwell, M., STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom -- Coudert, S., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Deltoro, J.M., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Ducroux, L., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Dupasquier, T., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- Ertürk, S., Department of Physics, Nigde Omer Halisdemir University, Nigde, 51240, Turkey -- Fabian, X., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- González, V., Departamento de Ingeniería Electrónica, Universidad de Valencia. Avda. Universidad s/n, Burjassot, 46100, Spain -- Grant, A., STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom -- Hadynska-Klek, K., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom -- Illana, A., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Jurado-Gomez, M.L., Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Kogimtzis, M., STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom -- Lazarus, I., STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom -- Legeard, L., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Ljungvall, J., CSNSM, CNRS, IN2P3, Université Paris-Sud, Orsay, F-91405, France -- Pasqualato, G., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy -- Pérez-Vidal, R.M., Instituto de Física Corpuscular, CSIC-Universidad deValencia, E-46980 Paterna (Valencia), Spain -- Raggio, A., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Ralet, D., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Redon, N., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- Saillant, F., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Sayğı, B., Department of Physics, Faculty of Science, University of Ege, Izmir, 35100, Turkey -- Sanchis, E., Departamento de Ingeniería Electrónica, Universidad de Valencia. Avda. Universidad s/n, Burjassot, 46100, Spain -- Scarcioffolo, M., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy -- Siciliano, M., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy -- Testov, D., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Università di Padova, Padova, Italy -- Stezowski, O., Université Lyon 1, CNRS, IN2P3, IPN Lyon, Villeurbanne, F-69622, France -- Tripon, M., GANIL, CEA/DRF-CNRS/IN2P3, Bvd. Henri Becquerel, Caen, 14076, France -- Zanon, I., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Italy, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 0-Belirlenecek, Ege Üniversitesi, Valiente-Dobón, J. J., Jaworski, G., Goasduff, A., Egea, F. J., Modamio, V., Hüyük, T., Triossi, A., Jastrząb, M., Söderström, P. A., Di Nitto, A., de Angelis, G., de France, G., Erduran, N., Gadea, A., Moszyński, M., Nyberg, J., Palacz, M., Wadsworth, R., Aliaga, R., Aufranc, C., Bézard, M., Baulieu, G., Bissiato, E., Boujrad, A., Burrows, I., Carturan, S., Cocconi, P., Colucci, G., Conventi, D., Cordwell, M., Coudert, S., Deltoro, J. M., Ducroux, L., Dupasquier, T., Ertürk, S., Fabian, X., González, V., Grant, A., Hadyńska-Klęk, K., Illana, A., Jurado-Gomez, M. L., Kogimtzis, M., Lazarus, I., Legeard, L., Ljungvall, J., Pasqualato, G., Pérez-Vidal, R. M., Raggio, A., Ralet, D., Redon, N., Saillant, F., Sayğı, B., Sanchis, E., Scarcioffolo, M., Siciliano, M., Testov, D., Stezowski, O., Tripon, M., and Zanon, I.

Subjects
Nuclear and High Energy Physics, Neutron-gamma discrimination, Liquid scintillator, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Neutron detector, Digital electronic, NEDA, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 16. Peace & justice, Digital electronics, 01 natural sciences, 0103 physical sciences, Nuclear structure, Gamma-ray spectroscopy, 010306 general physics, Nuclear Experiment, Instrumentation, Nuclear and High Energy Physic
Abstract

Millan, Vicente Gonzalez/0000-0001-6014-2586; Huyuk, Tayfun/0000-0003-0597-9767; GOASDUFF, Alain/0000-0003-3453-3297; carturan, sara maria/0000-0002-6702-2867; Sison, Andres Illana/0000-0003-0274-3388; SAYGI, BAHADIR/0000-0001-5406-506X; Jaworski, Grzegorz/0000-0003-2241-0329; Aliaga, Ramon J./0000-0002-2513-7711; Vidal, Rosa Maria Perez/0000-0002-4075-4152; Di Nitto, Antonio/0000-0002-9319-366X; Lazarus, Ian/0000-0003-1235-4984; Hadynska Klek, Katarzyna/0000-0003-1244-9561; Sanchis Peris, Enrique/0000-0002-9689-9131; Moszynski, Marek/0000-0002-1267-2838; Soderstrom, Par-Anders/0000-0002-9504-2814, WOS: 000462142700010, The NEutron Detector Array, NEDA, will form the next generation neutron detection system that has been designed to be operated in conjunction with gamma-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-gamma discrimination, and high rate capabilities. It will be employed in physics campaigns in order to maximise the scientific output, making use of the different stable and radioactive ion beams available in Europe. the first implementation of the neutron detector array NEDA with AGATA 1 pi was realised at GANIL. This manuscript reviews the various aspects of NEDA., Swedish Research Council, SwedenSwedish Research Council [VR 2014-6644]; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [117F114, 114F473]; Polish National Science Centre, Poland [2017/25/B/ST2/01569, 2016/22/M/ST2/00269 COPIN-IN2P3]; COPIGAL projects, Poland; UK STFCScience & Technology Facilities Council (STFC) [ST/J000124/1, ST/L005727/1, STL005735/1, ST/P003885/1]; Generalitat ValencianaGeneralitat Valenciana [PROMETEO II/2014/019, FPA2017-84756-C4]; MICIU, Spain [PROMETEO II/2014/019, FPA2017-84756-C4]; Severo Ochoa, Spain [SEV-2014-0398]; E.C. FEDER, Spain funds, This study is supported by the Swedish Research Council, Sweden (contract number VR 2014-6644), the Scientific and Technological Research Council of Turkey (TUBITAK Project No: 117F114 and 114F473), the Polish National Science Centre, Poland, grants nos. 2017/25/B/ST2/01569 and 2016/22/M/ST2/00269 COPIN-IN2P3 and COPIGAL projects, Poland, the UK STFC under grant nos. (ST/J000124/1, ST/L005727/1, STL005735/1, ST/P003885/1), the Generalitat Valenciana and MICIU, Spain, grants PROMETEO II/2014/019, FPA2017-84756-C4, Severo Ochoa, Spain SEV-2014-0398 and by the E.C. FEDER, Spain funds.

Published
2019

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