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1. AGATA modules as Compton polarimeters for the measurement of gamma-ray linear polarisation

Author

Melon B., Bizzeti P. G., Sona P., Michelagnoli C., Bazzacco D., Farnea E., Bizzeti–Sona A. M., de Angelis G., Gadea A., Gottardo A., Lunardi S., Lenzi S. M., Menegazzo R., Mengoni D., Nannini A., Napoli D. R., Perego A., Recchia F., Sahin E., Valiente–Dobon J. J., and Ur C. A.

Subjects
Physics, QC1-999
Abstract

The ability of a cluster of three segmented Ge crystals (“AGATA module”) acting as a Compton polarimeter to measure the linear polarization of gamma rays has been investigated at an energy close to 511 keV. Partially polarized gamma rays have been produced by Coulomb excitation of the first excited state of 104Pd a and 108Pd.

Published
2014
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2. Isospin Symmetry violation in mirror E1 transitions: Coherent contributions from the Giant Isovector Monopole Resonance in 67As - 67Se

Author

Bizzeti, P. G., de Angelis, G., Lenzi, S. M., and Orlandi, R.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The assumption of an exact isospin symmetry would imply equal strengths for mirror E1 transitions (at least, in the long-wavelength limit). Actually, large violations of this symmetry rule have been indicated by a number of experimental results, the last of which is the 67As - 67Se doublet investigated at GAMMASPHERE. Here, we examine in detail various possible origins of the observed asymmetry. The coherent effect of Coulomb-induced mixing with the high-lying Giant Isovector Monopole Resonance is proposed as the most probable process to produce a large asymmetry in the E1 transitions, with comparatively small effect on the other properties of the parent and daughter levels., Comment: 14 pages, 2 figures

Published
2012
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3. Response of CdWO4 crystal scintillator for few MeV ions and low energy electrons

Author

Bizzeti, P. G., Carraresi, L., Danevich, F. A., Fazzini, T., Maurenzig, P. R., Taccetti, F., Taccetti, N., and Tretyak, V. I.

Subjects
Nuclear Experiment
Abstract

The response of a CdWO4 crystal scintillator to protons, alpha particles, Li, C, O and Ti ions with energies in the range 1 - 10 MeV was measured. The non-proportionality of CdWO4 for low energy electrons (4 - 110 keV) was studied with the Compton Coincidence Technique. The energy dependence of the quenching factors for ions and the relative light yield for low energy electrons was calculated using a semi-empirical approach. Pulse-shape discrimination ability between gamma quanta, protons, alpha particles and ions was investigated., Comment: 20 pages, 8 figs, accepted in Nucl. Instrum. Meth. A

Published
2012
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4. AGATA - Advanced Gamma Tracking Array

Author

Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., de Angelis, G., Arnold, L., Astier, A., Ataç, A., Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu, G., Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Bianco, G. Lo, Birkenbach, B., Bizzeti, P. G., Bizzeti-Sona, A. M., Blanc, F. Le, Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, A., Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Bürger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrió, F., Casati, G., Castoldi, M., Cederwall, B., Cercus, J. -L., Chambert, V., Chambit, M. El, Chapman, R., Charles, L., Chavas, J., Clément, E., Cocconi, P., Coelli, S., Coleman-Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Désesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo-Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Ertürk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, Ch., de France, G., Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhäuser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., González, V., Gottardo, A., Grave, X., Grȩbosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Görgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernández-Prieto, A., Hervieu, B., Hess, H., Hüyük, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Kaşkaş, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kröll, Th., Krücken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez-Martens, A., Lotodé, A., Lunardi, S., Maj, A., van der Marel, J., Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Mȩczyński, W., Mendéz, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, R., Morrall, P. S., Möller, O., Nannini, A., Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Noa, Y. Le, Nolan, P. J., Norman, M., Nyberg, J., Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Özben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Pouhalec, P. Le, Pouthas, J., Pugnére, D., Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., La Rana, G., Rebeschini, M., Recchia, F., Redon, N., Reese, M., Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A. P., Robin, J., Roccaz, J., Ropert, J. -A., Rossé, B., Alvarez, C. Rossi, Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Şahin, E., Salomon, F., Salsac, M. -D., Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Şenyiğit, M., Sigward, M. -H., Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stézowski, O., Strachan, J., Suliman, G., Söderström, P. -A., Tain, J. L., Tanguy, S., Tashenov, S., Theisen, Ch., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun-Lanoë, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente-Dobon, J. J., Vandone, V., Vardaci, E., Venturelli, R., Veronese, F., Veyssiere, Ch., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens, A., Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Ziȩbliński, M., and Zucchiatti, A.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realization of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly-segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterization of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximize its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer., Comment: This version contains a correction of a typing error in the caption of Fig. 2. The DOI to the article published in Nucl. Instr. Meth A was also added

Published
2011
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5. Transition probabilities in the X(5) candidate $^{122}$Ba

Author

Bizzeti, P. G., Bizzeti-Sona, A. M., Tonev, D., Giannatiempo, A., Ur, C. A., Dewald, A., Melon, B., Michelagnoli, C., Petkov, P., Bazzacco, D., Costin, A., de Angelis, G., Della Vedova, F., Fantuzi, M., Farnea, E., Fransen, C., Gadea, A., Lenzi, S., Lunardi, S., Marginean, N., Marginean, R., Menegazzo, R., Mengoni, D., Moeller, O., Nannini, A., Napoli, D. R., Nespolo, M., Pavan, P., Perego, A., Petrache, C. M., Pietralla, N., Alvarez, C. Rossi, and Sona, P.

Subjects
Nuclear Experiment
Abstract

To investigate the possible X(5) character of 122Ba, suggested by the ground state band energy pattern, the lifetimes of the lowest yrast states of 122Ba have been measured, via the Recoil Distance Doppler-Shift method. The relevant levels have been populated by using the 108Cd(16O,2n)122Ba and the 112Sn(13C,3n)122Ba reactions. The B(E2) values deduced in the present work are compared to the predictions of the X(5) model and to calculations performed in the framework of the IBA-1 and IBA-2 models.

Published
2010
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6. Description of nuclear octupole and quadrupole deformation close to the axial symmetry: Octupole vibrations in the X(5) nuclei 150Nd and 152Sm

Author

Bizzeti, P. G. and Bizzeti-Sona, A. M.

Subjects
Nuclear Theory
Abstract

The model, introduced in a previous paper, for the description of the octupole and quadrupole degrees of freedom in conditions close to the axial symmetry, is used to describe the negative-parity band based on the first octupole vibrational state in nuclei close to the critical point of the U(5) to SU(3) phase transition. The situation of 150Nd and 152Sm is discussed in detail. The positive parity levels of these nuclei, and also the in-band E2 transitions, are reasonably accounted for by the X(5) model. With simple assumptions on the nature of the octupole vibrations, it is possible to describe, with comparable accuracy, also the negative parity sector, without changing the description of the positive-parity part., Comment: 8 pages, 5 figures

Published
2010
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7. Description of nuclear octupole and quadrupole deformation close to the axial symmetry: Critical-point behavior of 224Ra and 224Th

Author

Bizzeti, P. G. and Bizzeti-Sona, A. M.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The model, introduced in a previous paper, for the description of the octupole and quadrupole degrees of freedom in conditions close to the axial symmetry, is applied to situations of shape phase transitions where the quadrupole amplitude can reach zero. The transitional nuclei 224,226Ra and 224Th are discussed in the frame of this model. Their level schemes can be reasonably accounted for assuming a square-well potential in two dimensions. Electromagnetic transition amplitudes are also evaluated and compared with existing experimental data., Comment: 11 pages, 9 figures

Published
2008
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8. Pulse-shape discrimination with PbWO$_4$ crystal scintillators

Author

Bardelli, L., Bini, M., Bizzeti, P. G., Danevich, F. A., Fazzini, T. F., Kobychev, V. V., Krutyak, N., Maurenzig, P. R., Mokina, V. M., Nagorny, S. S., Pashkovskii, M., Poda, D. V., Tretyak, V. I., and Yurchenko, S. S.

Subjects
Nuclear Experiment
Abstract

The light output, $\alpha/\beta$ ratio, and pulse shape have been investigated at $-25^\circ$ C with PbWO$_4$ crystal scintillators undoped, and doped by F, Eu, Mo, Gd and S. The fast $0.01-0.06 \mu$s and middle $0.1-0.5 \mu$s components of scintillation decay were observed for all the samples. Slow components of scintillation signal with the decay times $1-3 \mu$s and $13-28 \mu$s with the total intensity up to $\approx50%$ have been recognized for several samples doped by Molybdenum. We found some indications of a pulse-shape discrimination between $\alpha$ particles and $\gamma$ quanta with PbWO$_4$ (Mo doped) crystal scintillators., Comment: 12 pages, 5 figures, submitted to NIM A

Published
2007
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9. Further study of CdWO4 crystal scintillators as detectors for high sensitivity double beta experiments: scintillation properties and pulse-shape discrimination

Author

Bardelli, L., Bini, M., Bizzeti, P. G., Carraresi, L., Danevich, F. A., Fazzini, T. F., Grinyov, B. V., Ivannikova, N. V., Kobychev, V. V., Kropivyansky, B. N., Maurenzig, P. R., Nagornaya, L. L., Nagorny, S. S., Nikolaiko, A. S., Pavlyuk, A. A., Poda, D. V., Solsky, I. M., Sopinskyy, M. V., Stenin, Yu. G., Taccetti, F., Tretyak, V. I., Vasiliev, Ya. V., and Yurchenko, S. S.

Subjects
Nuclear Experiment
Abstract

Energy resolution, light yield, non-proportionality in the scintillation response, alpha/beta ratio, pulse shape for gamma rays and alpha particles were studied with CdWO4 crystal scintillators. Some indication for a difference in the emission spectra for gamma rays and alpha particles was observed. No dependence of CdWO4 pulse shape on emission spectrum wavelengths under laser, alpha particles and gamma ray excitation was observed. Dependence of scintillation pulse shape for gamma quanta and alpha particles and pulse-shape discrimination ability on temperature was measured in the range of 0-24 degrees., Comment: 22 pages, 14 figures, submitted to NIMA

Published
2006
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10. Description of the nuclear octupole and quadrupole deformation

Author

Bizzeti, P. G. and Bizzeti-Sona, A. M.

Subjects
Nuclear Theory
Abstract

A parametrization of octupole plus quadrupole deformation, in terms of intrinsic variables defined in the rest frame of the overall tensor of inertia, is presented and discussed. The model is valid for situations close to the axial symmetry, but non axial deformation parameters are not frozen to zero. The properties of the octupole excitations in the deformed Thorium isotopes Th-226, Th-228 are interpreted in the frame of this model. A tentative interpretation of octupole oscillations in nuclei close to the X(5) symmetry, in terms of an exactly separable potential, is also discussed., Comment: 15 pages, 3 figures. XXIV International Workshop on Nuclear Theory, Rila, Bulgaria, 20-25 June, 2005. Printing errors corrected

Published
2005

11. Description of nuclear octupole and quadrupole deformation close to the axial symmetry and phase transitions in the octupole mode

Author

Bizzeti, P. G. and Bizzeti-Sona, A. M.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The dynamics of nuclear collective motion is investigated in the case of reflection-asymmetric shapes. The model is based on a new parameterization of the octupole and quadrupole degrees of freedom, valid for nuclei close to the axial symmetry. Amplitudes of oscillation in other degrees of freedom different from the axial ones are assumed to be small, but not frozen to zero. The case of nuclei which already possess a permanent quadrupole deformation is discussed in some more detail and a simple solution is obtained at the critical point of the phase transition between harmonic octupole oscillation and a permanent asymmetric shape. The results are compared with experimental data of the Thorium isotopic chain. The isotope Th-226 is found to be close to the critical point., Comment: 17 pages, 5 figures, 8 tables; 3 new references added, misprints corrected

Published
2004
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12. On the alpha activity of natural tungsten isotopes

Author

Danevich, F. A., Georgadze, A. Sh., Kobychev, V. V., Nagorny, S. S., 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
Nuclear Experiment
Abstract

The indication for the alpha decay of 180-W with a half-life T1/2=1.1+0.8-0.4(stat)+-0.3(syst)x10^18 yr has been observed for the first time with the help of the super-low background 116-CdWO_4 crystal scintillators. In conservative approach the lower limit on half-life of 180-W has been established as T1/2>0.7x10^18 yr at 90% C.L. Besides, new T1/2 bounds were set for alpha decay of 182-W, 183-W, 184-W and 186-W at the level of 10^20 yr., Comment: 16 pages, 8 figures, accepted in Phys. Rev. C

Published
2002
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13. Transition rates and nuclear structure changes in mirror nuclei 47Cr and 47V

Author

Tonev, D., Petkov, P., Dewald, A., Klug, T., von Brentano, P., Andrejtscheff, W., Lenzi, S. M., Napoli, D. R., Marginean, N., Brandolini, F., Ur, C. A., Axiotis, M., Bizzeti, P. G., and Bizzeti-Sona, A.

Subjects
Nuclear Experiment
Abstract

Lifetime measurements in the mirror nuclei 47Cr and 47V were performed by means of the Doppler-shift attenuation method using the multidetector array EUROBALL, in conjunction with the ancillary detectors ISIS and the Neutron Wall. The determined transition strengths in the yrast cascades are well described by full pf shell model calculations., Comment: Latex2e, 11 pages, 3 figures

Published
2002
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14. New results of 116Cd double beta decay study with 116CdWO4 scintillators

Author

Danevich, F. A., Georgadze, A. Sh., Kobychev, V. V., Kropivyansky, B. N., 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
Nuclear Experiment
Abstract

A new phase of 116Cd double beta decay experiment is in progress in the Solotvina Underground Laboratory. Four enriched 116CdWO4 scintillators with total mass 339 g are used in a set up, whose active shield is made of 15 natural CdWO4 crystals (20.6 kg). The background rate in the energy interval 2.5-3.2 MeV is 0.03 counts/y*kg*keV. The half-life for 2-neutrino 2-beta decay of 116Cd is measured as T{1/2}(2-neutrino) = [2.6+-0.1(stat)-0.4+0.7}(syst)]*10**19 y. The T{1/2} limits for neutrinoless 2-beta decay of 116Cd are set as T{1/2} >= 0.7(2.5)*10**23 y at 90%(68%) C.L. for transition to ground state of 116Sn, while for decays to the first 2+ and second 0+ excited levels of 116Sn as T{1/2}>=1.3(4.8)*10**22 y and >=0.7(2.4)*10**22 y with 90%(68%) C.L., respectively. For 0-neutrino 2-beta decay with emission of one or two Majorons, the limits are T{1/2}(0-neutrino M1) >=3.7(5.8)*10**21 y and T{1/2}(0-neutrino M2)>=5.9(9.4)*10**20 y at 90%(68%) C.L. Restrictions on the value of the neutrino mass, right-handed admixtures in the weak interaction, and the neutrino-Majoron coupling constant are derived as: m(neutrino)<=2.6(1.4) eV, eta <=3.9*10**-8, lambda <=3.4*10**-6, and g{M}<= 12(9.5)*10**-5 at 90%(68%) C.L., respectively., Comment: 28 pages, 9 figures (LaTeX). Phys. Rev. C (in press)

Published
2000
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16. Nuclear spectroscopy near the proton drip line in the lanthanide region: The122La nucleus

Author

Fantuzi, M., Petrache, C. M., Mengoni, D., Axiotis, M., Bazzacco, D., Benzoni, G., Bizzeti, P. G., Bizzeti-Sona, A. M., Blasi, N., Bracco, A., de Angelis, G., Farnea, E., Gadea, A., Kröll, Th., Leoni, S., Liu, H. L., Lunardi, S., Marginean, N., Menegazzo, R., Napoli, D. R., Nespolo, M., Pavan, P., Rossi Alvarez, C., Spolaore, P., Ur, C. A., Venturelli, R., and Xu, F. R.

Published
2008
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17. Octupole-deformed molecular bands in 21Ne

Author

Wheldon, C., Kokalova, Tz., von Oertzen, W., Thummerer, S., Bohlen, H. G., Gebauer, B., Tumino, A., Massey, T. N., de Angelis, G., Axiotis, M., Gadea, A., Kröll, Th., Mărginean, N., Napoli, D. R., De Poli, M., Ur, C., Bazzacco, D., Lenzi, S. M., Rossi Alvarez, C., Lunardi, S., Menegazzo, R., Bizzeti, P. G., and Bizzeti-Sona, A. M.

Published
2005
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18. A study of γ decays and octupole bands in 21Ne and 21Na

Author

Thummerer, S., von Oertzen, W., Kokalova, Tz., Bohlen, H. G., Gebauer, B., Tumino, A., Massey, T. N., de Angelis, G., Axiotis, M., Gadea, A., Kröll, Th., Marginean, N., Napoli, D. R., De Poli, M., Ur, C., Bazzacco, D., Lenzi, S. M., Rossi Alvarez, C., Lunardi, S., Menegazzo, R., Bizzeti, P. G., and Bizzeti-Sona, A. M.

Published
2003
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19. 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., 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., Rossi Alvarez, C., Scarlassara, F., Ur, C., Blasi, N., Bracco, A., Camera, F., Leoni, S., Million, B., Pignanelli, M., Pollarolo, G., DeRosa, A., Inglima, G., La Commara, M., La Rana, G., 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, Ch, Curien, D., Duchene, G., Haas, F., Medina, P., Papka, P., Durell, J., Freeman, S. J., Smith, A., Varley, B., Fayz, K., Pucknell, V., Simpson, J., Gelletly, W., Regan, P., The EUROBALL, and PRISMA-2 Collaboration

Published
2003
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21. Multiple octupole excitations in 148Gd

Author

Podolyák, Zs., Bizzeti, P. G., Bizzeti-Sona, A. M., Lunardi, S., Bazzacco, D., Dewald, A., Algora, A., de Angelis, G., De Poli, M., Farnea, E., Gadea, A., Kasemann, D. R., Klug, T., Kröll, Th., Lenzi, S., Napoli, D. R., Petrache, C. M., Peusquens, R., Rossi Alvarez, C., Martinez, T., and Ur, C. A.

Published
2000
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22. Octupole excitations in146Sm

Author

Bizzeti, P. G., Bizzeti-Sona, A. M., Bazzacco, D., Lunardi, S., Alvarez, C. Rossi, De Angelis, G., De Poli, M., Maron, G., Napoli, D. R., Dewald, A., Klemme, T., and Tiesler, H.

Published
1998
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23. Band crossing phenomena inN=Z nuclei a probe toT=0 pairing correlations?

Author

de Angelis, G., Fahlander, C., Gadea, A., Farnea, E., Gelletly, W., Aprahamian, A., Bazzacco, D., Becker, F., Bizzeti, P. G., Bizzeti-Sona, A., Brandolini, F., De Acuña, D., De Poli, M., Eberth, J., Foltescu, D., Lenzi, S. M., Lunardi, S., Martinez, T., Napoli, D. R., Pavan, P., Petrache, C. M., Rossi Alvarez, C., Rudolph, D., Rubio, B., Skoda, S., Spolaore, P., Thomas, G., Ur, C., Weiszflog, M., and Wyss, R.

Published
1997
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25. High-spin states and lifetimes in S-33 and shell-model interpretation in the sd-fp space

Author

Aydin, S., Ionescu-Bujor, M., Gavrilov, G. Tz., Dimitrov, B. I., Lenzi, S. M., Recchia, F., Tonev, D., Bouhelal, M., Kavillioglu, F., Pavlov, P., Bazzacco, D., Bizzeti, P. G., Bizzeti-Sona, A. M., de Angelis, G., Deloncle, I., Farnea, E., Gadea, A., Gottardo, A., Goutev, N., Haas, F., Huyuk, T., Laftchiev, H., Lunardi, S., Marinov, Tz. K., Mengoni, D., Menegazzo, R., Michelagnoli, C., Napoli, D. R., Petkov, P., Sahin, E., Singh, P. P., Stefanova, E. A., Ur, C. A., Valiente-Dobon, J. J., Yavahchova, M. S., Sabire Yazıcı Fen Edebiyat Fakültesi, Gadea, Andres -- 0000-0002-4233-1970, Menegazzo, Roberto -- 0000-0002-3060-5276, Huyuk, Tayfun -- 0000-0003-0597-9767, Singh, Pushpendra P -- 0000-0003-3813-4322, Napoli, Daniel R. -- 0000-0002-8154-6958, GOTTARDO, Andrea -- 0000-0002-0390-5767, Sahin, Eda -- 0000-0003-0683-5140, and [Aydin, S. -- Kavillioglu, F.] Aksaray Univ, Dept Phys, TR-68100 Aksaray, Turkey -- [Ionescu-Bujor, M.] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania -- [Gavrilov, G. Tz. -- Dimitrov, B. I. -- Tonev, D. -- Pavlov, P. -- Goutev, N. -- Laftchiev, H. -- Marinov, Tz. K. -- Petkov, P. -- Stefanova, E. A. -- Yavahchova, M. S.] BAS, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria -- [Lenzi, S. M. -- Recchia, F. -- Bazzacco, D. -- Farnea, E. -- Gottardo, A. -- Lunardi, S. -- Mengoni, D. -- Menegazzo, R. -- Michelagnoli, C. -- Ur, C. A.] Univ Padua, Dipartimento Fis & Astron, Padua, Italy -- [Lenzi, S. M. -- Recchia, F. -- Bazzacco, D. -- Farnea, E. -- Gottardo, A. -- Lunardi, S. -- Mengoni, D. -- Menegazzo, R. -- Michelagnoli, C. -- Ur, C. A.] INFN, Sezione Padova 1, Padua, Italy -- [Bouhelal, M.] Univ Tebessa, Lab Phys Appl & Theor, Tebessa, Algeria -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M.] Univ Florence, Dipartimento Fis, Florence, Italy -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M.] INFN, Sezione Firenze, Florence, Italy -- [de Angelis, G. -- Gadea, A. -- Gottardo, A. -- Napoli, D. R. -- Sahin, E. -- Valiente-Dobon, J. J.] INFN, Lab Nazionali Legnaro, I-46020 Legnaro, Italy -- [Deloncle, I.] CNRS, IN2P3, IPNO, Orsay, France -- [Deloncle, I.] Univ Paris 11, Orsay, France -- [Gadea, A. -- Huyuk, T.] Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain -- [Haas, F.] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France -- [Singh, P. P.] Indian Inst Technol Ropar, Dept Phys, Punjab 140001, India

Subjects
Nuclear and High Energy Physics
Abstract

WOS: 000407994600003, The structure of the S-33 nucleus was investigated in the Mg-24(N-14, alpha p) fusion-evaporation reaction using a 40-MeV N-14 beam. The level scheme was extended up to an excitation energy of 11.7 MeV and spin 19/2+. Lifetimes of the intermediate-and high-spin states have been investigated by the Doppler shift attenuation method. Data were compared with different shell-model calculations where effective interactions involving two main shells, the sd and the fp, are used., Bulgarian Science Fund [DN08/6]; program for support of young scientists, Bulgarian Academy of Sciences [DFNP 48], Authors are thankful to the XTU Tandem staff of Laboratori Nazionali di Legnaro for the good quality delivered beam. This research was supported by Bulgarian Science Fund under Contract No. DN08/6 and by the program for support of young scientists, Bulgarian Academy of Sciences under Contract No. DFNP 48.

Published
2017

26. In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap

Author

John, P. R., Valiente-Dobon, J. J., Mengoni, D., Modamio, V., Lunardi, S., Bazzacco, D., Gadea, A., Wheldon, C., Rodriguez, T. R., 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., Corradi, L., Crespi, F. C. L., Melon, B., Farnea, E., Fioretto, E., Gottardo, A., Grente, L., Hess, H., Kokalova, Tz., Korten, W., Kusoglu, A., Lenzi, S., Leoni, S., Ljungvall, J., Menegazzo, R., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Napoli, D. R., Podolyak, Zs., Pollarolo, G., Recchia, F., Reiter, P., Roberts, O. J., Sahin, E., Salsac, M. -D, Scarlassara, F., Sferrazza, M., Soderstrom, Pär-Anders, Stefanini, A. M., Szilner, S., Ur, C. A., Vogt, A., and Walshe, J.

Subjects
Subatomär fysik, Subatomic Physics
Abstract

The neutron-rich nucleus Pt-200 is investigated via in-beam gamma-ray spectroscopy to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction Pt-198(Se-82, Se-80)Pt-200 is used to populate excited states of Pt-200. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects gamma rays coincident with the Se-80 recoils, the binary partner of Pt-200. The binary partner method is applied to extract the gamma-ray transitions and build the level scheme of Pt-200. The level at 1884 keV reported by Yates et al. [S. W. Yates, E. M. Baum, E. A. Henry, L. G. Mann, N. Roy, A. Aprahamian, R. A. Meyer, and R. Estep, Phys. Rev. C 37, 1889 (1988)] was confirmed to be at 1882.1 keV and assigned as the (6(1)(+)) state. An additional gamma ray was found and it presumably deexcites the (8(1)(+)) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even Pt190-204 isotopes, revealing that Pt-200 marks the transition from the gamma-unstable behavior of lighter Pt nuclei towards a more spherical one when approaching the N = 126 shell closure.

Published
2017

28. High-spin states and lifetimes in S33 and shell-model interpretation in the sd−fp space

Author

Aydin, S., primary, Ionescu-Bujor, M., additional, Gavrilov, G. Tz., additional, Dimitrov, B. I., additional, Lenzi, S. M., additional, Recchia, F., additional, Tonev, D., additional, Bouhelal, M., additional, Kavillioglu, F., additional, Pavlov, P., additional, Bazzacco, D., additional, Bizzeti, P. G., additional, Bizzeti-Sona, A. M., additional, de Angelis, G., additional, Deloncle, I., additional, Farnea, E., additional, Gadea, A., additional, Gottardo, A., additional, Goutev, N., additional, Haas, F., additional, Huyuk, T., additional, Laftchiev, H., additional, Lunardi, S., additional, Marinov, Tz. K., additional, Mengoni, D., additional, Menegazzo, R., additional, Michelagnoli, C., additional, Napoli, D. R., additional, Petkov, P., additional, Sahin, E., additional, Singh, P. P., additional, Stefanova, E. A., additional, Ur, C. A., additional, Valiente-Dobón, J. J., additional, and Yavahchova, M. S., additional

Published
2017
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29. In-beam γ -ray spectroscopy of the neutron-rich platinum isotope Pt200 toward the N=126 shell gap

Author

John, P. R., primary, Valiente-Dobón, J. J., additional, Mengoni, D., additional, Modamio, V., additional, Lunardi, S., additional, Bazzacco, D., additional, Gadea, A., additional, Wheldon, C., additional, Rodríguez, T. R., additional, Alexander, T., additional, de Angelis, G., additional, Ashwood, N., additional, Barr, M., additional, Benzoni, G., additional, Birkenbach, B., additional, Bizzeti, P. G., additional, Bizzeti-Sona, A. M., additional, Bottoni, S., additional, Bowry, M., additional, Bracco, A., additional, Browne, F., additional, Bunce, M., additional, Camera, F., additional, Corradi, L., additional, Crespi, F. C. L., additional, Melon, B., additional, Farnea, E., additional, Fioretto, E., additional, Gottardo, A., additional, Grente, L., additional, Hess, H., additional, Kokalova, Tz., additional, Korten, W., additional, Kuşoğlu, A., additional, Lenzi, S., additional, Leoni, S., additional, Ljungvall, J., additional, Menegazzo, R., additional, Michelagnoli, C., additional, Mijatović, T., additional, Montagnoli, G., additional, Montanari, D., additional, Napoli, D. R., additional, Podolyák, Zs., additional, Pollarolo, G., additional, Recchia, F., additional, Reiter, P., additional, Roberts, O. J., additional, Şahin, E., additional, Salsac, M.-D., additional, Scarlassara, F., additional, Sferrazza, M., additional, Söderström, P.-A., additional, Stefanini, A. M., additional, Szilner, S., additional, Ur, C. A., additional, Vogt, A., additional, and Walshe, J., additional

Published
2017
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30. Identification of high spin states in146Dy throughγ-recoil coincidences

Author

des Angelis, G., Bazzacco, D., Beghini, S., Bizzeti-Sona, A. M., Bizzeti, P. G., Cardona, M. A., Corradi, L., Dassie, A., D'Onofrio, A., De Poli, M., Lunardi, S., Moreno, H., Müller, L., Napoli, D. R., Nardelli, G., Rico, J., Roca, V., Segato, G. F., Signorini, C., Soramel, F., Spolaore, P., Stefanini, A. M., and Terrasi, F.

Published
1992
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33. Shape evolution in the neutron-rich osmium isotopes: Prompt gamma-ray spectroscopy of Os196

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., 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., Goergen, A., Gottardo, A., Grebosz, J., Grente, L., Hess, H., Jungclaus, A., Kokalova, Tz, Korichi, A., Wolfram KORTEN, Kusoglu, A., Lenzi, S., Leoni, S., Ljungvall, J., Maron, G., Meczynski, W., Melon, B., Menegazzo, R., Michelagnoli, C., Mijatovic, T., 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, S., Theisen, Ch, Ur, C. A., and Walshe, J.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich 196Os nucleus through in-beam γ-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 γ rays were measured with the advanced gamma tracking array (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 behavior towards predominately vibrational nuclei through triaxial configurations. An almost perfect γ-unstable/triaxial rotor yrast band is predicted for 196Os which is in agreement with the experimentally measured excited states

Published
2014

34. Target thickness dependence of the Be(p,xn) neutron energy spectrum

Author

Lunardi, S., Rakopoulos, V., Lantz, M., Andersson, P., Hjalmarsson, A., Mattera, A., Pomp, S., Solders, A., Valldor Blücher, J., Gorelov, D., Penttilä, H., Rinta Antila, S., Bedogni, R., Bortot, Davide, Esposito, A., Gentile, A., Passoth, E., Prokofiev, A. V., Introini, MARIA VITTORIA, Pola, Andrea, 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, Proton, QC1-999, neutrons, Scintillator, The Svedberg Laboratory, Neutron temperature, Spectral line, spectrum, Nuclear physics, Subatomär fysik, Data acquisition, nuclear physics, Subatomic Physics, Neutron, Beam (structure), energy
Abstract

We report on the current status of the analysis of an experiment performed at The Svedberg Laboratory, with the aim of investigating the produced neutron field by Be(p,xn) converters of three different thicknesses with a 30 MeV proton beam. The neutron energy spectra were measured with the Time of Flight technique using a BC-501 liquid scintillator with good n-γ Pulse Shape Discrimination properties, while the detected events were recorded simultaneously by two Data AcQuisition systems. In this paper, we present the experimental setup, the analysis technique and some preliminary results. AlFONS

Published
2014

35. Tracking with Straw Tubes in the PANDA Experiment

Author

Lunardi, S., Bragadireanu, M., Pietreanu, D., Vasile, M. E., Idzik, M., Przyborowski, D., Kulessa, P., Pysz, K., Biernat, J., Jowzaee, S., Korcyl, G., Pałka, M., Salabura, P., Smyrski, J., Bettoni, Diego, Fioravanti, Elisa, Garzia, Isabella, Savrie', Mauro, Gianotti, P., Lucherini, V., Pace, E., Mertens, M., Ohm, H., Orfanitski, S., Ritman, J., Serdyuk, V., Wintz, P., Dobbs, S., Tomaradze, A., Boca, G. L., Costanza, S., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Spataro, 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, Particle physics, Annihilation, Physics::Instrumentation and Detectors, QC1-999, Tracking (particle physics), Particle identification, Particle detector, Nuclear physics, Antiproton, Facility for Antiproton and Ion Research, Straw tracker, ddc:530, High Energy Physics::Experiment, Nuclear Experiment, Storage ring
Abstract

The PANDA spectrometer will be built at the FAIR facility at Darmstadt (Ger- many) to perform accurate tests of the strong interaction through ¯ pp andannihilation studies. The charged particle tracking at PANDA will be done using both solid state and gaseous detectors. Among the latter, two straw tube detector systems will be built (1). The cylindrical, central straw tube tracker features a high spatial and momentum resolu- tion for a wide range of particle momenta from about 8 GeV/c down to a few 100 MeV/c, together with particle identification in the momentum region below about 1 GeV/c by measuring the specific energy-loss. A new technique, based on self-supporting straw double layers with intrinsic wire tension developed for the COSY-TOF straw tracker (2), has been adopted for the PANDA trackers. The development of the readout electronics for the straw tubes is ongoing. Prototypes have been produced and used to instrument straw tube modules that have been tested with cosmic rays and proton beams. Design issues of the PANDA straw tubes, together with the results of the prototype tests are presented. The PANDA experiment (3) is one of four experiments planned for the future Facility for Antiproton and Ion Research (FAIR) (4) in Darmstadt, Germany. The scientific program of the PANDA Collaboration is oriented towards precise studies of strong interaction in the QCD transi- tion region between asymptotically free quarks and hadronic matter. The maximum available center of mass total energy in the PANDA experiment ( √ s= 5.46 GeV/c 2 ) will allow hadronic structures involving the charm quark degrees of freedom to be investigated. The PANDA detector will be in- stalled around the internal target of the High Energy Storage Ring (HESR), which will accumulate, accelerate and cool up to 10 11 antiprotons. In the experiment, the annihilation of antiprotons with

Published
2014
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36. Shape evolution in the neutron-rich osmium isotopes: Prompt γ-ray spectroscopy of Os 196

Author

John, P. R., Modamio, V., Valiente Dobón, J. J., Mengoni, D., Lunardi, S., Rodríguez, 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., Désesquelles, P., Eberth, J., Farnea, E., Fioretto, E., Görgen, A., Gottardo, A., Grebosz, J., Grente, L., Hess, H., Jungclaus, A., Kokalova, T. z., Korichi, A., Korten, W., Kuşoğlu, A., Lenzi, S., Leoni, S., Ljungvall, J., Maron, G., Meczynski, W., Melon, B., Menegazzo, R., Michelagnoli, C., Mijatović, T., Million, B., Molini, P., Montagnoli, G., Montanari, D., Napoli, D. R., Nolan, P., Oziol, C. h., Podolyák, Z. s., Pollarolo, Giovanni, Pullia, A., Quintana, B., Recchia, F., Reiter, P., Roberts, O. J., Rosso, D., Şahin, E., Salsac, M. D., Scarlassara, F., Sferrazza, M., Simpson, J., Söderström, P. A., Stefanini, A. M., Stezowski, O., Szilner, S., Theisen, C. h., C. A., Ur, and Walshe, J.

Published
2014

46. Nuclear lattice simulations: Status and perspectives

Author

Lunardi, S., Valiente-Dobon, J. J., Meissner, Ulf-G., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., and Signorini, C.

Subjects
Nuclear Theory, QC1-999, High Energy Physics::Lattice, FOS: Physical sciences, 01 natural sciences, Nuclear Theory (nucl-th), High Energy Physics - Lattice, High Energy Physics - Phenomenology (hep-ph), Lattice (order), 0103 physical sciences, Effective field theory, Astrophysics::Solar and Stellar Astrophysics, ddc:530, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Nuclear theory, Physics, Condensed matter physics, 010308 nuclear & particles physics, High Energy Physics - Lattice (hep-lat), High Energy Physics - Phenomenology, Astrophysics::Earth and Planetary Astrophysics
Abstract

I review the present status of nuclear lattice simulations. This talk is dedicated to the memory of Gerald E. Brown., Comment: Plenary talk sponsored by The European Physical Journal A -- Hadrons and Nuclei, INPC 2013, Florence, Italy, 8 pages, 3 figures, uses webofc.cls

Published
2013
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47. The ASY-EOS experiment at GSI: Investigating the symmetry energy at supra-saturation densities

Author

Lunardi, S., Russotto, P., Chartier, M., Cozma, M. D., De Filippo, E., Le Fèvre, A., Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Li, Q., Łukasik, J., Marini, P., Pawłowski, P., Santoro, S., Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al Ajlan, A., Al Garawi, M., Al Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Bassini, R., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Czech, B., Di Toro, M., Famiano, M., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, Riccardo, Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Lombardo, I., Lynch, W. G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, S., Pleskac, R., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente Dobon, J. 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), Russotto, P., Chartier, M., Filippo, E., Fèvre, A., Gannon, S., Gaparić, I., Ki, M., Kupny, S., Leifels, Y., Lemmon, R., Ukasik, J., Marini, P., Pagano, A., Pawowski, P., Santoro, S, Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Cozma, D., Czech, B., Toro, M., Famiano, M., Geraci, E., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W., Matthews, Z., May, L., Minniti, T., Mostazo, M., Papa, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., B.A.Li and J.B.Natowitz, P., Russotto, M., Chartier, E., De Filippo, A., Le Fevre, S., Gannon, A., Ga??spari??, M., Ki??, S., Kupny, Y., Leifel, R., Lemmon, J., Lukasik, P., Marini, A., Pagano, P., Pawlowski, S., Santoro, W., Trautmann, M., Veselsky, L., Acosta, M., Adamczyk, A., Al Ajlan, M., Al Garawi, S., Al Homaidhi, F., Amorini, L., Auditore, T., Aumann, Y., Ayyad, V., Baran, Z., Basrak, J., Benlliure, C., Boiano, C., Boisjoli, K., Boretzky, J., Brzychczyk, A., Budzanowski, G., Cardella, P., Cammarata, Z., Chajecki, A., Chbihi, M., Colonna, B., Czech, M., Di Toro, M., Famiano, E., Geraci, L., Grassi, V., Greco, C., Guazzoni, P., Guazzoni, M., Heil, L., Heilborn, R., Introzzi, T., Isobe, K., Kezzar, A., Krasznahorskay, N., Kurz, E., La Guidara, G., Lanzalone, P., Lasko, Q., Li, I., Lombardo, W. G., Lynch, Z., Matthew, L., May, T., Minniti, M., Mostazo, M., Papa, S., Pirrone, G., Politi, F., Porto, R., Reifarth, W., Reisdorf, F., Riccio, F., Rizzo, Rosato, Elio, D., Rossi, H., Simon, I., Skwirczynska, Z., Sosin, A., Trifirò, M., Trimarchi, M. B., Tsang, G., Verde, Vigilante, Mariano, A., Wieloch, P., Wigg, H. H., Wolter, P., Wu, S., Yennello, P., Zambon, L., Zetta, M., Zoric, Cozma, M., De Filippo, E., Le Fèvre, A., Gašparić, I., Kiš, M., Łukasik, J., Pawłowski, P., Santoro, S., Bassini, R., Di Toro, M., La Guidara, E., and Pleskac, R.

Subjects
Particle physics, History, QC1-999, Nuclear Theory, FOS: Physical sciences, and isobaric spin 24.10.Pa Thermal and statistical models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Education, Nuclear physics, Physics and Astronomy (all), nuclear physics, heavy-ions, symmetry energy, Au+Au collisions, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, ComputingMilieux_MISCELLANEOUS, Physics, sezele, Order (ring theory), Nuclear equation of state, Observable, 21.65.-f Nuclear matter 27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219 24.60.-k Statistical theory and fluctuations 25.75.Gz Particle correlations and fluctuations 21.10.Hw Spin, Symmetry (physics), Term (time), Computer Science Applications, parity, Nuclear reactions, Saturation (chemistry), Nucleon, Energy (signal processing)
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011., Comment: Talk given by P. Russotto at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

Published
2013
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