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262 results on '"Bizzeti P. G."'

251. Two-neutrino 2β decay of 116Cd and new half-life limits on 2β decay of 180W and 186W.

Author

Danevich, F. A., Georgadze, A. Sh., Kobychev, V. V., Nikolaiko, A. S., Ponkratenko, O. A., Tretyak, V. I., Zdesenko, S. Yu., Zdesenko, Yu. G., Bizzeti, P. G., Fazzini, T. F., and Maurenzig, P. R.

Subjects
*NEUTRINOLESS double beta decay, *NEUTRINOS
Abstract

Studies of the 2β decay of 116Cd, 180W and 186W have been performed in the Solotvina Underground Laboratory with the help of the super-low background 116CdWO4 crystal scintillators. The half-life value of the two-neutrino 2β decay of 116Cd has been revised as T1/22ν=2.9±0.1(stat)−0.3+0.4(syst)×1019 yr. Besides, the new half-live limits on different modes of this process have been established for two natural tungsten isotopes, in particular, T1/2≥1.0 (1.6)×1021 yr at 90% (68%) C.L. for the neutrinoless 2β decay of 186W to the ground (0+) and first excited (2+) level of 186Os. [Copyright &y& Elsevier]

Published
2003
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252. Elastic and break-up of the 1n-halo 11Be nucleus

Author

G. Randisi, H. Jeppesen, M. J. G. Borge, Ismael Martel, L. Acosta, R. Raabe, M. Fisichella, A. Di Pietro, Joaquín Gómez-Camacho, Viviana Scuderi, L. M. Fraile, M. G. Pellegriti, A. Musumarra, F. Rizzo, M. Lattuada, A. M. Moro, P. Figuera, Olof Tengblad, Mile Zadro, D. Voulot, F. Wenander, A. Maira Vidal, F. Amorini, F. Perez-Bernal, Michele Papa, Matko Milin, D. Torresi, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, 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, Coupling, Range (particle radiation), Scattering, elastic scattering, breakup, angular distributions, 10, 11Be+64Zn, QC1-999, Interference (wave propagation), Molecular physics, Engineering physics, medicine.anatomical_structure, Coulomb, medicine, Halo, Absorption (electromagnetic radiation), Nucleus
Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0.-- Trabajo presentado a la: "International Nuclear Physics Conference" (INPC), celebrada en Firenze (Italia) del 2 al 7 de junio de 2013.-- et al., The elastic and break-up angular distributions of the 10,11Be+64Zn reactions measured at Ec.m. ≈1.4 VC have been analysed within the CCDC and O.M. frameworks. The suppression of the Coulomb-nuclear interference, observed in the 11Be scattering case with respect to the 10Be, has been interpreted as due to a long range absorption owing to the coupling with the break-up (Coulomb and nuclear) channels. The presence of 10Be events on the 11Be experiment data have been explained as due mainly to break-up processes. C Owned by the authors, published by EDP Sciences, 2014

Published
2014

253. Evolution of collectivity in the78Ni region: Coulomb excitation of74Ni at intermediate energies

Author

S. Lunardi, T. Marchi, G. de Angelis, T. Baugher, D. Bazin, J. Berryman, A. Bonaccorso, R. Clark, L. Coraggio, A. Covello, H. Crawford, M. Doncel, E. Farnea, A. Gade, A. Gadea, A. Gargano, T. Glasmacher, A. Gottardo, F. Gramegna, R. Kumar, S. M. Lenzi, S. McDaniel, C. Michelagnoli, D. R. Napoli, B. Quintana, A. Ratkiewicz, F. Recchia, E. Sahin, R. Stroberg, J. J. Valiente Dob?n, D. Weisshaar, K. Wimmer, R. Winkler, P. G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, J. J. Valiente Dobon, ITACO, Nunzio, Lunardi, S., Marchi, T., de Angelis, G., Baugher, T., Bazin, D., Berryman, J., Bonaccorso, A., Clark, R., Coraggio, L., Covello, A., Crawford, H., Doncel, M., Farnea, E., Gade, A., Gadea, A., Gargano, A., Glasmacher, T., Gottardo, A., Gramegna, F., Itaco, Nunzio, Kumar, R., Lenzi, S. M., Mcdaniel, S., Michelagnoli, C., Napoli, D. R., Quintana, B., Ratkiewicz, A., Recchia, F., Sahin, E., Stroberg, R., Valiente Dob?n, J. J., Weisshaar, D., Wimmer, K., Winkler, R., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente Dobon, J. J., S., Lunardi, T., Marchi, G., de Angeli, T., Baugher, D., Bazin, J., Berryman, A., Bonaccorso, R., Clark, L., Coraggio, A., Covello, H., Crawford, M., Doncel, E., Farnea, A., Gade, A., Gadea, A., Gargano, T., Glasmacher, A., Gottardo, F., Gramegna, R., Kumar, S. M., Lenzi, S., Mcdaniel, C., Michelagnoli, D. R., Napoli, B., Quintana, A., Ratkiewicz, F., Recchia, E., Sahin, R., Stroberg, J. J., Valiente Dob?n, D., Weisshaar, K., Wimmer, R., Winkler, P. G., Bizzeti, C., Bucci, M., Chiari, A., Dainese, P., Di Nezza, R., Menegazzo, A., Nannini, C., Signorini, and J. J., Valiente Dobon

Subjects
Physics, Stable isotope ratio, QC1-999, Nuclear Theory, Shell (structure), Coulomb excitation, Physics and Astronomy (all), medicine.anatomical_structure, Isospin, medicine, Neutron, Tensor, Atomic physics, Nuclear Experiment, Nucleus
Abstract

The study of the collective properties of nuclear excitations far from stability provides information about the shell structure at extreme conditions. Spectroscopic ob- servables such as the energy or the transition probabilities of the lowest states, in nuclei with large neutron excess, allow to probe the density and isospin dependence of the ef- fective interaction. Indeed, it was recently shown that tensor and three-body forces play an important role in breaking and creating magic numbers. Emblematic is the case of the evolution of the Ni isotopic chain where several features showed up moving from the most neutron rich stable isotope ( 64 Ni) towards the 78 Ni nucleus where the large neutron excess coincides with a double shell closure. In this framework, we have recently per- formed an experiment with the goal to extract the B(E2; 0 + ! 2 + ) value for the 74 Ni nucleus in an intermediate-energy Coulomb excitation experiment: preliminary results are discussed.

Published
2014

254. Projectile structure effects in the collisions 6, 7Li+64Zn around the Coulomb barrier

Author

E. Strano, C. Maiolino, A. Musumarra, Valentina Scuderi, P. Figuera, A. Di Pietro, V. Ostashko, M. Lattuada, Mile Zadro, G. Randisi, Domenico Santonocito, Matko Milin, M. G. Pellegriti, Maria Fisichella, D. Torresi, 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, Elastic scattering, elastic scattering, fusion, 6, 7Li+64Zn, Fusion, Projectile, Activation technique, QC1-999, Coulomb barrier, Atomic physics, Optical potential, Excitation
Abstract

We measured elastic scattering angular distributions and cross sections for heavy residue production for the systems 6,7 Li+ 64 Zn at different energies around the Coulomb barrier. The elastic scattering angular distributions have been reproduced by optical model fits using a renormalized double folding potential for the real and imaginary parts. Absence of usual threshold anomaly in the optical potential was found. The excitation functions for heavy residue production were measured using an activation technique. Comparison with different calculations suggest that complete fusion is the dominant reaction mechanism above the barrier whereas, below the Coulomb barrier, incomplete fusion and transfer dominate.

Published
2014

255. Lifetime measurements in light barium isotopes.

Author

Michelagnoli, C., Ur, C. A., Brandolini, F., Bizzeti, P. G., Bizzeti-Sona, A. M., Giannatiempo, A., Nannini, A., Sona, P., Tonev, D., Dewald, A., Bazzacco, D., de Angelis, G., Farnea, E., Fransen, C., Gadea, A., Lenzi, S., Lunardi, S., Melon, B., Menegazzo, R., and Mengoni, D.

Subjects
*BARIUM, *DOPPLER effect, *ISOTOPES, *PARTICLES (Nuclear physics), *HEAVY metals
Abstract

The transition strenghts for the low—lying levels of 122,124Ba have been determined analysing the Recoil Distance Doppler Shift data by the Differential Decay Curve Method. The trend of normalised B(E2) reveals a drop in correspondance of the 81+ state. This feature is also present in 122Ba: entering the backbending region the interplay between collective and quasiparticle degrees of freedom have to be carefully taken into account. [ABSTRACT FROM AUTHOR]

Published
2010
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256. Electromagnetic transition strengths in33S

Author

D. Mengoni, E. A. Stefanova, A. M. Bizzeti-Sona, P. G. Bizzeti, G. Tz. Gavrilov, I. Deloncle, Dimitar Tonev, A. Gottardo, B. I. Dimitrov, C. A. Ur, M. S. Yavahchova, F. Recchia, H. Laftchiev, S. Aydin, G. de Angelis, Tz K Marinov, R. Orlandi, N. Goutev, D. R. Napoli, E. Farnea, J J Valente-Dobon, S. Lunardi, P. Petkov, C Michelangoli, E. Sahin, [Dimitrov, B. I. -- Goutev, N. -- Gavrilov, G. Tz. -- Tonev, D. -- Petkov, P. -- Laftchiev, H. -- Stefanova, E. A. -- Marinov, Tz. K. -- Yavahchova, M. S.] BAS, Inst Nucl Res & Nucl Energy, BG-1784 Sofia, Bulgaria -- [de Angelis, G. -- Recchia, F. -- Aydin, S. -- Gottardo, A. -- Mengoni, D. -- Michelangoli, C. -- Napoli, D. R. -- Orlandi, R. -- Sahin, E. -- Valente-Dobon, J. J.] INFN, Lab Nazl Legnaro, I-35020 Legnaro, Italy -- [Farnea, E. -- Ur, C. A. -- Lunardi, S.] INFN, Dipartimento Fis, Padua, Italy -- [Aydin, S.] Aksaray Univ, Dept Phys, TR-68100 Aksaray, Turkey -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M.] INFN, Dipartimento Fis Universita, Florence, Italy -- [Deloncle, I.] Univ Paris 11, CSNSM, IN2P3 CNRS, Orsay, France, Tonev, Dimitar -- 0000-0003-4431-6157, Napoli, Daniel Ricardo -- 0000-0002-8154-6958, GOTTARDO, Andrea -- 0000-0002-0390-5767, Sahin, Eda -- 0000-0003-0683-5140, Recchia, Francesco -- 0000-0002-8428-0112, and Sabire Yazıcı Fen Edebiyat Fakültesi

Subjects
Nuclear reaction, History, Mathematical model, Chemistry, Attenuation, Computer Science Applications, Education, symbols.namesake, Nuclear magnetic resonance, Excited state, symbols, Alpha decay, Atomic physics, Isotopes of magnesium, Doppler effect, Radioactive decay
Abstract

20th International School on Nuclear Physics, Neutron Physics and Applications -- SEP 16-22, 2013 -- Varna, BULGARIA, WOS: 000346180900049, An experiment using the Doppler Shift Attenuation Method was performed for S-33 at Laboratori Nazionali di Legnaro using the multi-detector array GASP. Excited states were populated in the fusion-evaporation reaction Mg-24(N-14, alpha p)(33) S. The data were analyzed using the Differential Decay Curve Method with gates set on the shifted component of a directly feeding transition thus eliminating the problem of the unobserved feeding. Reliable and precise lifetimes were determined and the data derived for the reduced transition probabilities are going to be compared to the predictions of shell model calculations., Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Bulgarian Nucl Regulatory Agcy, Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Bulgarian Minist Educ Youth & Sci, Bulgarian Science Fund [DFNI-E 01/2]; Bulgarian Ministry of Education and Science., This research has been supported by Bulgarian Science Fund under contract DFNI-E 01/2 and by a NUPNET - NEDENSAA project funded by the Bulgarian Ministry of Education and Science.

Published
2014
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257. Measurement of Li+Sn fusion excitation functions around the Coulomb barrier using an improved activation technique

Author

Chris Ruiz, M. Lattuada, A. Di Pietro, A. Musumarra, Mile Zadro, A. C. Shotter, P. Figuera, C. Marchetta, Viviana Scuderi, E. Strano, D. Torresi, Maria Fisichella, M. G. Pellegriti, 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
Excitation function, Fusion, Chemistry, Physics, QC1-999, Activation technique, Coulomb barrier, fusion excitation function, Li+Sn, neutron transfer, breakup, Neutron, Penetration (firestop), Atomic physics, Breakup, Excitation
Abstract

Fusion excitation functions have been measured for the 6 Li+120 Sn and 7 Li+119 Sn systems at energies around the Coulomb barrier, to investigate the effects of neutron transfer and breakup on the fusion process. At energies above the barrier, a suppression of the complete fusion excitation function with respect to the prediction of the 1D - Barrier Penetration Model has been observed, in both cases. At energies below the Coulomb barrier, no significant difference between the two excitation function, imputable to the different neutron transfer Q-values of the two systems has been observed.

Published
2014
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258. Spectroscopy of odd-mass cobalt isotopes toward the N = 40 subshell closure and shell-model description of spherical and deformed states.

Author

Recchia, F., Lenzi, S. M., Lunardi, S., Farnea, E., Gadea, A., Mărginean, N., Napoli, D. R., Nowacki, F., Poves, A., Valiente-Dobón, J. J., Axiotis, M., Aydin, S., Bazzacco, D., Benzoni, G., Bizzeti, P. G., Bizzeti-Sona, A. M., Braceo, A., Bucurescu, D., Caurier, E., and Corradi, L.

Subjects
*COBALT isotopes, *ATOMIC mass, *SPECTRUM analysis, *NUCLEAR models, *DEFORMATIONS (Mechanics), *PARTICLES (Nuclear physics)
Abstract

The neutron-rich cobalt isotopes up to A = 67 have been studied through multinucleon transfer reactions by bombarding a 238U target with a 460-MeV 70Zn beam. Unambiguous identification of prompt &ggr; rays belonging to each nucleus has been achieved using coincidence relationships with the ions detected in a high-acceptance magnetic spectrometer. The new data are discussed in terms of the systematics of the cobalt isotopes and interpreted with large-scale shell-model calculations in the fpgd model space. In particular, very different shapes can be described in 67Co, at the edge of the island of inversion at N = 40, where a low-lying highly deformed band coexists with a spherical structure. [ABSTRACT FROM AUTHOR]

Published
2012
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259. Coupling a CLOVER detector array with the PRISMA magnetic spectrometer - Investigation of moderately neutron-rich nuclei populated by multinucleon transfer and deep inelastic collisions

Author

Gadea, A., Napoli, D. R., Angelis, G., Menegazzo, R., Stefanini, A. M., Corradi, L., Axiotis, M., Berti, L., Fioretto, E., Kroell, T., Latina, A., Marginean, N., Maron, G., Martinez, T., Rosso, D., Rusu, C., Toniolo, N., Szilner, S., Trotta, M., Bazzacco, D., Beghini, S., Bellato, M., Brandolini, F., Farnea, E., Isocrate, R., Lenzi, S. M., Lunardi, S., Montagnoli, G., Pavan, P., Rossi, Alvarez, Scarlassara, C., Ur, F., Blasi, C., Bracco, N., Camera, A., Leoni, F., Million, S., Pignanelli, B., Pollarolo, Giovanni, Derosa, G., Inglima, A., Commara, G., Rana, M., Pierroutsakou, G., Romoli, D., Sandoli, M., Bizzeti, M., P. G., Bizzeti, Sona, A. M., Bianco, Lo, Petrache, G., C. M., Zucchiatti, Cocconi, A., Quintana, P., Beck, B., Curien, Ch, Duchene, D., Haas, G., Medina, F., Papka, P., Durell, P., Freeman, J., S. J., Smith, Varley, A., Fayz, B., Pucknell, K., Simpson, V., Gelletly, J., Regan, W., Gadea, A., Napoli, D. R., De Angelis, G., Menegazzo, R., Stefanini, A. M., Corradi, L., Axiotis, M., Berti, L., Fioretto, E., Kroell, T., Latina, A., Marginean, N., Maron, G., Martinez, T., Rosso, D., Rusu, C., Toniolo, N., Szilner, S., Trotta, M., Bazzacco, D., Beghini, S., Bellato, M., Brandolini, F., Farnea, E., Isocrate, R., Lenzi, S. M., Lunardi, S., Montagnoli, G., Pavan, P., Alvarez, C. Rossi, Scarlassara, F., Ur, C., Blasi, N., Bracco, A., Camera, F., Leoni, S., Million, B., Pignanelli, M., Pollarolo, G., Derosa, A., Inglima, G., LA COMMARA, Marco, LA RANA, Giovanni, Pierroutsakou, D., Romoli, M., Sandoli, M., Bizzeti, P. G., Bizzeti Sona, A. M., Lo Bianco, G., Petrache, C. M., Zucchiatti, A., Cocconi, P., Quintana, B., Beck, C. h., Curien, D., Duchêne, G., Haas, F., Medina, P., Papka, P., Durell, J., Freeman, S. J., Smith, A., Varley, B., Fayz, K., Pucknell, V., Simpson, J., Gelletly, W., and Regan, P.

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Detector, heavy-ion reactions, high-spin states, gamma, spectroscopy, Particle detector, Semiconductor detector, Nuclear fusion, Physics::Accelerator Physics, Neutron, Gamma spectroscopy, Atomic physics, Nuclear Experiment
Abstract

Following the commissioning of the PRISMA large-acceptance spectrometer, installed at the Laboratori Nazionali di Legnaro (LNL), an international nuclear-structure collaboration has started to develop a large $\gamma$ -ray setup to be installed in the target position of the spectrometer. The array is based on the EUROBALL composite CLOVER detectors. In this contribution the CLOVER detector array is described and its expected performance figures discussed. This new setup, by using the high-intensity heavy-ion beams provided by the LNL ALPI linac, will push the study of nuclear structure towards moderately neutron-rich nuclei by means of quasi-elastic and deep inelastic reactions.

260. Coherent contributions to isospin mixing in the mirror pair 67As and 67Se.

Author

Orlandi R, de Angelis G, Bizzeti PG, Lunardi S, Gadea A, Bizzeti-Sona AM, Bracco A, Brandolini F, Carpenter MP, Chiara CJ, Della Vedova F, Farnea E, Greene JP, Lenzi SM, Leoni S, Lister CJ, Mărginean N, Mengoni D, Napoli DR, Singh BS, Pechenaya OL, Recchia F, Reviol W, Sahin E, Sarantites DG, Seweryniak D, Tonev D, Ur CA, Valiente-Dobón JJ, Wadsworth R, Wiedemann KT, and Zhu S

Abstract

Isospin symmetry breaking has been investigated in mass A=67 mirror nuclei through the experimental determination of the E1 strengths of analog electromagnetic transitions. Lifetimes of excited states have been measured in (67)Se and (67)As with the centroid shift method. Through the comparison of the B(E1) strengths of the mirror 9/2(+)-->7/2(-) transitions, the isovector and the isoscalar components of the electromagnetic transition amplitude were extracted. The presence of a large isoscalar component provides evidence for coherent contributions to isospin mixing, probably involving the isovector giant monopole resonance.

Published
2009
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261. Lifetime measurements of the neutron-rich N = 30 isotones 50Ca and 51Sc: orbital dependence of effective charges in the fp shell.

Author

Valiente-Dobón JJ, Mengoni D, Gadea A, Farnea E, Lenzi SM, Lunardi S, Dewald A, Pissulla T, Szilner S, Broda R, Recchia F, Algora A, Angus L, Bazzacco D, Benzoni G, Bizzeti PG, Bizzeti-Sona AM, Boutachkov P, Corradi L, Crespi F, de Angelis G, Fioretto E, Görgen A, Gorska M, Gottardo A, Grodner E, Guiot B, Howard A, Królas W, Leoni S, Mason P, Menegazzo R, Montanari D, Montagnoli G, Napoli DR, Obertelli A, Pawłat T, Pollarolo G, Rubio B, Sahin E, Scarlassara F, Silvestri R, Stefanini AM, Smith JF, Steppenbeck D, Ur CA, Wady PT, Wrzesiński J, Maglione E, and Hamamoto I

Abstract

The lifetimes of the first excited states of the N = 30 isotones (50)Ca and (51)Sc have been determined using the Recoil Distance Doppler Shift method in combination with the CLARA-PRISMA spectrometers. This is the first time such a method is applied to measure lifetimes of neutron-rich nuclei populated via a multinucleon transfer reaction. This extends the lifetime knowledge beyond the f_{7/2} shell closure and allows us to derive the effective proton and neutron charges in the fp shell near the doubly magic nucleus (48)Ca, using large-scale, shell-model calculations. These results indicate an orbital dependence of the core polarization along the fp shell.

Published
2009
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262. Coulomb energy differences in t = 1 mirror rotational bands in (50)Fe and (50)Cr.

Author

Lenzi SM, Mărginean N, Napoli DR, Ur CA, Zuker AP, de Angelis G, Algora A, Axiotis M, Bazzacco D, Belcari N, Bentley MA, Bizzeti PG, Bizzeti-Sona A, Brandolini F, von Brentano P, Bucurescu D, Cameron JA, Chandler C, De Poli M, Dewald A, Eberth H, Farnea E, Gadea A, Garces-Narro J, Gelletly W, Grawe H, Isocrate R, Joss DT, Kalfas CA, Klug T, Lampman T, Lunardi S, Martínez T, Martínez-Pinedo G, Menegazzo R, Nyberg J, Podolyak Z, Poves A, Ribas RV, Rossi Alvarez C, Rubio B, Sánchez-Solano J, Spolaore P, Steinhardt T, Thelen O, Tonev D, Vitturi A, von Oertzen W, and Weiszflog M

Abstract

Gamma rays from the N = Z-2 nucleus (50)Fe have been observed, establishing the rotational ground state band up to the state J(pi) = 11+ at 6.994 MeV excitation energy. The experimental Coulomb energy differences, obtained by comparison with the isobaric analog states in its mirror (50)Cr, confirm the qualitative interpretation of the backbending patterns in terms of successive alignments of proton and neutron pairs. A quantitative agreement with experiment has been achieved by exact shell model calculations, incorporating the differences in radii along the yrast bands, and properly renormalizing the Coulomb matrix elements in the pf model space.

Published
2001
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