Author: "R. Borcea" / Topic: nuclear and high energy physics - Searchworks@Jio Institute Digital Library Search Results

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1. Neutron-proton pairing in the N=Z radioactive fp-shell nuclei $^{56}$Ni and $^{52}$Fe probed by pair transfer

Author: B. Le Crom, M. Assié, Y. Blumenfeld, J. Guillot, H. Sagawa, T. Suzuki, M. Honma, N.L. Achouri, B. Bastin, R. Borcea, W.N. Catford, E. Clément, L. Cáceres, M. Caamaño, A. Corsi, G. De France, F. Delaunay, N. De Séréville, B. Fernandez-Dominguez, M. Fisichella, S. Franchoo, A. Georgiadou, J. Gibelin, A. Gillibert, F. Hammache, O. Kamalou, A. Knapton, V. Lapoux, S. Leblond, A.O. Macchiavelli, F.M. Marqués, A. Matta, L. Ménager, P. Morfouace, N.A. Orr, J. Pancin, X. Pereira-Lopez, L. Perrot, J. Piot, E. Pollacco, D. Ramos, T. Roger, F. Rotaru, A.M. Sánchez-Benítez, M. Sénoville, O. Sorlin, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J.-C. Thomas, M. Vandebrouck, 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and 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)
Subjects: Nuclear and High Energy Physics, Nuclear Theory, Direct reactions, FOS: Physical sciences, Radioactive beam, Neutron-proton pairing, 22 Física, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Cooper pairs
Abstract: The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the \textit{fp}-shell through the two-nucleon transfer reaction (p,$^3$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the \textit{fp}-shell. The transfer cross-sections for ground-state to ground-state (J=0$^+$,T=1) and to the first (J=1$^+$,T=0) state were extracted for both cases together with the transfer cross-section ratios $\sigma$(0$^+$,T=1) /$\sigma$(1$^+$,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in $^{52}$Fe, points towards a superfluid phase in the isovector channel. For the "deuteron-like" transfer, very low cross-sections to the first (J=1$^+$,T=0) state were observed both for \Ni\phe\, and \Fe\phe\, and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed., Comment: 7 pages, 4 figures
Published: 2022
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2. Probing nuclear forces beyond the nuclear drip line: the cases of $^{16}$F and $^{15}$F: A Tribute to Mahir Hussein

Author: L. Caceres, A.M. Sánchez Benítez, Igor T. Čeliković, A. Matta, D. Verney, F. Rotaru, Valdir Guimaraes, P. Adsley, O. Sorlin, J. Guillot, T. Roger, C. Portail, V. Girard-Alcindor, I. Matea, A. Georgiadou, C. Petrone, D. Pantelica, R. Borcea, D. Suzuki, O. Kamalou, V. Lapoux, Megumi Niikura, I. Stefan, J. Piot, F. Flavigny, G. D’Agata, F. de Oliveira Santos, M. Ciemala, V. Tatischeff, V. Chudoba, L. Lalanne, C. Stodel, J. C. Thomas, N. Goyal, M. Stanoiu, C. Fougeres, S. Grévy, F. Negoita, N. de Séréville, L. Perrot, G. Dumitru, M. Assie, A. Meyer, J. C. Angelique, Marlete Assunção, Nicolas Michel, F. Hammache, D. Beaumel, S. Franchoo, Predrag Ujić, Dieter Ackermann, Shoko Koyama, F. de Grancey, J. Kiener, E. Berthoumieux, P. Morfouace, J. Mrazek, K. Subotic, 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), 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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 Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Elastic scattering, Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Asymmetry, Excited state, 0103 physical sciences, Nuclear force, Mirror nuclei, Atomic physics, 010306 general physics, Wave function, Nuclear Experiment, media_common
Abstract: The unbound proton-rich nuclei $$^{16}$$ F and $$^{15}$$ F are investigated experimentally and theoretically. Several experiments using the resonant elastic scattering method were performed at GANIL with radioactive beams to determine the properties of the low lying states of these nuclei. Strong asymmetry between $$^{16}$$ F– $$^{16}$$ N and $$^{15}$$ F– $$^{15}$$ C mirror nuclei is observed. The strength of the $$nucleon-nucleon$$ effective interaction involving the loosely bound proton in the $$s_{1/2}$$ orbit is significantly modified with respect to their mirror nuclei $$^{16}$$ N and $$^{15}$$ C. The reduction of the effective interaction is estimated by calculating the interaction energies with a schematic zero-range force. It is found that, after correcting for the effects due to changes in the radial distribution of the single-particle wave functions, the mirror symmetry of the $$n-p$$ interaction is preserved between $$^{16}$$ F and $$^{16}$$ N, while a difference of 63% is measured between the $$p-p$$ versus $$n-n$$ interactions in the second excited state of $$^{15}$$ F and $$^{15}$$ C nuclei. Several explanations are proposed.
Published: 2021
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3. Low-lying single-particle structure of 17C and the N = 14 sub-shell closure

Author: Q. Deshayes, N. Curtis, F. Rotaru, Maria Fisichella, Franck Delaunay, S. Bailey, X. Pereira-López, Takaharu Otsuka, M. Assié, L. Caceres, F. M. Marqués, S. Franchoo, B. Le Crom, Julien Gibelin, Eric Clément, L. Perrot, A. Gillibert, A. Corsi, P. Morfouace, J. Walshe, S. Leblond, I. Stefan, G. F. Grinyer, J. C. Thomas, N. de Séréville, Daisuke Suzuki, Y. Blumenfeld, J. Piot, A. M. Moro, A. Matta, F. Farget, D. Ramos, R. Borcea, J. Lois-Fuentes, C. Wheldon, M. Stanoiu, N. L. Achouri, B. Bastin, C. Stodel, E. C. Pollacco, W. N. Catford, N. A. Orr, O. Sorlin, V. Lapoux, T. Kokalova, Robin Smith, Toshio Suzuki, T. Roger, Marine Vandebrouck, B. Fernández-Domínguez, Natalia Timofeyuk, A. Knapton, M. Sénoville, J. Pancin, M. Caamaño, Martin Freer, J. A. Lay, F. Hammache, C. Rodriguez-Tajes, O. Kamalou, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Consejo de Instalaciones Científicas y Tecnológicas de UKRI. Reino Unido, Agencia Estatal de Investigación. España, Ministerio de Economia, Industria y Competitividad (MINECO). España, Ministerio de Ciencia, Innovación y Universidades (MICINN). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), European Union (UE). H2020, Universidade de Santiago de Compostela [Spain] (USC ), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)
Subjects: Physics, Nuclear and High Energy Physics, Valence (chemistry), 010308 nuclear & particles physics, SHELL model, Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Molecular physics, lcsh:QC1-999, Excited state, 0103 physical sciences, Bound state, Neutron, Halo, Nuclear Experiment (nucl-ex), 010306 general physics, Ground state, Nuclear Experiment, ComputingMilieux_MISCELLANEOUS, lcsh:Physics
Abstract: The first investigation of the single-particle structure of the bound states of 17C, via the d(16C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N = 14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the {\nu}1d3/2 strength is carried by unbound states. With a dominant l = 0 valence neutron configuration and a very low separation energy, the 1/2+ excited state is a one-neutron halo candidate., Comment: 7 pages, 5 figures, Accepted for publication in Physics Letters B
Published: 2020
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4. The MUGAST-AGATA-VAMOS campaign: Set-up and performances

Author: D. Mengoni, C. Nicolle, F. Flavigny, F. Noury, N. de Séréville, J.S. Rojo, L. Ménager, J. Goupil, A. Goasduff, F. de Oliveira, F. Hammache, M. Assié, A. Korichi, W. N. Catford, J. Dudouet, L. Lalanne, E. Rindel, L. Vatrinet, Y. Blumenfeld, G. Frémont, V. Girard-Alcindor, D. Ramos, D. Brugnara, A. Matta, B. Fernández-Domínguez, A. Raggio, F. Legruel, F. Didierjean, S. Leblond, P. R. John, A. Lefevre, C. Fougères, M. Stanoiu, C. Lenain, A. Gottardo, I. Zanon, I. Stefan, A. Giret, E. Rauly, C. Aa. Diget, R. Borcea, Franck Delaunay, J. Casal, F. Galtarossa, M. Siciliano, K. Rezynkina, Didier Beaumel, B. Million, Eric Clément, A. Lemasson, 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), 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-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, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Université Claude Bernard Lyon 1 (UCBL), and 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)
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Photon, FOS: Physical sciences, Kinematics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Spectrometer, Particle identification, symbols.namesake, Optics, 0103 physical sciences, Solid-state detectors, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Electronics, Nuclear Experiment (nucl-ex), 010306 general physics, Spectroscopy, Nuclear Experiment, Instrumentation, Physics, 010308 nuclear & particles physics, business.industry, Direct nuclear reactions, Triple coincidences, Instrumentation and Detectors (physics.ins-det), symbols, AGATA, business, Doppler effect
Abstract: The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular {\gamma}-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform exclusive measurements of direct reactions with the radioactive beams from the SPIRAL1 facility. The performance of the set-up is described through its commissioning and two examples of transfer reactions measured during the campaign. High accuracy spectroscopy of the nuclei of interest, including cross-sections and angular distributions, is achieved through the triple-coincidence measurement. In addition, the correction from Doppler effect of the {\gamma}-ray energies is improved by the detection of the light particles and the use of two-body kinematics and a full rejection of the background contributions is obtained through the identification of heavy residues. Moreover, the system can handle high intensity beams (up to 108 pps). The particle identification based on the measurement of the time-of-flight between MUGAST and VAMOS and the reconstruction of the trajectories is investigated., Comment: 13 pages, 18 figures
Published: 2021
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5. Re-examining the transition into the N = 20 island of inversion: Structure of 30 Mg

Author: M. Labiche, W. N. Catford, A. Banu, Roy Crawford Lemmon, N. A. Orr, L. Gaudefroy, M. Caamaño, F. Negoita, Sebastian Heil, Jason I. Brown, L. Trache, Martin Freer, J. S. Thomas, B. Bastin, N. Patterson, R. Borcea, M. Staniou, Franck Delaunay, N. L. Achouri, S. Franchoo, G. L. Wilson, B. Fernández-Domínguez, Naofumi Tsunoda, Takaharu Otsuka, J. C. Angélique, Marina Petri, E. S. Paul, Stefanos Paschalis, A. O. Macchiavelli, Marielle Chartier, N. I. Ashwood, B. Laurent, Michael Taylor, C. Rodriguez-Tajes, P. Roussel-Chomaz, Alfredo Poves, B. Pietras, UAM. Departamento de Física Teórica, Instituto de Física Teórica (IFT), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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), Universidade de Santiago de Compostela. Departamento de Física de Partículas, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de physique corpusculaire de Caen ( LPCC ), Université de Caen Normandie ( UNICAEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Ecole Nationale Supérieure d'Ingénieurs de Caen ( ENSICAEN ), Normandie Université ( NU ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de Physique Nucléaire d'Orsay ( IPNO ), 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 ), Grand Accélérateur National d'Ions Lourds ( GANIL ), and 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 )
Subjects: N=20, Nuclear and High Energy Physics, Nuclear Theory, Mg, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Molecular physics, np−nh, Nuclear Theory (nucl-th), Single-neutron, Intermediate energy, 0103 physical sciences, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear theory, Nuclear Experiment, Physics, Decay scheme, Manchester Cancer Research Centre, 010308 nuclear & particles physics, Island of inversion, ResearchInstitutes_Networks_Beacons/mcrc, Física, Parity (physics), lcsh:QC1-999, γ-ray decay scheme, Z=12, Ground state, Excitation, lcsh:Physics
Abstract: Intermediate energy single-neutron removal from $^{31}$Mg has been employed to investigate the transition into the N=20 island of inversion. Levels up to 5~MeV excitation energy in $^{30}$Mg were populated and spin-parity assignments were inferred from the corresponding longitudinal momentum distributions and $\gamma$-ray decay scheme. Comparison with eikonal-model calculations also permitted spectroscopic factors to be deduced. Surprisingly, the 0$^{+}_{2}$ level in $^{30}$Mg was found to have a strength much weaker than expected in the conventional picture of a predominantly $2p - 2h$ intruder configuration having a large overlap with the deformed $^{31}$Mg ground state. In addition, negative parity levels were identified for the first time in $^{30}$Mg, one of which is located at low excitation energy. The results are discussed in the light of shell-model calculations employing two newly developed approaches with markedly different descriptions of the structure of $^{30}$Mg. It is concluded that the cross-shell effects in the region of the island of inversion at Z=12 are considerably more complex than previously thought and that $np - nh$ configurations play a major role in the structure of $^{30}$Mg., Comment: Physics Letters B, Volume 779, 10 April 2018, Pages 124-129
Published: 2018
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6. The FAZIA project in Europe: R&D phase

Author: Zbigniew Sosin, E. Vient, F. Gramegna, Paola Marini, F. Salomon, Mariano Vigilante, G. Ademard, Luca Morelli, Gabriele Pasquali, G. Pastore, A. Ordine, Giovanni Casini, L. Roscilli, M. Falorsi, M. F. Rivet, P. Edelbruck, Ismael Martel, R. Giordano, C. Pain, R. Bougault, H. Petrascu, A. Chbihi, G. Brulin, L. Lavergne, Alessandro Olmi, O. Lopez, M. Pârlog, R. Rocco, A.J. Kordyasz, N. Le Neindre, A. Wieloch, C. Spitaels, G. Spadaccini, L. Bardelli, B. Bougard, S. Energico, E. Vanzanella, J.D. Frankland, Krzysztof Korcyl, R. Alba, A. Meoli, E. Piasecki, E. Bonnet, R. Borcea, M. Boisjoli, J.A. Dueñas, L. Ciolacu, M. Kajetanowicz, J. Łukasik, M. Cruceru, A. Boiano, S. Serra, T. Twaróg, Marek Palka, Piotr Pawłowski, K. Ga̧sior, G. Tobia, F. Negoita, B. De Fazio, E. Scarlini, P. Kulig, Andrea Stefanini, I. Cruceru, C. Huss, E. Wanlin, M. Petcu, B. Borderie, A. Grzeszczuk, Y. Merrer, S. Carboni, Simone Valdré, P. Di Meo, Giacomo Poggi, V. Seredov, A. Vanzanella, W. Zipper, G. Tortone, C. Maiolino, D. Sierpowski, G. Pontoriere, P. Desrues, M. Degerlier, Domenico Santonocito, B. D’Aquino, M. Guerzoni, F. Cassese, E. Galichet, G. Passeggio, Giuseppe Vitiello, A. Anastasio, E. Legouée, M. Cinausero, Sandro Barlini, V. Masone, Maurizio Bini, H. Hamrita, Silvia Piantelli, E. Rauly, G. Paduano, D. Gruyer, E. Rosato, M. Bruno, Tomasz Kozik, S. Barbey, C. Cassese, Tommaso Marchi, R. Bougault, G. Poggi, S. Barlini, B. Borderie, G. Casini, A. Chbihi, N. Le Neindre, M. Pârlog, G. Pasquali, S. Piantelli, Z. Sosin, G. Ademard, R. Alba, A. Anastasio, S. Barbey, L. Bardelli, M. Bini, A. Boiano, M. Boisjoli, E. Bonnet, R. Borcea, B. Bougard, G. Brulin, M. Bruno, S. Carboni, C. Cassese, F. Cassese, M. Cinausero, L. Ciolacu, I. Cruceru, M. Cruceru, B. D’Aquino, B. Fazio, M. Degerlier, P. Desrue, P. Meo, J. A. Dueña, P. Edelbruck, S. Energico, M. Falorsi, J. D. Frankland, E. Galichet, K. Gasior, F. Gramegna, R. Giordano, D. Gruyer, A. Grzeszczuk, M. Guerzoni, H. Hamrita, C. Hu, M. Kajetanowicz, K. Korcyl, A. Kordyasz, T. Kozik, P. Kulig, L. Lavergne, E. Legouée, O. Lopez, J. Łukasik, C. Maiolino, T. Marchi, P. Marini, I. Martel, V. Masone, A. Meoli, Y. Merrer, L. Morelli, F. Negoita, A. Olmi, A. Ordine, G. Paduano, C. Pain, M. Pałka, G. Passeggio, G. Pastore, P. Pawłowski, M. Petcu, H. Petrascu, E. Piasecki, G. Pontoriere, E. Rauly, M. F. Rivet, R. Rocco, E. Rosato, L. Roscilli, E. Scarlini, F. Salomon, D. Santonocito, V. Seredov, S. Serra, D. Sierpowski, G. Spadaccini, C. Spitael, A. A. Stefanini, G. Tobia, G. Tortone, T. Twaróg, S. Valdré, A. Vanzanella, E. Vanzanella, E. Vient, M. Vigilante, G. Vitiello, E. Wanlin, A. Wieloch, W. Zipper, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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), Conservatoire National des Arts et Métiers [CNAM] (CNAM), FAZIA, R., Bougault, G., Poggi, S., Barlini, B., Borderie, G., Casini, A., Chbihi, N., Le Neindre, M., Pârlog, G., Pasquali, S., Piantelli, Z., Sosin, G., Ademard, R., Alba, A., Anastasio, S., Barbey, L., Bardelli, M., Bini, A., Boiano, M., Boisjoli, E., Bonnet, R., Borcea, B., Bougard, G., Brulin, M., Bruno, S., Carboni, C., Cassese, F., Cassese, M., Cinausero, L., Ciolacu, I., Cruceru, M., Cruceru, B., D’Aquino, DE FAZIO, Benedetto, M., Degerlier, P., Desrue, P., Di Meo, J. A., Dueña, P., Edelbruck, S., Energico, M., Falorsi, J. D., Frankland, E., Galichet, K., Gasior, F., Gramegna, Giordano, Raffaele, D., Gruyer, A., Grzeszczuk, M., Guerzoni, H., Hamrita, C., Hu, M., Kajetanowicz, K., Korcyl, A., Kordyasz, T., Kozik, P., Kulig, L., Lavergne, E., Legouée, O., Lopez, J., Lukasik, C., Maiolino, T., Marchi, P., Marini, I., Martel, V., Masone, A., Meoli, Y., Merrer, L., Morelli, F., Negoita, A., Olmi, A., Ordine, G., Paduano, C., Pain, M., Palka, G., Passeggio, P., Pawlowski, M., Petcu, H., Petrascu, E., Piasecki, G., Pontoriere, E., Rauly, M. F., Rivet, R., Rocco, Rosato, Elio, L., Roscilli, E., Scarlini, F., Salomon, D., Santonocito, V., Seredov, S., Serra, D., Sierpowski, Spadaccini, Giulio, C., Spitael, A. A., Stefanini, G., Tobia, G., Tortone, T., Twaróg, S., Valdré, A., Vanzanella, E., Vanzanella, E., Vient, Vigilante, Mariano, G., Vitiello, E., Wanlin, A., Wieloch, W., Zipper, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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 HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)
Subjects: Physics, NUCLEAR REACTIONS, Nuclear and High Energy Physics, Silicon, SCINTILLATION DETECTORS, Physics::Instrumentation and Detectors, Nuclear engineering, Detector, SILICON DETECTORS, chemistry.chemical_element, Reaction products, Nanotechnology, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Particle detector, Particle identification, Semiconductor detector, chemistry, Scintillation counter, Hermetic detector, PARTICLE IDENTIFICATION
Abstract: The goal of the FAZIA Collaboration is the design of a new-generation 4π detector array for heavy-ion collisions with radioactive beams. This article summarizes the main results of the R&D phase, devoted to the search for significant improvements of the techniques for charge and mass identification of reaction products. This was obtained by means of a systematic study of the basic detection module, consisting of two transmission-mounted silicon detectors followed by a CsI(Tl) scintillator. Significant improvements in ΔE-E and pulse-shape techniques were obtained by controlling the doping homogeneity and the cutting angles of silicon and by putting severe constraints on thickness uniformity. Purposely designed digital electronics contributed to identification quality. The issue of possible degradation related to radiation damage of silicon was also addressed. The experimental activity was accompanied by studies on the physics governing signal evolution in silicon. The good identification quality obtained with the prototypes during the R&D phase, allowed us to investigate also some aspects of isospin physics, namely isospin transport and odd-even staggering. Now, after the conclusion of the R&D period, the FAZIA Collaboration has entered the demonstrator phase, with the aim of verifying the applicability of the devised solutions for the realization of a larger-scale experimental set-up.
Published: 2014
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7. New Prompt Fission γ-ray Data in Response to the OECD/NEA High Priority Request

Author: F.-J. Hambsch, László Szentmiklósi, Andreas Oberstedt, Marzio Vidali, T. Bryś, T. Martinez Perez, Stephan Oberstedt, R. Billnert, Alf Göök, Tamás Belgya, R. Borcea, Z. Kish, and W. Geerts
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Fission, Gamma ray, Nuclear data
Abstract: In this paper we report about new prompt fission gamma-ray measurements, which we have performed with highly efficient gamma-ray detectors based on lanthanide-halide crystals, aiming at very fast timing in conjunction with a good energy resolution. About four decades after the experiments were performed, whose results are still used for current evaluations, we present new spectral prompt fission gamma-ray data from the reactions Cf-252(SF) and U-235(n(th),f). Based on our new findings we recommend to replace the current ENDF/B-VII. 1 evaluation for Cf-252(SF) and U-235(n(th),f) as well as to perform new measurements for U-238(n,f) and Pu-241(n,f).
Published: 2014
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8. Comparison of charged particle identification using pulse shape discrimination and ΔE−E methods between front and rear side injection in silicon detectors

Author: A. Grzeszczuk, O. Lopez, P. Edelbruck, S. Carboni, R. Alba, V. L. Kravchuk, Sandro Barlini, M. Bruno, Gabriele Pasquali, Tommaso Marchi, Andrea Stefanini, T. Twaróg, Alessandro Olmi, F. Gramegna, Ivano Lombardo, I. Cruceru, M. Pârlog, Elio Rosato, Silvia Piantelli, L. Bardelli, Mariano Vigilante, G. Spadaccini, M. Petcu, R. Bougault, Tomasz Kozik, M. Degerlier, E. Vient, E. Bonnet, M. F. Rivet, B. Borderie, H. Petrascu, A. Chbihi, K. Ga¸sior, N. Le Neindre, Maurizio Bini, J.D. Frankland, Luca Morelli, J.A. Dueñas, Domenico Santonocito, R. Borcea, G. Baiocco, D. Gruyer, Giovanni Casini, F. Negoita, M. Cinausero, F. Salomon, E. Legouée, M. Kamuda, Giacomo Poggi, C. Maiolino, and Paola Marini
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Silicon, 010308 nuclear & particles physics, business.industry, Detector, chemistry.chemical_element, 01 natural sciences, Charged particle, Ion, Pulse (physics), Optics, chemistry, Electric field, Rise time, 0103 physical sciences, 010306 general physics, business, Instrumentation
Abstract: The response of silicon-silicon-CsI(Tl) telescopes, developed within the FAZIA collaboration, to fragments produced in nuclear reactions 84 Krþ 120-124 Sn at 35 A MeV, has been used to study ion identification methods. Two techniques are considered for the identification of the nuclear products in the silicon stages. The standard DEE one requires signals induced in two detection layers by ions punching through the first one. Conversely, the digital Pulse Shape Analysis (PSA) allows the identification of ions stopped in the first silicon layer. The capabilities of these two identification methods have been compared for different mountings of the silicons, i.e. rear (particles entering through the low electric field side) or front (particles entering through the high electric field side) side injection. The DEE identification method gives exactly the same results in both configurations. At variance, the pulse shape discrimination is very sensitive to the detector mounting. In case of rear side injection, the identification with the ''energy vs. charge rise time'' PSA method presents energy thresholds which are significantly lower than in the case of front side injection. & 2012 Elsevier B.V. All rights reserved.
Published: 2013
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9. Spectroscopy of $^{35}$P using the one-proton knockout reaction

Author: T. Roger, F. Rotaru, C. Borcea, A. Mutschler, D. Weisshaar, Kathrin Wimmer, A. Lemasson, O. Sorlin, F. Recchia, Marine Vandebrouck, D. Bazin, Alexandra Gade, J. A. Tostevin, H. Iwasaki, S. R. Stroberg, E. Khan, M. Stanoiu, A. Lepailleur, R. Borcea, Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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), NSCL and Department of Physics and Astronomy (NSCL), NSCL, National Institut for Nuclear Physics and Engineering (IFIN HH), National Institut for Nuclear Physics and Engineering, TRIUMF [Vancouver], Department of Physics, University of Surrey, University of Surrey (UNIS), 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), and 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)
Subjects: Physics, Angular momentum, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Projectile, Nuclear Theory, FOS: Physical sciences, Parity (physics), 24.50.+g,25.60.Gc,21.10.Jx,25.60.Lg, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 3. Good health, Cardinal point, Excited state, 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment (nucl-ex), 010306 general physics, Spectroscopy, Nuclear Experiment, Excitation
Abstract: The structure of $^{35}$P was studied with a one-proton knockout reaction at88~MeV/u from a $^{36}$S projectile beam at NSCL. The $\gamma$ rays from thedepopulation of excited states in $^{35}$P were detected with GRETINA, whilethe $^{35}$P nuclei were identified event-by-event in the focal plane of theS800 spectrograph. The level scheme of $^{35}$P was deduced up to 7.5 MeV using$\gamma-\gamma$ coincidences. The observed levels were attributed to protonremovals from the $sd$-shell and also from the deeply-bound $p\_{1/2}$ orbital.The orbital angular momentum of each state was derived from the comparisonbetween experimental and calculated shapes of individual ($\gamma$-gated)parallel momentum distributions. Despite the use of different reactions andtheir associate models, spectroscopic factors, $C^2S$, derived from the$^{36}$S $(-1p)$ knockout reaction agree with those obtained earlier from$^{36}$S($d$,\nuc{3}{He}) transfer, if a reduction factor $R\_s$, as deducedfrom inclusive one-nucleon removal cross sections, is applied to the knockout transitions.In addition to the expected proton-hole configurations, other states were observedwith individual cross sections of the order of 0.5~mb. Based on their shiftedparallel momentum distributions, their decay modes to negative parity states,their high excitation energy (around 4.7~MeV) and the fact that they were notobserved in the ($d$,\nuc{3}{He}) reaction, we propose that they may resultfrom a two-step mechanism or a nucleon-exchange reaction with subsequent neutronevaporation. Regardless of the mechanism, that could not yet be clarified, thesestates likely correspond to neutron core excitations in \nuc{35}{P}. Thisnewly-identified pathway, although weak, offers the possibility to selectivelypopulate certain intruder configurations that are otherwise hard to produceand identify., Comment: 5 figures, 1 table, accepted for publication in Physical Review C
Published: 2016
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10. An above-barrier narrow resonance in F-15

Author: F. de Grancey, M. Fadil, Marek Ploszajczak, Nicolas Michel, N. A. Smirnova, I. Stefan, M. Assié, F. de Oliveira Santos, V. Chudoba, J. M. Daugas, R. Borcea, J. C. Thomas, E. Berthoumieux, J. C. Angélique, Thomas Davinson, O. Roig, Predrag Ujić, Igor T. Čeliković, L. Perrot, F. Negoita, A. Mercenne, F. Rotaru, M. G. Pellegriti, C. Stodel, G. Dumitru, G. Randisi, M. G. Saint Laurent, I. Ray, A. Lefebvre-Schuhl, R. Wolski, S. Grévy, A. Buta, O. Sorlin, J. Okolowicz, Vincent Tatischeff, J. Mrazek, M. Stanoiu, Jürgen Kiener, D. Pantelica, K. Subotic, 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-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), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Proton, Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Elastic proton scattering, lifetimes, width, 01 natural sciences, Unbound States, 0103 physical sciences, Unbound states, medicine, Neutron, Nuclear Experiment (nucl-ex), 010306 general physics, Wave function, Nuclear Experiment, 15F, Elastic scattering, Physics, Valence (chemistry), 25.60.-t, 25.70.Ef, 25.40.Cm, 21.10.-k, 27.20.+n, 21.10.Tg, 010308 nuclear & particles physics, F-15, Resonance, Overbarrier resonance, lcsh:QC1-999, width, medicine.anatomical_structure, Excited state, Resonances, lifetimes, Physics::Accelerator Physics, Atomic physics, Elastic proton scattering, Nucleus, lcsh:Physics
Abstract: Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance at E$\_R$=4.757(6)(10)~MeV with a width of $\Gamma$=36(5)(14)~keV was measured for the first time with high precision. The structure of this narrow above-barrier state in a nucleus located two neutrons beyond the proton drip line was investigated using the Gamow Shell Model in the coupled channel representation with a $^{12}$C core and three valence protons. It is found that it is an almost pure wave function of two quasi-bound protons in the $2s\_{1/2}$ shell., Comment: 8 pages, 2 figures, 1 table, Submitted to Phys. Lett. B
Published: 2016
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11. The decay of proton-rich nuclei in the mass region

Author: S. Czajkowski, A. Bey, A. J. Boston, F. Becker, M. Caamaño, F. de Oliveira Santos, Robert Grzywacz, S. Grévy, P. Mayet, Margareta Hellström, C. Dossat, F. Aksouh, Marielle Chartier, V. A. Maslov, C. Moore, M. Stanoiu, Georgi P. Georgiev, D. Cortina, A Fleury, J. Giovinazzo, M. Pfützner, J. C. Thomas, C. Mazzocchi, M. J. Lopez Jimenez, B. Blank, D. Karamanis, I. Matea, C. Borcea, Michio Honma, Z. Janas, J. Kurcewicz, M. Lewitowicz, G. Canchel, N. Adimi, I. Stefan, R. Borcea, and M.S. Pravikoff
Subjects: Physics, Nuclear and High Energy Physics, Decay scheme, Proton, 010308 nuclear & particles physics, Branching fraction, Nuclear Theory, Half-life, 01 natural sciences, 7. Clean energy, Mass formula, Nuclear physics, 0103 physical sciences, Isobaric process, Atomic physics, Proton emission, Nuclear Experiment, 010306 general physics, Multiplet
Abstract: In a series of experiments at the SISSI/LISE3 facility of GANIL conducted between 1999 and 2004, we have collected decay information for proton-rich nuclei between {sup 36}Ca and {sup 56}Zn. The data allowed us to study the decay properties of 26 nuclei. The main experimental information obtained for all nuclei is their {beta}-decay half-life and their total {beta}-delayed proton emission branching ratio. For many nuclei, individual proton groups and {gamma} rays were identified and allowed us to establish first partial decay schemes for some of the nuclei studied. In addition, mass-excess values have been determined for some of the nuclei by means of the isobaric multiplet mass equation. For {sup 50}Ni, the decay via {beta}-delayed two-proton emission could be tentatively identified. The decay of {sup 49}Ni allowed for the first time to identify the first 2{sup +} state in {sup 48}Fe. The experimental data are confronted to model predictions for the half-life and the mass-excess values.
Published: 2007
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12. Spectroscopy ofNa28: Shell evolution toward the drip line

Author: L. Gaudefroy, E. Lunderberg, T. Redpath, J. Lloyd, E. Khan, A. Westerberg, M. Stanoiu, A. Lepailleur, C. Langer, D. Barofsky, Alexandra Gade, C. Bancroft, T.R. Baugher, O. Llidoo, O. Sorlin, S. Saenz, B. Bastin, L. Caceres, F. Negoita, V. Bildstein, V. M. Bader, M. G. Saint-Laurent, F. de Oliveira Santos, F. Recchia, A. Mutschler, J. C. Thomas, S. Grévy, C. Borcea, D. Bazin, S. R. Stroberg, F. Rotaru, G. Perdikakis, Kathrin Wimmer, G. F. Grinyer, D. Smalley, T. Kröll, Marine Vandebrouck, Dóra Sohler, R. Borcea, D. Weisshaar, H. Iwasaki, T. Roger, B. A. Brown, and A. Lemasson
Subjects: Physics, Nuclear and High Energy Physics, Superconducting cyclotron, 010308 nuclear & particles physics, Excited state, 0103 physical sciences, Binding energy, SHELL model, Atomic physics, 010306 general physics, Spectroscopy, 01 natural sciences, Spectral line
Abstract: Excited states have been studied in $^{28}\mathrm{Na}$ using the $\ensuremath{\beta}$-decay of implanted $^{28}\mathrm{Ne}$ ions at the Grand Acc\'el\'erateur National d'Ions Lourds/LISE as well as the in-beam $\ensuremath{\gamma}$-ray spectroscopy at the National Superconducting Cyclotron Laboratory/S800 facility. New states of positive $({J}^{\ensuremath{\pi}}={3}^{+},{4}^{+})$ and negative $({J}^{\ensuremath{\pi}}={1}^{\ensuremath{-}}--{5}^{\ensuremath{-}})$ parity are proposed. The former arise from the coupling between $0{d}_{5/2}$ protons and $0{d}_{3/2}$ neutrons, while the latter are attributable to couplings of $0{d}_{5/2}$ protons with $1{p}_{3/2}$ or $0{f}_{7/2}$ neutrons. While the relative energies between the ${J}^{\ensuremath{\pi}}={1}^{+}--{4}^{+}$ states are well reproduced with the USDA interaction in the $N=17$ isotones, a progressive shift in the ground-state binding energy (by about 500 keV) is observed between $^{26}\mathrm{F}$ and $^{30}\mathrm{Al}$. This points to a possible change in the proton-neutron $0{d}_{5/2}\text{\ensuremath{-}}0{d}_{3/2}$ effective interaction when moving from stability to the drip line. The presence of ${J}^{\ensuremath{\pi}}={1}^{\ensuremath{-}}--{4}^{\ensuremath{-}}$ negative-parity states around 1.5 MeV as well as of a candidate for a ${J}^{\ensuremath{\pi}}={5}^{\ensuremath{-}}$ state around 2.5 MeV give further support to the collapse of the $N=20$ gap and to the inversion between the neutron $0{f}_{7/2}$ and $1{p}_{3/2}$ levels below $Z=12$. These features are discussed in the framework of shell-model and energy-density-functional calculations, leading to predicted negative-parity states in the low-energy spectra of the $^{26}\mathrm{F}$ and $^{25}\mathrm{O}$ nuclei.
Published: 2015
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13. Evolution of single-particle strength in neutron-rich 71Cu

Author: C. Louchart, G. Marquínez-Durán, P. Morfouace, M. Assié, S. Franchoo, S. Boissinot, D. Beaumel, F. Azaiez, D. Mengoni, J. A. Scarpaci, D. R. Napoli, R. Borcea, Zsolt Dombrádi, Kamila Sieja, L. Lefebvre, A. Matta, Zs. Vajta, F. Recchia, A. Lepailleur, C. Stodel, M. Niikura, Ismael Martel, N. de Séréville, G. Burgunder, B. Fernández-Domínguez, L. Caceres, O. Sorlin, I. Stefan, O. Kamalou, A. M. Sánchez-Benítez, S. Grévy, L. Nalpas, J. Elseviers, A. Gillibert, V. Lapoux, I. Matea, C. Borcea, Fairouz Hammache, M. Stanoiu, Dóra Sohler, J. C. Thomas, S. Giron, Institut de Physique Nucléaire d'Orsay (IPNO), 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), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Universidade de Santiago de Compostela [Spain] (USC ), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-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), GANILEXP, Universidade de Santiago de Compostela. Departamento de Física de Partículas, 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), 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 Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Proton, Fizikai tudományok, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, lcsh:QC1-999, Nuclear physics, Cross section (physics), Distribution (mathematics), Atomic orbital, Természettudományok, Particle, Neutron, Atomic physics, Born approximation, Nuclear Experiment, Radioactive beam, lcsh:Physics
Abstract: The strength functions of the πf5/2πf5/2, πp3/2πp3/2 and πf7/2πf7/2 orbitals in neutron-rich 71Cu were obtained in a 72Zn(d,3He)71Cu proton pick-up reaction in inverse kinematics using a radioactive beam of 72Zn at 38 MeV/u. A dedicated set-up was developed to overcome the experimental challenges posed by the low cross section of the reaction and the low energy of the outgoing 3He particles. The excitation-energy spectrum was reconstructed and spectroscopic factors were obtained after analysis of the angular distributions with the finite-range Distorted-Wave Born Approximation (DWBA). The results show that unlike for the πf5/2πf5/2 orbital and contrary to earlier interpretation, the πf7/2πf7/2 single-particle strength distribution is not appreciably affected by the addition of neutrons beyond N=40N=40., The authors are thankful to the Ganil accelerator staff, informatics service and to the IPN design office. We are grateful for the grant of the Romanian National Authority for Scientific Research, CNCS - UEFISCDI, project number PN-II-ID-PCE-2011-3-048, to the grant FPA2010-22131-C02-01 from the Spanish government and to the OTKA contract No. K100835.
Published: 2015
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14. Nuclear structure studies of $^{24}$F

Author: Jason D. Holt, Zs. Fueloep, J. C. Thomas, J. Mrazek, B. Bastin, G. F. Grinyer, F. Azaiez, M. Stanoiu, S. Grévy, C. N. Timis, D. Guillemaud-Mueller, Dóra Sohler, G. Sletten, F. Negoita, M. G. Saint-Laurent, Heiko Hergert, M. Lewitowicz, H. Savajols, L. Gaudefroy, Achim Schwenk, János Timár, Marie-Geneviève Porquet, F. Rotaru, Zs. Dombrádi, Zs. Podolyák, C. Borcea, A. Lepailleur, F. De Oliveira, R. Borcea, L. Caceres, Andras Kerek, S. M. Lukyanov, Ch. Bourgeois, B. A. Brown, A. Krasznahorkay, O. Sorlin, Zs. Vajta, Z. Elekes, P. Roussel-Chomaz, Scott Bogner, F. Ibrahim, Yu. E. Penionzhkevich, 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), Institut de Physique Nucléaire d'Orsay (IPNO), 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), National Institut for Nuclear Physics and Engineering (IFIN HH), National Institut for Nuclear Physics and Engineering, National Superconducting Cyclotron Laboratory (NSCL), Michigan State University [East Lansing], Michigan State University System-Michigan State University System, Helmholtz zentrum für Schwerionenforschung GmbH (GSI), TRIUMF [Vancouver], Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Flerov Laboratory of Nuclear Reactions [Dubna] (FLNR), Joint Institute for Nuclear Research (JINR), University of Surrey (UNIS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Niels Bohr Institute [Copenhagen] (NBI), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), GANILEXP, 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 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), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)
Subjects: Nuclear and High Energy Physics, Nuclear Theory, Astrophysics::High Energy Astrophysical Phenomena, SHELL model, FOS: Physical sciences, Fizikai tudományok, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Nuclear Theory (nucl-th), Fragmentation (mass spectrometry), Természettudományok, 0103 physical sciences, medicine, Nuclear Experiment (nucl-ex), 010306 general physics, Spectroscopy, Nuclear Experiment, Nuclear theory, Physics, 21.60.Cs, 23.20.Lv, 27.40.+z, 010308 nuclear & particles physics, Nuclear structure, Beta decay, medicine.anatomical_structure, Atomic physics, Nucleus
Abstract: The structure of the $^{24}$F nucleus has been studied at GANIL using the $\beta$ decay of $^{24}$O and the in-beam $\gamma$-ray spectroscopy from the fragmentation of projectile nuclei. Combining these complementary experimental techniques, the level scheme of $^{24}$F has been constructed up to 3.6 Mev by means of particle-$\gamma$ and particle-$\gamma\gamma$ coincidence relations. Experimental results are compared to shell-model calculations using the standard USDA and USDB interactions as well as ab-initio valence-space Hamiltonians calculated from the in-medium similarity renormalization group based on chiral two- and three-nucleon forces. Both methods reproduce the measured level spacings well, and this close agreement allows unidentified spins and parities to be consistently assigned., Comment: 5 figures, 2 tables
Published: 2015
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15. Yields of neutron-rich rubidium and cesium isotopes from fast-neutron induced fission of 238U, obtained by studying their release from a thick ISOL target

Author: Ulli Köster, L. Stroe, A. Joinet, Karl Kratz, M. Ducourtieux, L.B. Tecchio, C. Donzaud, F. Ibrahim, R. Borcea, C. Bourgeois, K. Peräjärvi, O. Bajeat, B. Roussière, C. Lau, B. Pfeiffer, D. Guillemaud-Mueller, O. Perru, J. Lettry, A.C. Mueller, F. Hosni, E. Fioretto, G. Prete, J. Sauvage, H. Lefort, S. Essabaa, and G. Lhersonneau
Subjects: Nuclear and High Energy Physics, Cesium Isotopes, chemistry, Isotope, Fission, Caesium, Radiochemistry, chemistry.chemical_element, Neutron, Instrumentation, Isotopes of caesium, Rubidium
Abstract: In the framework of the EURISOL project, the production of neutron-rich isotopes of rubidium and cesium has been studied. The intensities of mass-separated beams of rubidium and cesium isotopes generated from a thick 238 UC x target connected to a surface ionizer have been measured. The release properties of 140 Cs and 91 Rb have been investigated. The obtained results allowed us to determine the relative fission yields of rubidium and cesium isotopes with high accuracy.
Published: 2006
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16. Recent developments at the GSI Online Mass Separator

Author: E. Roeckl, K.-H. Schmidt, C. Mazzocchi, Z. Janas, R. Kirchner, J. Döring, H. Grawe, M. Górska, M. La Commara, K. Burkard, W. Hüller, R. Borcea, Schmidt, K, Borcea, R, Burkard, K, Doring, J, Gorska, M, Grawe, H., Huller, W, Janas, Z, Kirchner, R, LA COMMARA, Marco, Mazzocchi, C, and Roeckl, E.
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Valley of stability, Separator (oil production), Experimental methods
Abstract: The research programme at the GSI Online Mass Separator focuses on the study of exotic nuclei far from the valley of stability. Special emphasis is placed on the investigation of decay properties of isotopes along the N = Z line between the double shell closures at 56 Ni and 100 Sn. In this contribution, the major recent achievements along with the corresponding experimental methods are reviewed.
Published: 2002
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17. Probing nuclear forces beyond the drip-line using the mirror nuclei N16 and F16

Author: M. Lenhardt, Thomas Davinson, Vincent Tatischeff, I. Stefan, S. Grévy, F. de Grancey, J. C. Thomas, Marek Ploszajczak, J. Mrazek, M. Stanoiu, R. Borcea, C. Stodel, J. C. Angelique, M. G. Pellegriti, M. G. Saint Laurent, I. Ray, O. Roig, M. Lewitowicz, F. de Oliveira Santos, J. M. Daugas, M. Fadil, G. Dumitru, M. Angélique, Jürgen Kiener, A. Lefebvre-Schuhl, C. Borcea, A. Buta, D. Pantelica, F. Negoita, L. Perrot, E. Berthoumieux, and O. Sorlin
Subjects: Elastic scattering, Physics, Nuclear and High Energy Physics, Nuclear Theory, Nuclear force, Neutron, Symmetry breaking, Mirror nuclei, Atomic physics, Nuclear Experiment
Abstract: Radioactive beams of $^{14}\mathrm{O}$ and $^{15}\mathrm{O}$ were used to populate the resonant states ${1/2}^{+}$, ${5/2}^{+}$ and ${0}^{\ensuremath{-}},{1}^{\ensuremath{-}},{2}^{\ensuremath{-}}$ in the unbound $^{15}\mathrm{F}$ and $^{16}\mathrm{F}$ nuclei, respectively, by means of proton elastic scattering reactions in inverse kinematics. Based on their large proton spectroscopic factor values, the resonant states in $^{16}\mathrm{F}$ can be viewed as a core of $^{14}\mathrm{O}$ plus a proton in the $2{s}_{1/2}$ or $1{d}_{5/2}$ shell and a neutron in $1{p}_{1/2}$. Experimental energies were used to derive the strength of the $2{s}_{1/2}$-$1{p}_{1/2}$ and $1{d}_{5/2}$-$1{p}_{1/2}$ proton-neutron interactions. It is found that the former changes by 40% compared with the mirror nucleus $^{16}\mathrm{N}$, and the latter changes by 10%. This apparent symmetry breaking of the nuclear force between mirror nuclei finds explanation in the role of the large coupling to the continuum for the states built on an $\ensuremath{\ell}=0$ proton configuration.
Published: 2014
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18. Production of very neutron-deficient isotopes near Sn via reactions involving light-particle and cluster emission

Author: P. Jarillo-Herrero, N. Belcari, J. Gomez del Campo, G. de Angelis, Claes Fahlander, Margareta Hellström, H. Grawe, M. Górska, Mario R. Romano, Filippo Terrasi, A. Gadea, K.-H. Schmidt, M. Rejmund, M. La Commara, M. Glogowski, Vincenzo Roca, Antonio D'Onofrio, R. Kirchner, E. Roeckl, K. P. Rykaczewski, and R. Borcea
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Isotope, Isotopes of cadmium, Isotopes of tin, Analytical chemistry, Nuclear fusion, Neutron, Alpha particle, Atomic physics, Nuclear Experiment, Charged particle
Abstract: The production of very neutron-deficient isotopes near 100Sn has been investigated by using on-line mass separation of evaporation residues produced by heavy-ion induced complete-fusion reactions. We measured the cross sections for 99Cd, 100In, 101Sn and 102In via 58Ni+58Ni fusion reactions followed by cluster emission, and via 58Ni+50Cr fusion reactions accompanied by evaporation of protons, neutrons or α particles. Both types of reactions yield similar cross sections for the production of exotic nuclei near 100Sn. The data are discussed in comparison with results obtained from statistical-model calculations.
Published: 2000
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19. The GT resonance revealed in β+-decay using new experimental techniques

Author: P. Kleinheinz, Jürgen Gerl, M. Shibata, M. Górska, D. Cano-Ott, J. Szerypo, H. Grawe, E. Roeckl, M. Rejmund, M. Karny, O. Guilbaud, J. Blomqvist, J. Agramunt, R. Kirchner, W. Liu, Z. Janas, Z. Hu, K. Rykaczewski, R. Borcea, T. Martinez, Berta Rubio, A. Gadea, M. Gierlik, A. Płochocki, Margareta Hellström, F. Moroz, J. L. Tain, R. Collatz, V. Wittmann, Alejandro Algora, and L. Batist
Subjects: Physics, Nuclear and High Energy Physics, Nuclear magnetic resonance, Spectrometer, Physics::Instrumentation and Detectors, Detector, Cluster (physics), Resonance, High Energy Physics::Experiment, Nuclear Experiment, Absorption (electromagnetic radiation), Beta decay
Abstract: The GT beta decay of 150 Ho has been studied with a Total Absorption Spectrometer (TAS), with an array of 6 Euroball CLUSTER Ge detectors (the CLUSTER CUBE), and with an alpha detector. The three techniques complement each other. The results provide the first observation of an extremely sharp resonance in GT beta decay.
Published: 1999
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20. Lifetimes of proton unstable states in 113I measured by the particle-X-ray coincidence technique

Author: E. Roeckl, F. V. Moroz, R. Borcea, C. Mazzocchi, A. Płochocki, Z. Janas, R. Kirchner, J. Żylicz, M. Karny, S. K. Mandal, J. Döring, M. Gierlik, M. La Commara, S. Orlov, L. Batist, Z., Jana, L., Batist, R., Borcea, J., Döring, M., Gierlik, M., Karny, R., Kirchner, LA COMMARA, Marco, S., Mandal, C., Mazzocchi, F., Moroz, S., Orlov, A., Płochocki, E., Roeckl, and J., Żylicz
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Proton decay, Branching fraction, Electron capture, Hadron, Nuclear fusion, Atomic physics, Proton emission, Nuclear Experiment, Beta decay
Abstract: The β-delayed proton decay of 113Xe was investigated by means of a total absorption γ-ray spectrometer and a telescope for particle detection. The energy window available for the β-delayed proton decay of 113Xe and the relative branching ratios for proton transitions to the 112Te states were remeasured. The lifetimes of proton unstable 113I states populated in the electron capture decay of 113Xe were determined by means of the particle-X-ray coincidence technique. The results of the lifetime measurements are compared with statistical-model calculations.
Published: 2005

21. Isomerism in 96Ag and non-yrast levels in 96Pd and 95Rh, studied in β decay

Author: K. Schmidt, B. Salvachúa, E. Roeckl, R. Borcea, C. Mazzocchi, Z. Janas, M. La Commara, L. D. Skouras, R. Kirchner, F. V. Moroz, A. Płochocki, I.P. Johnstone, L. Batist, K. Hauschild, C. Plettner, J. Pavan, M. Karny, Ronald Schwengner, C. R. Bingham, S. L. Tabor, M. Kavatsyuk, M. Gierlik, Ivan Mukha, J. Döring, M. Wiedeking, H. Grawe, L., Batist, J., Döring, I., Mukha, C., Plettner, C. R., Bingham, R., Borcea, M., Gierlik, H., Grawe, K., Hauschild, Z., Jana, I. P., Johnstone, M., Karny, M., Kavatsyuk, R., Kirchner, LA COMMARA, Marco, C., Mazzocchi, F., Moroz, J., Pavan, A., Płochocki, E., Roeckl, B., Salvachúa, K., Schmidt, R., Schwengner, L. D., Skoura, S. L., Tabor, and M., Wiedeking
Subjects: Physics, Nuclear and High Energy Physics, Positron, Proton, Excited state, Yrast, Nuclear structure, Atomic physics, Ground state, Beta decay, Excitation
Abstract: The β decay of 96Ag (Z=47,N=49) was investigated by measuring positrons, X rays as well as β-delayed protons and γ rays. The γ radiation was studied by means of germanium detectors and a NaI total-absorption spectrometer. Two β-decaying isomers in 96Ag were established with half-lives of 4.40(6) and 6.9(6) s and tentative spin–parity assignments of (8+) and (2+), respectively. For both isomers, the intensities of β transitions to low-lying levels of 96Pd (Z=46,N=50) and β-delayed proton decays to levels in 95Rh (Z=45,N=50) were measured. Several new 96Pd levels were firmly established. The level energies, their γ decays and the Gamow–Teller decay of 96Ag are compared to shell-model predictions. A new low-lying level in 95Rh was found at 680 keV excitation energy. Through a comparison with low-lying states of N=50 isotones, this level is interpreted as the first excited 7/2+ state built on the proton 9/2+ ground state. The assignments of further excited states in 95Rh are discussed.
Published: 2003

22. Improved values for the characteristics of prompt-fissionγ-ray spectra from the reaction235U(nth,f)

Author: T. Brys, R. Borcea, A. Goeoek, Stephan Oberstedt, L. Szentmiklosi, Marzio Vidali, K. Takacs, Tamás Belgya, R. Billnert, T. Martinez, W. Geerts, Zoltán Kis, Andreas Oberstedt, and F.-J. Hambsch
Subjects: Physics, Nuclear and High Energy Physics, Scintillation, Photon, Fission, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Neutron temperature, Spectral line, Nuclear physics, Atomic physics, Nuclear Experiment, Spontaneous fission, Bar (unit)
Abstract: In this paper we present results from measurements of prompt gamma rays from the thermal neutron induced fission of U-235. Photons were measured in coincidence with fission fragments with cerium-doped LaCl3 and LaBr3 as well as CeBr3 scintillation detectors, which offer an intriguing combination of excellent timing resolution and good resolving power. The spectra measured with all employed detectors are in excellent agreement with respect to their shapes. Characteristic parameters were extracted for a gamma-energy range from 0.1 to 6.0 MeV and the results obtained with several detectors were averaged. From that, the average emission yield of prompt-fission gamma rays was determined to be (nu) over bar (gamma) = (8.19 +/- 0.11) per fission, the average energy per photon to be epsilon(gamma) = (0.85 +/- 0.02) MeV, and the total energy to be E-gamma,E-tot = (6.92 +/- 0.09) MeV. The uncertainties are much lower than the 7.5% requested for the modeling of advanced nuclear reactor cores. Estimating the influence of gamma rays with energies between 6 and 10 MeV on the values determined in this work revealed a negligible deviation of the order of the found uncertainties.
Published: 2013
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23. Beta decay of medium and high spin isomers in 94Ag

Author: Alexander Ostrowski, M. La Commara, C. Plettner, M. Górska, Margareta Hellström, J. Döring, R. Kirchner, Z. Janas, S. Galanopoulos, K.-H. Schmidt, R. Borcea, G. Rainovski, H. Grawe, E. Roeckl, C. Mazzocchi, Sotirios Harissopulos, LA COMMARA, Marco, K., Schmidt, H., Grawe, J., Döring, R., Borcea, S., Galanopoulo, M., Górska, S., Harissopulo, M., Hellström, Z., Jana, R., Kirchner, C., Mazzocchi, A. N., Ostrowski, C., Plettner, G., Rainovski, and E., Roeckl
Subjects: Physics, Nuclear and High Energy Physics, education.field_of_study, Isotope, Population, Beta decay, Crystallography, medicine.anatomical_structure, Excited state, medicine, Atomic physics, Spin (physics), education, Nucleus
Abstract: The very neutron-deficient isotope 94 Ag was produced at the GSI on-line mass separator by using the reaction 58 Ni( 40 Ca, p3n). The β -decay properties of 94 Ag were studied by detecting for the first time β -delayed γ rays and β – γ – γ coincidences. Both the population of excited levels in the daughter nucleus 94 Pd and the β -decay half-life of 94 Ag were investigated. The major part of the feeding was assigned to the decay of an I π =(7 + ) isomer with a half-life of (0.36±0.03) s. A weak β -decay branch was found to populate high-spin levels in the 94 Pd daughter with I ⩾18. It is tentatively assigned to the decay of a high-spin parent state in 94 Ag with I ⩾17 and a half-life (0.3±0.2) s. The measured β -decay properties as well as the level structure of 94 Ag and 94 Pd are discussed in comparison with shell-model predictions.
Published: 2002

24. Cross sections for one-neutron knock-out from $^{37}$Ca at intermediate energy

Author: G. Benzoni, Zsolt Dombrádi, C. N. Timis, W. Korten, A. Navin, F. Azaiez, D. Verney, S. J. Williams, F. Rotaru, A. Al-Khatib, H. Hübel, M. G. Saint-Laurent, P. Bringel, A. Bürger, Ch. Bourgeois, G. Sletten, P. Roussel Chomaz, O. Sorlin, C Theisen, I. Stefan, R. Borcea, F. Ibrahim, B. Bastin, Zsolt Fülöp, S. Franchoo, J. C. Dalouzy, Alejandro Algora, M. Stanoiu, C. Engelhardt, J. Mrazek, Z. Dlouhý, Dóra Sohler, Andreas Görgen, E. Clément, A. Drouart, S. Grévy, 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 de Physique Nucléaire d'Orsay (IPNO), 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)
Subjects: Physics, Nuclear and High Energy Physics, Valence (chemistry), 010308 nuclear & particles physics, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Momentum, Cross section (physics), Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, 25.60.Gc, 23.20.Lv, 27.30.+t, Energy (signal processing), Excitation
Abstract: The cross section for the knock-out of a deeply bound valence neutron from ${}^{37}$Ca at an incident beam energy of $60A\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$ has been measured along with momentum distributions of the residual nuclei and $\ensuremath{\gamma}$ rays from the de-excitation of the first excited state in ${}^{36}$Ca. As for other cases of deeply bound nucleons studied using knock-out reactions, the reduction of the measured cross section compared to theoretical predictions is stronger than those observed for near-magic stable nuclei. Both the momentum distributions and the excitation energy of the first excited state in ${}^{36}$Ca indicate a sizable $N=16$ gap.
Published: 2012
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25. Publisher's Note: In-beam spectroscopic studies of the 44S nucleus [Phys. Rev. C 85, 024311 (2012)]

Author: J. C. Angélique, Z. Elekes, O. Sorlin, I. Stefan, S. Iacob, L. Gaudefroy, A. Drouard, F. Nowacki, Zs. Dombrádi, B. Bastin, L. Caceres, P. Roussel-Chomaz, B. Laurent, Robert Chapman, J. C. Dalouzy, F. Azaiez, Ch. Bourgeois, Dóra Sohler, F. Negoita, D. Baiborodin, N. L. Achouri, M. Stanoiu, E. Liénard, M. G. Saint-Laurent, X. Liang, N. A. Orr, Zs. Podolyák, A. Poves, L. Nalpas, A. Buta, S. Franchoo, M. Lazar, S. Grévy, Y. E. Penionzhkevich, Z. Dlouhy, F. Pougheon, J. Mrazek, A. Bürger, R. Borcea, 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 corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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 Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-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), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, SHELL model, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, medicine.anatomical_structure, 21.60.Cs, 23.20.Lv, 27.40.+z, 99.10.Fg, 0103 physical sciences, medicine, 010306 general physics, Nucleus, Beam (structure)
Abstract: This paper was published online on 15 February 2012 with errors in Figs. 2 and 4. The figures has been replaced as of 28 February 2012. The figures are correct in the printed version of the journal.
Published: 2012
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26. In-beam spectroscopic studies of $^{44}$S nucleus

Author: Dóra Sohler, Z. Elekes, L. Nalpas, Z. Dlouhy, P. Roussel-Chomaz, M. Stanoiu, Frédéric Nowacki, N. L. Achouri, X. Liang, N. A. Orr, A. Bürger, Zs. Podolyák, F. Pougheon, J. C. Angélique, Alfredo Poves, F. Negoita, R. Borcea, A. Drouard, S. Grévy, M. G. Saint-Laurent, E. Liénard, L. Caceres, F. Azaiez, O. Sorlin, I. Stefan, J. Mrazek, S. Iacob, Zs. Dombrádi, Ch. Bourgeois, A. Buta, S. Franchoo, B. Bastin, D. Baiborodin, L. Gaudefroy, R. Chapman, Yu. E. Penionzhkevich, J. C. Dalouzy, B. Laurent, M. Lazar, 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), UAM. Departamento de Física Teórica, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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: Physics, Nuclear and High Energy Physics, 21.60.Cs, 23.20.Lv, 27.40.+z, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, SHELL model, Foundation (engineering), FOS: Physical sciences, Física, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Beam (structure)
Abstract: The structure of the $^{44}$S nucleus has been studied at GANIL through the one proton knock-out reaction from a $^{45}$Cl secondary beam at 42 A$\cdot$MeV. The $\gamma$ rays following the de-excitation of $^{44}$S were detected in flight using the 70 BaF${_2}$ detectors of the Ch\^{a}teau de Cristal array. An exhaustive $\gamma\gamma$-coincidence analysis allowed an unambiguous construction of the level scheme up to an excitation energy of 3301 keV. The existence of the spherical 2$^+_2$ state is confirmed and three new $\gamma$-ray transitions connecting the prolate deformed 2$^+_1$ level were observed. Comparison of the experimental results to shell model calculations further supports a prolate and spherical shape coexistence with a large mixing of states built on the ground state band in $^{44}$S., Comment: 6 pages, 5 figures, accepted for publication in Physical Review C
Published: 2012
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27. Spectroscopy of $^{18}$Na: Bridging the two-proton radioactivity of $^{19}$Mg

Author: F. de Oliveira Santos, A. Lefebvre-Schuhl, T. Al Kalanee, C. Borcea, L. Perrot, R. Wolski, K. Subotic, J. C. Angélique, A. M. Sánchez-Benítez, F. Rotaru, Y. H. Lam, T. Davinson, R. Borcea, Predrag Ujić, V. Chudoba, Muriel Fallot, M. Stanoiu, L. Caceres, J. Mrazek, M. Assié, Igor T. Čeliković, Gavin Lotay, F. de Grancey, L. Achouri, C. Ducoin, O. Kamalou, Yu. Sobolev, P. J. Woods, Jürgen Kiener, J. Alcantara-Nunez, M. G. Saint-Laurent, NA Smirnova, D.Y. Pang, I. Stefan, 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), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), CSNSM AS, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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)-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), Physique théorique (THEORIE), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-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), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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)-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), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Excitation function, Elastic scattering, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Scattering, Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Isotopes of sodium, 01 natural sciences, 23.50.+z, 24.30.-v, 25.60.Bx, 21.10.Tg, 0103 physical sciences, Nuclear Experiment (nucl-ex), Atomic physics, 010306 general physics, Spectroscopy, Nucleon, Nuclear Experiment, Isotopes of magnesium
Abstract: Expérience GANIL E521aS/SPIRAL; International audience; The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of the low-lying states were obtained in a R-matrix analysis of the excitation function. Using these new results, we show that the lifetime of the $^{19}$Mg radioactivity can be understood assuming a sequential emission of two protons via low energy tails of $^{18}$Na resonances.
Published: 2012
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28. Isomer separation of Cu and Cu with a resonance ionization laser ion source

Author: U Köster, V.N Fedoseyev, V.I Mishin, L Weissman, M Huyse, K Kruglov, W.F Mueller, P Van Duppen, J Van Roosbroeck, P Thirolf, H.G Thomas, D Weisshaar, W Schulze, R Borcea, M La Commara, H Schatz, K Schmidt, S Röttger, G Huber, V Sebastian, K.L Kratz, R Catherall, U Georg, J Lettry, M Oinonen, H.L Ravn, H Simon, null ISOLDE collaboration, U., Köster, V. N., Fedoseyev, V. I., Mishin, L., Weissman, M., Huyse, K., Kruglov, W. F., Mueller, P., Van Duppen, J., Van Roosbroeck, P., Thirolf, H. G., Thoma, D., Weisshaar, W., Schulze, R., Borcea, LA COMMARA, Marco, H., Schatz, K., Schmidt, S., Röttger, G., Huber, V., Sebastian, K. L., Kratz, R., Catherall, U., Georg, J., Lettry, M., Oinonen, H. L., Ravn, H., Simon, and Isolde, Collaboration
Subjects: Nuclear and High Energy Physics, Dye laser, Isotopes of copper, Chemistry, Analytical chemistry, Physics::Optics, Laser, Ion source, law.invention, law, Ionization, Physics::Atomic Physics, Atomic physics, Ground state, Atomic vapor laser isotope separation, Instrumentation, Hyperfine structure
Abstract: Radioactive copper isotopes were ionized with the resonance ionization laser ion source (RILIS) at the on-line isotope separator ISOLDE (CERN). Using the different hyperfine structure in the 3d10 4s 2 S1/2 – 3d10 4p 2 P01/2 transition the low- and high-spin isomers of 70 Cu were selectively enhanced by tuning the laser wavelength. The light was provided by a narrow-bandwidth dye laser pumped by copper vapor lasers (CVL) and frequency doubled in a BBO crystal. The ground state to isomeric state intensity ratio could be varied by a factor of 30, allowing to assign gamma transitions unambiguously to the decay of the individual isomers. It is shown that the method can also be used to determine magnetic moments. In a first experiment for the 1+ ground state of 70 Cu a magnetic moment of (+)1.8(3) μN and for the high-spin isomer of 70 Cu a magnetic moment of (±)1.2(3) μN could be deduced.
Published: 2000

29. Beta decay of 93Pd

Author: J. Döring, M. La Commara, Margareta Hellström, M. Górska, G. Kriembardis, K. Schmidt, H. Grawe, R. Kirchner, Z. Janas, R. Borcea, G. Rainovski, S. Galanopoulos, E. Roeckl, A. N. Ostrowski, C. Mazzocchi, Sotirios Harissopulos, K., Schmidt, C., Mazzocchi, R., Borcea, J., Döring, S., Galanopoulo, M., Górska, H., Grawe, S., Harissopulo, M., Hellström, Z., Jana, R., Kirchner, G., Kriembardi, LA COMMARA, Marco, A. N., Ostrowski, G., Rainovski, and E., Roeckl
Subjects: Physics, Nuclear and High Energy Physics, Isotope, Hadron, Beta decay, Ion, medicine.anatomical_structure, Excited state, medicine, Nuclear fusion, Atomic physics, Nucleus, Beam (structure), Nuclear Physics
Abstract: The very neutron-deficient isotope 93Pd was produced in fusion-evaporation reactions of a 40Ca beam on a 58Ni target. The reaction products were separated at the GSI Online Mass Separator, using ion sources of the FEBIAD type. The β-decay properties of 93Pd were studied by detecting β-delayed protons and β-delayed γ-rays. The feeding of excited levels in the daughter nucleus 93Rh and the β-decay half-life of 93Pd were determined. The experimental results are discussed in comparison to shell model predictions.
Published: 2000

30. β-decay measurements forN>40Mn nuclei and inference of collectivity for neutron-rich Fe isotopes

Author: C. R. Bingham, F. Becker, F. de Oliveira Santos, Georgi P. Georgiev, I. Matea, O. Roig, Ch. Stodel, H. Grawe, Robert Grzywacz, M. Lewitowicz, M. Sawicka, J. Giovinazzo, G. Belier, E. Bouchez, E. Dragulescu, D. Verney, F. Ibrahim, J. Libert, M. Pfützner, M. Stanoiu, K. P. Rykaczewski, P. Mayet, J. P. Delaroche, O. Perru, F. Hammache, V. Méot, A. Buta, J. E. Sauvestre, Ch. Theisen, J. Żylicz, Michel Girod, R. Borcea, O. Sorlin, I. Stefan, F. Negoita, M. G. Saint-Laurent, and J. M. Daugas
Subjects: Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Neutron emission, Branching fraction, 7. Clean energy, 01 natural sciences, Nuclear physics, Neutron number, Isotopes of vanadium, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Delayed neutron, Radioactive decay
Abstract: A decay spectroscopic study of the neutron-rich isotopes has been performed using fragmentation of a 86Kr primary beam. Fragments from this reaction have been selected by the LISE2000 spectrometer at the Grand Acc el erateur National d Ions Lourds (GANIL). Half-lives of 29 isotopes, including the first ones identified for 61Ti (15 4 ms), 64V (19 8 ms), and 71Fe (28 5 ms), have been determined and compared with model predictions. 67,68Mn -delayed rays were observed for the first time. The branching for the -delayed neutron emission was measured to be greater than 10(5)% in the 67Mn decay. The 67Fe isomeric level is firmly determined at higher energy than assigned in previous works. The excitation energies of the first (2+) and (4+) states of 68Fe are suggested to lie at 522(1) and 1389(1) keV, respectively, thus bringing confirmation of assignments based on in-beam -ray spectroscopy. Beyond-mean-field calculations with the Gogny D1S force have been performed for even-mass nuclei through the Fe isotopic chain. Not only 68Fe but most of the neutron-rich Fe isotopes with neutron numbers below N = 50 are interpreted as soft rotors. The calculated mean occupancy of the neutron g9/2 and d5/2 orbitals in correlated ground statesmore » is steadily growing with increasing neutron number throughout the isotopic chain. Interpretation of 67Fe data is based upon the present calculations for the 66Fe and 68Fe even cores.« less
Published: 2011
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31. Spectroscopy of 39,41Si and the border of the N = 28 island of inversion

Author: S. M. Lukyanov, Ch. Bourgeois, O. Sorlin, X. Liang, I. Stefan, Z. Elekes, J. Mrazek, Zs. Dombrádi, A. Drouard, M. G. St-Laurent, M. Lazar, J. C. Dalouzy, Zs. Podolyák, F. Pougheon, F. Nowacki, Alfredo Poves, N. A. Orr, D. Baiborodin, P. Roussel-Chomaz, S. Grévy, Z. Dlouhy, S. Iacob, István Kuti, L. Caceres, A. Buta, F. Negoita, J. C. Angélique, B. Bastin, S. Franchoo, D. Sohler, L. Gaudefroy, A. Bürger, R. Borcea, L. Nalpas, Yu.E. Penionzkhevitch, F. Azaiez, R. Chapman, N. L. Achouri, E. Liénard, B. Laurent, M. Stanoiu, Noyaux exotiques (NEX), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-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), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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 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), 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), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-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), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Nuclear Theory, Fizikai tudományok, Shell closures, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Knockout reactions, 7. Clean energy, 01 natural sciences, Természettudományok, 0103 physical sciences, Neutron, Isotopes of silicon, Nuclear structure, 010306 general physics, Spectroscopy, Nuclear Experiment, Neutron-rich Si nuclei, Physics, 010308 nuclear & particles physics, Island of inversion, Excited state, Atomic physics, Ground state
Abstract: Expérience GANIL/SISSI/SPEG; International audience; The structure of the very neutron-rich nuclei 39Si and 41Si has been investigated via in-beam γ -ray spectroscopy and few-nucleon knockout from radioactive beams. The observation of low-lying states in 39Si is a clear evidence for a drastic lowering of the intruder neutron 3/2− state when going from Z = 20 to Z = 14. The energy of the only γ -ray transition (672(14) keV) observed in 41Si is significantly lower than that of the first excited state in 47Ca (2014 keV) suggesting a deformed ground state for 41Si. These results are consistent with large-scale shell-model calculations implying that strong proton- neutron correlations are the main reason for the lowering of the intruder configurations over the normal ones.
Published: 2011
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32. Production of neutron-rich fragments with neutron number N > Nprojectile in the reaction $^{48}$Ca (60 MeV/nucleon) + Ta

Author: M. Assié, R. Borcea, G. Adamyan, A. Buta, F. de Oliveira Santos, J. C. Thomas, B. M. Tsang, C. Borcea, Georgi P. Georgiev, L. Perrot, S. M. Lukyanov, M. Mocko, R. V. Revenko, O. Kamalou, V. A. Maslov, M. Lewitowicz, Yu. E. Penionzhkevich, F. Rotaru, C. Stodel, M. Stanoiu, M. G. Saint-Laurent, Predrag Ujić, S. Grévy, R. A. Astabatyan, M.N. Harakeh, L. Caceres, Flerov Laboratory of Nuclear Reactions [Dubna] (FLNR), Joint Institute for Nuclear Research (JINR), 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), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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), Kernfysisch Versneller Instituut (KVI), University of Groningen [Groningen], Los Alamos National Laboratory (LANL), National Superconducting Cyclotron Laboratory, Michigan State University [East Lansing], Michigan State University System-Michigan State University System, Institut de Physique Nucléaire d'Orsay (IPNO), 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 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)
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, Reaction mechanism, Isotope, 010308 nuclear & particles physics, Projectile, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Neutron number, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, Excitation
Abstract: Expérience GANIL, Spectrometre LISE; International audience; The goal of the present paper is to attempt to clarify the nuclear reaction mechanism leading to the production of fragments at zero degree with neutron number larger than that in the 48Ca projectile, at about 60 MeV per nucleon. The production cross sections of the extremely neutron-rich Si and P isotopes were measured. Concerning the nuclear reaction mechanism leading to the production of these isotopes, one should probably refer to a particular type of transfer mechanism, which results in low excitation energy for the fragments, rather than to the ‘genuine' fragmentation mechanism. An upper limit of about 0.05 pb was estimated for the production cross section for the 47P isotope for which no count was observed.
Published: 2010
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33. Study of collisions of the radioactive $^{24}$Ne beam at 7.9 MeV/u on $^{208} $Pb

Author: G. Benzoni, F. Azaiez, G. I. Stefan, S. Franchoo, S. Battacharyya, R. Borcea, A. Bracco, L. Corradi, D. Curien, G. De France, Zs. Dombradi, E. Fioretto, S. Grevy, F. Ibrahim, S. Leoni, D. Montanari, G. Mukherjee, G. Pollarolo, N. Redon, P. H. Regan, C. Schmitt, G. Sletten, D. Sohler, M. Stanoiu, S. Szilner, D. Verney, Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-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), 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), SPIRAL, 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), 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), Université Claude Bernard Lyon 1 (UCBL), and 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)
Subjects: Physics, Radioactive ion beams, Nuclear and High Energy Physics, Ion beam, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, Nuclear physics, Angular distribution, 0103 physical sciences, Physics::Accelerator Physics, Nuclear fusion, grazing collsions, 24Ne beam, VAMOS, GRAZING model, Atomic physics, Nuclear Experiment, 010306 general physics, Spiral, Beam (structure)
Abstract: Expérience GANIL, VAMOS-EXOGAM; Cross-sections of the main reaction channels for the collision 24Ne + 208Pb at 7.9MeV/u were studied using the radioactive ion beam delivered by the SPIRAL facility and the VAMOS-EXOGAM experimental set-up. Angular distributions for the elastic and inelastic channels were extracted, together with distributions for the +1n and −1p channels. A comprehensive description of the present data is made within the GRAZING model approach.
Published: 2010
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34. β decay ofAg95

Author: Z. Janas, I.P. Johnstone, Sotirios Harissopulos, R. Kirchner, M. La Commara, Ronald Schwengner, R. Borcea, L. D. Skouras, Margareta Hellström, E. Roeckl, C. Mazzocchi, K.-H. Schmidt, H. Grawe, M. Górska, J. Döring, and S. Galanopoulos
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics
Published: 2005
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35. Hindered E4 decay of the 12+ yrast trap in 52Fe

Author: C. A. Ur, Claes Fahlander, F. Nowacki, D. Cano-Ott, Magnus Hellström, F. Brandolini, Z. Janas, E. Roeckl, R. Kirchner, H. Grawe, M. La Commara, C. Plettner, E. Caurier, Gabriel Martínez-Pinedo, C. Mazzocchi, M. Górska, J. Döring, A. Gadea, Berta Rubio, Ronald Schwengner, K.-H. Schmidt, Enrique Nácher, J. Żylicz, M. Axiotis, D. R. Napoli, J. L. Tain, G. de Angelis, L. Batist, S. M. Lenzi, E. Farnea, R. Borcea, and A. Płochocki
Subjects: Physics, Nuclear and High Energy Physics, Yrast, Nuclear Theory, SHELL model, Shell model calculations, Nuclear structure, Shell (structure), Gamma ray, Yrast trap, Residual, Trap (computing), Atomic physics, Wave function
Abstract: The gamma decay of the 12(+) yrast trap in Fe-52 has been measured for the first time. The two E4 gamma-branches to the 8(+) states are hindered with respect to other B(E4) reduced transition probabilities measured in the f(7/2) shell. The interpretation of the data is given in the full pf shell model framework, comparing the results obtained with different residual interactions. It is shown that measurements of hexadecapole transition probabilities constitute a powerful tool in discriminating the correct configuration of the involved wavefunctions.
Published: 2005

36. Evidence for a high-spinβ-decaying isomer inLu177

Author: W. D. Schmidt-Ott, E. Roeckl, C. Mazzocchi, Ivan Mukha, C. J. Pearson, H. Grawe, S. Al-Garni, R. Kirchner, P. M. Walker, S. C. Wooding, R. Wood, Y. Shimbara, C. Wheldon, P. H. Regan, H. El-Masri, J. Döring, C. Plettner, M. La Commara, Furong Xu, L. Batist, A. Blazhev, K.-H. Schmidt, D. M. Cullen, R. Borcea, and J. Garcés Narro
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Ground state, 01 natural sciences, Energy (signal processing), Spin-½
Abstract: Nuclei in the $A\ensuremath{\sim}180$ region have been populated and investigated in a series of multinucleon transfer and deep-inelastic reactions involving an $11.4\phantom{\rule{0.3em}{0ex}}\text{MeV}$ per nucleon $^{136}\mathrm{Xe}$ beam produced by the GSI UNILAC accelerator, impinging on a selection of tantalum and tungsten targets. The reaction products were released from a thermal ion source and subsequently mass selected using the GSI on-line mass separator. The unexpectedly high yield of $\ensuremath{\gamma}$ rays associated with the decay of the well established ${K}^{\ensuremath{\pi}}=37∕{2}^{\ensuremath{-}}$,${t}_{1∕2}=51.4\phantom{\rule{0.3em}{0ex}}\mathrm{min}$ isomer in $_{\phantom{\rule{0.3em}{0ex}}72}^{177}\mathrm{Hf}$ and anomalous half-life characteristics associated with this decay lead to these data being interpreted as the ${\ensuremath{\beta}}^{\ensuremath{-}}$ decay of a high-$K$ isomer in the mother nucleus, $^{177}\mathrm{Lu}$. By comparing the experimental findings with the predictions obtained from multi-quasiparticle blocked-BCS-Nilsson calculations, the proposed decay is suggested to be from a ${K}^{\ensuremath{\pi}}=39∕{2}^{\ensuremath{-}}$ five-quasiparticle state in $_{\phantom{\rule{0.3em}{0ex}}71}^{177}\mathrm{Lu}$. A half-life of $7\ifmmode\pm\else\textpm\fi{}2\phantom{\rule{0.3em}{0ex}}\mathrm{min}$ is determined for this $\ensuremath{\beta}$-decay path which is estimated to have an excitation energy of $\ensuremath{\approx}3.9\phantom{\rule{0.3em}{0ex}}\text{MeV}$ above the $^{177}\mathrm{Lu}$ ground state.
Published: 2004
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37. Identification of isomers in theN=Z+1nucleus95Ag

Author: M. La Commara, Z. Janas, S. Galanopoulos, M. Górska, K.-H. Schmidt, Margareta Hellström, H. Grawe, Ronald Schwengner, Sotirios Harissopulos, E. Roeckl, R. Kirchner, C. Mazzocchi, J. Döring, and R. Borcea
Subjects: Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, SHELL model, medicine.anatomical_structure, medicine, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Spin (physics), Nucleus, Energy (signal processing), Excitation
Abstract: Three $\ensuremath{\gamma}$-decaying isomers in the $N=Z+1$ nucleus ${}^{95}\mathrm{Ag}$ have been identified for the first time. The ${}^{95}\mathrm{Ag}$ nuclei were produced via the ${}^{58}\mathrm{Ni}{(}^{40}\mathrm{Ca},p2n)$ reaction and separated by using the GSI on-line mass separator. The emitted $\ensuremath{\gamma}$ rays were measured with a multi-Ge detector setup in anticoincidence with positrons. Three individual $\ensuremath{\gamma}$-decay cascades have been identified and assigned to ${}^{95}\mathrm{Ag},$ representing the depopulation of isomers at 344-, 2531-, and 4859-keV excitation energy with tentative spin-parity assignments of ${(1/2}^{\ensuremath{-}}),{(23/2}^{+}),$ and ${(37/2}^{+}),$ respectively. The spin and parity assignments are based on a comparison with shell-model predictions employing empirical interactions.
Published: 2003
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38. β decay of100In

Author: C. Plettner, Z. Janas, R. Borcea, Ronald Schwengner, R. Kirchner, K. Schmidt, V. Belleguic, M. Gierlik, M. Karny, A. Blazhev, P. Munro, C. R. Bingham, E. Roeckl, C. Mazzocchi, L. Batist, H. Grawe, M. Górska, N. P. Harrington, and J. Döring
Subjects: Physics, Nuclear and High Energy Physics, Decay scheme, Proton, Double beta decay, SHELL model, Neutron, Atomic physics, Proton emission, Nuclear Experiment, Beta decay, Excitation
Abstract: The \ensuremath{\beta} decay of ${}^{100}\mathrm{In},$ the one proton hole and one neutron particle neighbor to ${}^{100}\mathrm{Sn},$ was investigated at the GSI on-line mass separator by using germanium detectors and a NaI total-absorption spectrometer. On the basis of \ensuremath{\beta}\ensuremath{\gamma}\ensuremath{\gamma} coincidences, the ${}^{100}\mathrm{In}$ decay scheme was established for the first time. The ground-state spin and parity for ${}^{100}\mathrm{In}$ are discussed by investigating \ensuremath{\beta} feeding of levels in ${}^{100}\mathrm{Cd}$ and $\ensuremath{\beta}$-delayed proton emission to ${}^{99}\mathrm{Ag}.$ The half-life was remeasured and found to be 5.9(2) s. The ${Q}_{\mathrm{EC}}$ value was determined from the measured $EC/{\ensuremath{\beta}}^{+}$ ratio for the \ensuremath{\beta}-delayed protons to be 10.08(23) MeV. The main fraction of the \ensuremath{\beta} feeding was established to populate the region of 6 MeV excitation energy, which corresponds to a total Gamow-Teller (GT) strength of 3.9(9) and a centroid at 6.4 MeV. Large-scale shell-model calculations employing a realistic interaction are used to assign configurations to states in ${}^{100}\mathrm{In}$ and ${}^{100}\mathrm{Cd}.$ The GT \ensuremath{\beta}-decay strength distribution measured in the total absorption experiment is compared to shell-model predictions. The deduced overall hindrance of the GT strength agrees with the values predicted for the ${}^{100}\mathrm{Sn}$ GT decay.
Published: 2002
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39. Production of neutron-rich surface-ionized nuclides at PARRNe

Author: J. Obert, F. Hosni, C. Donzaud, C. Bourgeois, O. Perru, D. Guillemaud-Mueller, S. Essabaa, R. Borcea, E. Fioretto, M. Ducourtieux, J.C. Potier, G. Prete, G. Lhersonneau, L.B. Tecchio, K. Peräjärvi, H. Lefort, Ulli Köster, B. Pfeiffer, F. Ibrahim, L. Stroe, A. Joinet, Jacques Lettry, O. Bajeat, C. Lau, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)
Subjects: Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Chemistry, Fission, Astrophysics::High Energy Astrophysical Phenomena, Isotopes of samarium, Nuclear Theory, Radiochemistry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Ion source, Neutron temperature, Nuclear physics, 0103 physical sciences, Neutron, Nuclide, Nuclear Experiment, 010306 general physics, Instrumentation, Isotopes of caesium
Abstract: Yields of neutron-rich isotopes produced by fast neutron induced fission of 238 U were measured at the ISOL set-up Production dAtomes Radioactifs Riches en Neutrons. A surface ion source was used to ionize selectively elements with low ionization potentials. In order to observe also the most n-rich isotopes, the identification was achieved by a combined measurement of b- and c-rays and b-delayed neutrons. The flux of fast neutrons inducing fission was generated by a 1 lA beam of 26 MeV deuterons stopped in a graphite converter. The target was a standard ISOLDE type 238 UC
Published: 2002

40. Evidence for an isomer in 76 Ni

Author: O. Roig, V. Méot, Ch. Theisen, M. Lewitowicz, E. Dragulescu, D. Verney, G. Bélier, F. Negoita, M. G. Saint-Laurent, H. Grawe, M. Stanoiu, Georgi P. Georgiev, E. Bouchez, J. M. Daugas, F. Becker, C. Stodel, R. Borcea, F. de Oliveira Santos, C. R. Bingham, O. Sorlin, I. Stefan, J. E. Sauvestre, A. Buta, F. Ibrahim, M. Sawicka, J. Giovinazzo, M. Pfützner, K. P. Rykaczewski, I. Matea, P. Mayet, F. Hammache, Robert Grzywacz, and O. Perru
Subjects: Physics, Nuclear and High Energy Physics, Isotope, Spectrometer, Hadron, SHELL model, chemistry.chemical_element, Nuclear physics, Microsecond, Crystallography, Nickel, chemistry, Nuclear fusion, Spectroscopy
Abstract: In the experiment performed at the LISE2000 spectrometer at GANIL neutron-rich nickel isotopes were studied by microsecond isomer spectroscopy. Evidence for an isomer in 76Ni is found, consistently with the shell model prediction of an 8 + state of $\nu (g_{9/2})^2$ structure.
Published: 2003
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41. Erratum to 'Beta decay of 56Cu'

Author: J. Döring, Heikki Penttilä, M. Sawicka, M. Górska, C. Schlegel, A. Płochocki, Z. Janas, A. Nieminen, M. Rejmund, Margareta Hellström, R. Kirchner, Ari Jokinen, R. Borcea, M. Gierlik, F. Nowacki, P. Mayet, M. La Commara, E. Roeckl, Gabriel Martínez-Pinedo, Karlheinz Langanke, E. Caurier, M. Karny, H. Grawe, Ronald Schwengner, K.-H. Schmidt, Peter Dendooven, and Juha Äystö
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Beta decay
Published: 2002
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42. Beta decay of 57Zn

Author: Heikki Penttilä, M. Sawicka, E. Roeckl, H. Grawe, A. Jokinen, M. Karny, M. Rejmund, Z. Janas, Ronald Schwengner, C. Schlegel, Juha Äystö, R. Kirchner, K.-H. Schmidt, P. Mayet, R. Borcea, Peter Dendooven, M. Górska, A. Płochocki, Margareta Hellström, M. Gierlik, M. La Commara, Gabriel Martínez-Pinedo, E. Caurier, and A. Nieminen
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Decay scheme, Nuclear fusion, Atomic physics, Beta decay
Published: 2006
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