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Your search keyword '"Dinescu, I.E."' showing total 3 results
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3 results on '"Dinescu, I.E."'

1. Shape transitions between and within Zr isotopes

Author

Werner V., Witt W., Beck T., Pietralla N., Boromiza M., Clisu C., Costache C., Dinescu I.E., Ionescu A., John P.R., Koseoglou P., Margineăn N., Margineăn R., Mihai C., Mihai R.E., Mitu A., Negret A., Nita C.R., Olacel A., Pascu S., Serban A., Sotty C., Stan L., Suvaila R., Toma S., Turturica A., Ujeniuc S., and Wiederhold J.

Subjects
Physics, QC1-999
Abstract

The Zirconium isotopes across the N=56,58 neutron sub­shell closures have been of special interest since years, sparked by the near doubly-magic features of 96Zr and the subsequent rapid onset of collectivity with a deformed ground-state structure already in 100Zr. Recent state-of-the-art shell model approaches did not only correctly describe this shape-phase transition in the Zr isotopic chain, but alsothe coexistence of non-collective structures and pronounced collectivity especially in 96,98Zr. Theisotope 98Zr is located on the transition from spherical to deformed ground state structures. We summarize recent experimental work to obtain the B(E2) excitation strengths of the first 2+ state of98Zr, including a new experiment employing the recoil-distance Doppler-shift method following a two-neutron transfer reaction.

Published
2019
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2. Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction

Author

Mărginean, N., Little, D., Tsunoda, Y., Leoni, S., Janssens, R.V.F., Fornal, B., Otsuka, T., Michelagnoli, C., Stan, L., Crespi, F.C.L., Costache, C., Lica, R., Sferrazza, M., Turturica, A., Ayangeakaa, A.D., Auranen, K., Barani, M., Bender, P.C., Bottoni, S., Boromiza, M., Bracco, A., Călinescu, S., Campbell, C.M., Carpenter, M.P., Chowdhury, P., Ciemała, M., `nczak, N. Cieplicka-Ory, Cline, D., Clisu, C., Crawford, H.L., Dinescu, I.E., Dudouet, J., Filipescu, D., Florea, N., Forney, A.M., Fracassetti, S., Gade, A., Gheorghe, I., Hayes, A.B., Harca, I., Henderson, J., Ionescu, A., Iskra, Ł.W., Jentschel, M., Kandzia, F., Kim, Y.H., Kondev, F.G., Korschinek, G., Köster, U., Krishichayan, M., Krzysiek, M., Lauritsen, T., Li, J., Mărginean, R., Maugeri, E.a., Mihai, C., Mihai, R.E., Mitu, A., Mutti, P., Negret, A., Niţă, C.R., Olăcel, A., Oprea, A., Pascu, S., Petrone, C., Porzio, C., Rhodes, D., Seweryniak, D., Schumann, D., Sotty, C., Stolze, S.M., Şuvăilă, R., Toma, S., Ujeniuc, S., Walters, W.B., Wu, C.Y., Wu, J., Zhu, S., Ziliani, S., Institut Laue-Langevin (ILL), ILL, Institut de Physique Nucléaire de Lyon (IPNL), 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), [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Physique atomique et nucléaire, Nuclear Physics
Abstract

International audience; The low-spin structure of the semimagic Ni64 nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0+ excitation is located at a surprisingly high energy (3463 keV), with a collective 2+ state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N=40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N.

Published
2020
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3. Shape transitions between and within Zr isotopes.

Author

de Angelis, G., Corradi, L., Werner, V., Witt, W., Beck, T., Pietralla, N., Boromiza, M., Clisu, C., Costache, C., Dinescu, I.E., Ionescu, A., John, P.R., Koseoglou, P., Margineăn, N., Margineăn, R., Mihai, C., Mihai, R.E., Mitu, A., Negret, A., and Nita, C.R.

Subjects
ZIRCONIUM isotopes, NEUTRONS, NUCLEAR shell theory, GROUND state energy, NUCLEAR structure
Abstract

The Zirconium isotopes across the N=56,58 neutron sub-shell closures have been of special interest since years, sparked by the near doubly-magic features of 96Zr and the subsequent rapid onset of collectivity with a deformed ground-state structure already in 100Zr. Recent state-of-the-art shell model approaches did not only correctly describe this shape-phase transition in the Zr isotopic chain, but alsothe coexistence of non-collective structures and pronounced collectivity especially in 96,98Zr. Theisotope 98Zr is located on the transition from spherical to deformed ground state structures. We summarize recent experimental work to obtain the B(E2) excitation strengths of the first 2+ state of98Zr, including a new experiment employing the recoil-distance Doppler-shift method following a two-neutron transfer reaction. [ABSTRACT FROM AUTHOR]

Published
2019
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