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11 results on '"Valiente-Dobon J.J."'

1. Testing $ab initio$ nuclear structure in neutron-rich nuclei: lifetime measurements of second 2$^+$ states in $^{16}$C and $^{20}$O

Author

Ciemala, M., Ziliani, S., Crespi, F.C.L., Leoni, S., Fornal, B., Maj, A., Bednarczyk, P., Benzoni, G., Bracco, A., Boiano, C., Bottoni, S., Brambilla, S., Bast, M., Beckers, M., Braunroth, T., Camera, F., Cieplicka-Orynczak, N., Clément, E., Coelli, S., Dorvaux, O., Erturk, S., de France, G., Fransen, C., Goldkuhle, A., Grebosz, J., Harakeh, M.N., Iskra, L.W., Jacquot, B., Karpov, A., Kicinska-Habior, M., Kim, Y., Kmiecik, M., Lemasson, A., Lenzi, S.M., Lewitowicz, M., Li, H., Matea, I., Mazurek, K., Michelagnoli, C., Matejska-Minda, M., Million, B., Muller-Gatermann, C., Nanal, V., Napiorkowski, P., Napoli, D.R., Palit, R., Rejmund, M., Schmitt, Ch., Stanoiu, M., Stefan, I., Vardaci, E., Wasilewska, B., Wieland, O., Zieblinski, M., Zielinska, M., Atac, A., Barrientos, D., Birkenbach, B., Boston, A.J., Cederwall, B., Charles, L., Collado, J., Cullen, D.M., Desesquelles, P., Domingo-Pardo, C., Dudouet, J., Eberth, J., Gonzalez, V., Goupil, J., Harkness-Brennan, L.J., Hess, H., Judson, D.S., Jungclaus, A., Korten, W., Labiche, M., Lefevre, A., Menegazzo, R., Mengoni, D., Nyberg, J., Perez-Vidal, R.M., Podolyak, Zs., Pullia, A., Recchia, F., Reiter, P., Saillant, F., Salsac, M.D., Sanchis, E., Stezowski, O., Theisen, Ch., Valiente-Dobon, J.J., Holt, J.D., Menendez, J., Schwenk, A., Simonis, J., 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 Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique 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 Laue-Langevin (ILL), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), ILL, 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), 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)-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)

Subjects
Nuclear Theory (nucl-th), nucl-th, Nuclear Theory, Nuclear Physics - Theory, Starke Wechselwirkung und exotische Kerne – Abteilung Blaum, FOS: Physical sciences, Nuclear Physics - Experiment, ddc:530, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, Nuclear Structure, Nuclear Experiment
Abstract

To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2+ state in neutron-rich O20,τ(22+)=150−30+80fs, and an estimate for the lifetime of the second 2+ state in C16 have been obtained for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds of femtoseconds range by analyzing the Doppler-shifted γ-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction O18(7.0MeV/u)+Ta181. The requested sensitivity could only be reached owing to the excellent performances of the Advanced γ-Tracking Array AGATA, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The experimental lifetimes agree with predictions of ab initio calculations using two- and three-nucleon interactions, obtained with the valence-space in-medium similarity renormalization group for O20 and with the no-core shell model for C16. The present measurement shows the power of electromagnetic observables, determined with high-precision γ spectroscopy, to assess the quality of first-principles nuclear structure calculations, complementing common benchmarks based on nuclear energies. The proposed experimental approach will be essential for short lifetime measurements in unexplored regions of the nuclear chart, including r-process nuclei, when intense beams, produced by Isotope Separation On-Line (ISOL) techniques, become available. To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2+ state in neutron-rich 20O, tau(2+_2 ) = 150(+80-30) fs, and an estimate for the lifetime of the second 2+ state in 16C have been obtained, for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds femtoseconds range, by analyzing the Doppler-shifted gamma-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction 18O (7.0 MeV/u) + 181Ta. The requested sensitivity could only be reached owing to the excellent performances of the AGATA gamma-tracking array, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The experimental lifetimes agree with predictions of ab initio calculations using two- and three-nucleon interactions, obtained with the valence-space in-medium similarity renormalization group for 20O, and with the no-core shell model for 16C. The present measurement shows the power of electromagnetic observables, determined with high-precision gamma spectroscopy, to assess the quality of first-principles nuclear structure calculations, complementing common benchmarks based on nuclear energies. The proposed experimental approach will be essential for short lifetimes measurements in unexplored regions of the nuclear chart, including r-process nuclei, when intense ISOL-type beams become available.

Published
2020
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2. Isospin properties of nuclear pair correlations from the level structure of the self-conjugate nucleus 88Ru

Author

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

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N = Z) nuclide 88 44Ru44 has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in 88Ru were populated via the 54Fe(36Ar; 2n )88Ru fusion-evaporation reaction at the Grand Acc�el�erateur National d'Ions Lourds (GANIL) accelerator complex. The observed -ray cascade is assigned to 88Ru using clean prompt - -2-neutron coincidences in anti-coincidence with the detection of charged particles, con�rming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N > Z nuclides. The direct observation of such a \delayed" rotational alignment in a deformed N = Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.

Published
2019

3. Shell evolution beyond N = 40: $^{69,71,73}$Cu

Author

Sahin, E., Doncel, M., Sieja, K., de Angelis, G., Gadea, A., Quintana, B., Gorgen, A., Modamio, V., Mengoni, D., Valiente-Dobon, J.J., John, P.R., Albers, M., Bazzacco, D., Benzoni, G., Birkenbach, B., Cederwall, B., Clement, E., Curien, D., Corradi, L., Desesquelles, P., Dewald, A., Didierjean, F., Duchene, G., Eberth, J., Erduran, M.N., Farnea, E., Fioretto, E., de France, G., Fransen, C., Gernhauser, R., Gottardo, A., Hackstein, M., Hagen, T., Hernandez-Prieto, A., Hess, H., Huyuk, T., Jungclaus, A., Klupp, S., Korten, W., Kusoglu, A., Lenzi, S. M., Ljungvall, J., Louchart, C., Lunardi, S., Menegazzo, R., Michelagnoli, C., Mijatović, Tea, Million, B., Molini, P., Montagnoli, G., Montanari, D., Moller, O., Napoli, D. R., Obertelli, A., Orlandi, R., Pollarolo, G., Pullia, A., Recchia, F., Reiter, P., Rosso, D., Rother, W., Salsac, M.-D., Scarlassara, F., Schlarb, M., Siem, S., Singh, Pushpendra P., Soderstrom, P.-A., Stefanini, A.M., Stezowski, O., Sulignano, B., Szilner, Suzana, Theisen, Ch., Ur, C.A., Yalcinkaya, M., 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 Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CSNSM SNO, 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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), 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), 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 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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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
21.10.Tg, 21.60.Cs, 23.20.Lv, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], multinucleon transfer reactions, AGATA Demonstrator, recoil-distance Doppler-shift method, Nuclear Experiment
Abstract

International audience; The level structure of the neutron-rich 69Cu, 71Cu, and 73Cu isotopes has been investigated by means ofmultinucleon transfer reactions. The experiment was performed at Laboratori Nazionali di Legnaro using theAGATA Demonstrator array coupled to the PRISMA magnetic spectrometer. Lifetimes of excited states inCu nuclei were measured with the recoil-distance Doppler-shift method. The resulting electromagnetic matrixelements for transitions from excited states in 69,71,73Cu nuclei are used to assess the collective or single-particlecharacter of these states. The results are compared with predictions of large-scale shell-model calculations, givingfurther insight into the evolution of the proton pf shell as neutrons fill the 1g9/2 orbital.

Published
2015
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4. Shape evolution in the neutron-rich Osmium isotopes: prompt gamma-ray spectroscopy of 196Os

Author

John, P.R., Modamio, V., Valiente-Dobon, J.J., Mengoni, D., Lunardi, S., Rodriguez, T.R., Bazzacco, D., Gadea, A., Wheldon, C., Alexander, T., de Angelis, G., Ashwood, N., Barr, M., Benzoni, G., Birkenbach, B., Bizzeti, P.G., Bizzeti-Sona, A.M., Bottoni, S., Bowry, M., Bracco, A., Browne, F., Bunce, M., Camera, F., Cederwall, B., Corradi, L., Crespi, F.C.L., Desesquelles, P., Eberth, J., Farnea, E., Fioretto, E., Gorgen, A., Gottardo, A., Grebosz, J., Grente, L., Hess, H., Jungclaus, A., Kokalova, Tz., Korichi, A., Korten, W., Kusoglu, A., Lenzi, S., Leoni, S., Ljungvall, J., Maron, G., Meczynski, W., Menegazzo, R., Michelagnoli, C., Mijatovic, Tea, Million, B., Molini, P., Montagnoli, G., Montanari, D., Napoli, D.R., Nolan, P., Oziol, Ch., Podolyak, Zs., Pollarolo, G., Pullia, A., Quintana, B., Recchia, F., Reiter, P., Roberts, O.J., Rosso, D., Sahin, E., Salsac, M.-D., Scarlassara, F., Sferrazza, M., Simpson, J., Soderstrom, P.-A., Stefanini, A.M., Stezowski, O., Szilner, Suzana, Theisen, Ch., Ur, C.A., and Walshe, J.

Subjects
Nuclear Theory, shape transition, neutron rich nuclei, gamma-ray spectroscopy, Nuclear Experiment
Abstract

The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron rich 196Os nucleus through in-beam gamma-ray spectroscopy using a two-proton transfer reaction from a 198Pt target to a 82Se beam. The beam-like recoils were detected and identified with the large-acceptance magnetic spectrometer PRISMA and the coincident gamma rays were measured with the AGATA demonstrator. The de-excitation of the low-lying levels of the yrast-band of 196Os were identified for the first time. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even 188, 198Os isotopes. The new results suggest a smooth transition in the Os isotopes from a more axial rotational behaviour towards predominately vibrational nuclei through triaxial configurations. An almost perfect gamma-unstable/triaxial rotor yrast-band is predicted for 196Os which is in agreement with the experimentally measured excited states.

Published
2014
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5. Nuclear charge-exchange excitations in localized covariant density functional theory

Author

Liang, H. Z., Meng, J., Nakatsukasa, T., Niu, Z. M., Ring, P., Roca-Maza, X., Giai, N. Van, Zhao, P. W., Lunardi, S., Bizzeti, P.G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente-Dobon, J.J., CSIE, NDHU, National Dong-Hwa University, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, 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), Dipartimento di Fisica, Università degli Studi di Firenze, and Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI)

Subjects
Physics, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, QC1-999, Structure (category theory), FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Residual, Effective nuclear charge, Fock space, Nuclear Theory (nucl-th), Quantum mechanics, Scheme (mathematics), Covariant transformation, Density functional theory, Physics::Atomic Physics, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The recent progress in the studies of nuclear charge-exchange excitations with localized covariant density functional theory is briefly presented, by taking the fine structure of spin-dipole excitations in 16O as an example. It is shown that the constraints introduced by the Fock terms of the relativistic Hartree-Fock scheme into the particle-hole residual interactions are straightforward and robust., 4 pages, 1 figure, Proceedings of INPC2013, Florence, Italy, 2-7 June 2013

Published
2013
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6. Proton-hole states in the N=30 neutron-rich 49K isotope

Author

Broda, R., Wrzesinski, J, Gadea, A., Marginean, N., Fornal, B., Corradi, L., Stefanini, A.M., Krolas, W., Pawlat, T., Szpak, B., Lunardi, S., Valiente-Dobon, J.J., Mengoni, D., Farnea, E., Carpenter, M.P., De Angelis, G., Della Vedova, F., Fioretto, E., Guiot, B., Janssens, R.V.F., Mantica, P.F., Mason, P., Montagnoli, G., Napoli, D.R., Orlandi, R., Pokrovskiy, I., Pollarolo, G., Sahin, E., Scarlassara, F., Silvestri, R., Szilner, Suzana, Ur, C.A., Trotta, M., and Zhu, S.

Subjects
multinucleon transfer reaction, particle-gamma coincidence, gamma-gamma coincidence, shell model, Nuclear Theory, Nuclear Experiment
Abstract

Excited states in the N = 30 neutron-rich 49K have been studied using multi-nucleon transfer reactions with thin targets and the PRISMA-CLARA spectrometer combined with thick-target - coincidence data from Gammasphere. The d3/2 proton-hole state is located 92 keV above the s1/2 ground state and the proton-particle f7/2 state is suggested at 2104 keV. Three other levels are established as involving the coupling to 2+ of two neutrons above the N = 28 shell. The measured or estimated lifetimes served to reinforce the interpretation of the observed level structure which is found to be in satisfactory agreement with shell model calculations.

Published
2010

7. Lifetime measurements of excited states in neutron-rich 44, 46Ar populated via a multinucleon transfer reaction

Author

Mengoni, Daniele, Valiente-Dobon, J.J., Gadea, A., Lunardi, Santo, Lenzi, S.M., Broda, R., Dewald, A., Pissulla, T., Angus, L.J., Aydin, S., Bazzacco, D., Benzoni, G., Bizzeti, P.G., Bizzeti-Sona, A.M., Boutachkov, P., Corradi, Lorenzo, Crespi, F., de Angelis, G., Farnea, E., Fioretto, E., Goergen, A., Gorska, Magda, Gottardo, A., Grodner, E., Howard, A.M., Krolas, W., Leoni, S., Mason, P., Montanari, D., Montagnoli, G., Napoli, D.R., Obertelli, A., Orlandi, R., Pawlat, T., Pollarolo, G., Recchia, F., Algora, A., Rubio, B., Sahin, Eda, Scarlassara, F., Silvestri, R., Smith, J.F., Stefanini, A.M., Steppenbeck, D., Szilner, Suzana, Ur, C.A., Wady, P.T., and Wrzesinski, J.

Subjects
Nuclear Theory, multinucleon transfer reactions, the differential recoil distance Doppler shift method, lifetimes, shell-model calculations
Abstract

Lifetimes of low-lying excited states of the neutron-rich 44, 46Ar nuclei, populated via multinucleon transfer reactions, are measured by means of the differential recoil distance Doppler shift method. The extracted electromagnetic transition probabilities are compared with previous intermediate-energy Coulomb-excitation measurements and with large-scale shell-model calculations. The increase in the deduced B(E2 ; 2+→0+) transition probability from 44Ar to the closed-shell nucleus 46Ar contradicts the earlier results of Coulomb-excitation experiments. Shell-model calculations using different effective interactions agree with the new measured values.

Published
2010
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8. Spectroscopy of neutron-rich 168, 170Dy : Yrast band evolution close to the NpNn valence maximum

Author

Soderstrom, P.-A., Nyberg, J., Regan, P.H., Ashley, S.F., Catford, W.N., Gelletly, W., Jones, G.A., Liu, Z., Pietri, S., Podolyak, Zs., Steer, S.J., Thompson, N.J., Williams, S.J., Algora, A., de Angelis, G., Corradi, L., Fioretto, E., Gottardo, A., Grodner, E., He, C.Y., Napoli, D., Recchia, F., Sahin, E., Silvestri, R., Stefanini, A.M., Valiente-Dobon, J.J., Aydin, S., Bazzacco, D., Farnea, E., Lunardi, S., Mason, P., Menegazzo, R., Mengoni, D., Montagnoli, G., Scarlassara, F., Ur, C.A., Casperson, R.J., Werner, V., Cederkall, J., Chapman, R., Keyes, K., Labiche, M., Liang, X., Smith, J.F., Spohr, K.-M., Fahlander, C., Freeman, S.J., Gadea, A., Marginean, N., Ollier, J., Pollarolo, G., Szilner, S., Tveten, G.M., Xu, F.R., and Zhu, J.Y.

Subjects
nuclear structure, yrast band, transfer reaction, Nuclear Theory, FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The yrast sequence of the neutron-rich dysprosium isotope 168Dy has been studied using multi-nucleon transfer reactions following collisions between a 460-MeV 82Se beam and a 170Er target. The reaction products were identified using the PRISMA magnetic spectrometer and the gamma rays detected using the CLARA HPGe-detector array. The 2+ and 4+ members of the previously measured ground state rotational band of 168Dy have been confirmed and the yrast band extended up to 10+. A tentative candidate for the 4+ to 2+ transition in 170Dy was also identified. The data on these nuclei and on the lighter even-even dysprosium isotopes are interpreted in terms of Total Routhian Surface calculations and the evolution of collectivity in the vicinity of the proton-neutron valence product maximum is discussed., 15 pages, 7 figures, submitted to Phys. Rev. C

Published
2010

9. New Isomers in the Neutron-Rich Region Beyond 208Pb

Author

N. Goel, F. C. L. Crespi, M. Pfützner, A. Bracco, G. de Angelis, N. Alkhomashi, C. A. Ur, K. Eppinger, Dirk Rudolph, R. Menegazzo, H. Schaffner, E. Sahin, A. Sharma, J. Grebosz, S. Pietri, A. Gadea, O. Wieland, T.P.D. Swan, Philip M Walker, F. Naqvi, S. Leoni, D. Mengoni, C. Domingo-Pardo, J. J. Valiente-Dobón, B. Million, I. Szarka, D. Bazzacco, V. Modamio, T. Habermann, A. Corsi, C. Nociforo, P. Boutachkov, M. Doncel, F. Camera, A. I. Morales, P. Strmen, H. Geissel, M. Bowry, G. Benzoni, R. Janik, S. M. Lenzi, Roberto Vicençotto Ribas, F. Recchia, Yassid Ayyad, M. Bunce, M. L. Cortés, Davinder Siwal, D. R. Napoli, N. Kurz, Zs. Dombrádi, Robert Hoischen, J. Alcántara Núñez, S.K. Mandal, A. M. Denis Bacelar, T. Engert, S. Lunardi, S. Klupp, J. Benlliure, P.R.P. Allegro, W. Prokopowicz, A. Algora, Alison Bruce, P. H. Regan, B. Sitar, P. R. John, E. Gregor, A. Y. Deo, Enrique Casarejos, A. Prochazka, A. Gottardo, I. Kojouharov, R. Nicolini, K. Steiger, G. F. Farrelly, Zs. Podolyák, J. Gerl, Matthew Reed, E. Farnea, N. Al-Dahan, M. Górska, H. J. Wollersheim, H. Weick, F. Farinon, Lunardi, S., Bizzeti, P.G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., and Valiente-Dobon, J.J.

Subjects
Physics, Isotope, Isotopes of uranium, QC1-999, Nuclear Theory, Nuclear structure, Mercury Isotopes, Nuclear physics, Uranium-238, Subatomic Physics, High mass, Neutron, ddc:530, Statistical physics, Spectroscopy, Nuclear Experiment
Abstract

25th International Nuclear Physics Conference, Florence, Italy, 2 Jun 2013 - 7 Jun 2013; The European physical journal / Web of Conferences Web of Conferences : proceedings proceedings 66, 02043 (2014). doi:10.1051/epjconf/20146602043, Published by EDP Sciences, Les Ulis

Published
2014
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10. Exploring the stability of super heavy elements: First Measurement of the Fission Barrier of $^{254} $No

Author

David Boilley, J. Piot, K. Hauschild, D. H. Potterveld, T. Lauristen, T. L. Khoo, F. G. Kondev, S. Zhu, M. Asai, E. A. McCutchan, G. Henning, C. J. Chiara, C. J. Lister, P. Reiter, Andreas Martin Heinz, C. Nair, A. M. Rogers, N. Rowley, Martín Alcorta, M. P. Carpenter, B. P. Kay, A. Lopez-Martens, Calem Hoffman, G. Gurdal, P. F. Bertone, B. B. Back, P. Chowdhury, B. Gall, S. Lakshmi, A. V. Karpov, R. V. F. Janssens, D. Seweryniak, Paul Greenlees, 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), CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Université de Caen Normandie (UNICAEN), Normandie Université (NU), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique 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)-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 de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), 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), Lunardi, S., Bizzeti, P.G., Kabana, Sonia, Bucci, C., Chiari, M., Dainese, A., Nezza, P. Di, Menegazzo, R., Nannini, A., Signorini, C., and Valiente-Dobon, J.J.

Subjects
Physics, ta114, Fission, heavy elements, QC1-999, Nuclear Theory, fission barrier, Transactinide element, stability, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, Nuclear physics, medicine.anatomical_structure, medicine, Nuclear structure, Multiplicity (chemistry), Total energy, Atomic physics, Nuclear Experiment, Saturation (magnetic), Nucleus, Excitation, ComputingMilieux_MISCELLANEOUS
Abstract

The gamma-ray multiplicity and total energy emitted by the heavy nucleus 254No have been measured at 2 different beam energies. From these measurements, the initial distributions of spin I and excitation energy E * of 254No were constructed. The distributions display a saturation in excitation energy, which allows a direct determination of the fission barrier. 254No is the heaviest shell-stabilized nucleus with a measured fission barrier. © Owned by the authors, published by EDP Sciences, 2014.

Published
2013
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11. New density-independent interactions for nuclear structure calculations

Author

F. Raimondi, K. Bennaceur, Jacek Dobaczewski, Théorie, 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 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), Lunardi, S., Bizzeti, P.G., Kabana, Sonia, Bucci, C., Chiari, M., Dainese, A., Nezza, P. Di, Menegazzo, R., Nannini, A., Signorini, C., and Valiente-Dobon, J.J.

Subjects
Physics, nuclear structure calculations, ta114, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, QC1-999, Nuclear structure, FOS: Physical sciences, Density independent, Nuclear matter, Nuclear Theory (nucl-th), Quantum electrodynamics, Atomic nucleus, Saturation (chemistry), density-independent interactions
Abstract

We present a new two-body finite-range and momentum-dependent but density-independent effective interaction, which can be interpreted as a regularized zero-range force. We show that no three-body or density-dependent terms are needed for a correct description of saturation properties in infinite matter, that is, on the level of low-energy density functional, the physical three-body effects can be efficiently absorbed in effective two-body terms. The new interaction gives a very satisfying equation of state of nuclear matter and opens up extremely interesting perspectives for the mean-field and beyond-mean-field descriptions of atomic nuclei., 4 pages, including 2 figures and 1 table, explanations added, Figure 1 corrected, to be published in EPJ Web of Conferences

Published
2014
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