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1. 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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2. Nuclear level density from beta decay measurements: The Gamow—Teller resonance as a lens to study nuclear properties

Author

German Euroball Collaboration, Algora, A., Rubio, B., Tain, J. L., Cano-Ott, D., Agramunt, J., Batist, L., Collatz, R., Gadea, A., Gerl, J., Gierlik, M., Górska, M., Grawe, H., Hellström, M., Hu, Z., Janas, Z., Karny, M., Kirchner, R., Plochocki, A., Rejmund, M., Roeckl, E., Rykaczewski, K., Shibata, M., Szerypo, J., Äystö, Juha, editor, Dendooven, Peter, editor, Jokinen, Ari, editor, and Leino, Matti, editor

Published
2003
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3. β decay of $^{129}$Cd and excited states in $^{129}$In

Author

Taprogge, J., Jungclaus, A., Baba, H., Browne, F., Fukuda, N., Gernhäuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Grawe, H., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Nishimura, S., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Doornenbal, P., Covello, A., Daugas, J.-M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Lorusso, G., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., Wendt, A., Simpson, G. S., RIKEN, EUROBALL, PreSpec Collaboration, Söderström, P.-A., Sumikama, T., and Xu, Z. Y.

Subjects
ddc:530
Published
2015

4. Lifetime measurements of the first $2^+$ states in $^{104,106}$Zr: Evolution of ground-state deformations

Author

Browne, F., Bruce, A. M., Patel, Z., Rice, S., Sinclair, L., Wu, J., Xu, Z. Y., Yagi, A., Baba, H., Chiga, N., Carroll, R., Didierjean, F., Sumikama, T., Fang, Y., Fukuda, N., Gey, G., Ideguchi, E., Inabe, N., Isobe, T., Kameda, D., Kojouharov, I., Kurz, N., Kubo, T., Nishizuka, I., Lalkovski, S., Li, Z., Lozeva, R., Nishibata, H., Odahara, A., Podolyák, Zs., Regan, P. H., Roberts, O. J., Sakurai, H., Schaffner, H., Nishimura, S., Simpson, G. S., Suzuki, H., Takeda, H., Tanaka, M., Taprogge, J., Werner, V., Wieland, O., EUROBALL, PreSpec Collaboration, Doornenbal, P., Lorusso, G., Söderström, P.-A., Watanabe, H., and Daido, R.

Subjects
ddc:530
Published
2015

5. Coupling a CLOVER detector array withth e PRISMA magneticspectrometer

Author

A. Gadea, D. R. Napoli, G. de Angelis, R. Menegazzo, A. M. Stefanini, L. Corradi, M. Axiotis, L. Berti, E. Fioretto, T. Kroell, A. Latina, N. Marginean, G. Maron, T. Martinez, D. Rosso, C. Ru su, N. Toniolo, S. Szilner, M. Trotta, D. Bazzacco, S. Beghini, M. Bellato, F. Brandolini, E. Farnea, R. Isocrate, S. M. Lenzi, S. Lunardi, G. Montagnoli, P. Pavan, C. Rossi Alvarez, F. Scarlassara, C. Ur, N. Blasi, A. Bracco, F. Camera, S. Leoni, B. Million, M. Pignanelli, G. Pollarolo, G. Inglima, M. La Commara, D. Pierroutsakou, M. Romoli, M. Sandoli, P. G. Bizzeti, A. M. Bizzeti Sona, G. Lo Bianco, C. M. Petrache, A. Zucchiatti, P. Cocconi, B. Quintana, C.h. Beck, D. Cu rien, G. Du chˆene, F. Haas, P. Medina, P. Papka, J. Du rell, S. J. Freeman, A. Smith, B. Varley, K. Fayz, V. Pucknell, J. Simpson, W. Gelletly, P. Regan, the EUROBALL, PRISMA 2 Collaborations, DE ROSA, ANTONIO, LA RANA, GIOVANNI, A., Gadea, D. R., Napoli, G., de Angeli, R., Menegazzo, A. M., Stefanini, L., Corradi, M., Axioti, L., Berti, E., Fioretto, T., Kroell, A., Latina, N., Marginean, G., Maron, T., Martinez, D., Rosso, C., Ru su, N., Toniolo, S., Szilner, M., Trotta, D., Bazzacco, S., Beghini, M., Bellato, F., Brandolini, E., Farnea, R., Isocrate, S. M., Lenzi, S., Lunardi, G., Montagnoli, P., Pavan, C., Rossi Alvarez, F., Scarlassara, C., Ur, N., Blasi, A., Bracco, F., Camera, S., Leoni, B., Million, M., Pignanelli, G., Pollarolo, DE ROSA, Antonio, G., Inglima, M., La Commara, LA RANA, Giovanni, D., Pierroutsakou, M., Romoli, M., Sandoli, P. G., Bizzeti, A. M., Bizzeti Sona, G., Lo Bianco, C. M., Petrache, A., Zucchiatti, P., Cocconi, B., Quintana, Beck, C. h., D., Cu rien, G., Du chˆene, F., Haa, P., Medina, P., Papka, J., Du rell, S. J., Freeman, A., Smith, B., Varley, K., Fayz, V., Pucknell, J., Simpson, W., Gelletly, P., Regan, The, Euroball, and Prisma, 2 Collaborations

Subjects
X- and γ-ray spectroscopy, Solid-state detector
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 γ-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 heavyion 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.

Published
2004

6. The GT resonance revealed in beta+-decay using new experimental techniques

Author

Agramunt, J., Algora, A., Cano-Ott, D., Andres Gadea, Rubio, B., Tain, J. L., Gierlik, M., Karny, M., Janas, Z., Piochocki, A., Rykaczewski, K., Szerypo, J., Collatz, R., Gerl, J., Gorska, M., Grawe, H., Hellstrom, M., Hu, Z., Kirchner, R., Rejmund, M., Roeckl, E., Shibata, M., Batist, L., Moroz, F., Wittmann, V., Kleinheinz, P., and Euroball Collaboration, G. S. I.

7. Observation of the GT resonance in the beta(+)-decay of Ho-150 2(-)

Author

Agramunt, J., Algora, A., Batist, L., Borcea, R., Cano-Ott, D., Collatz, R., Gadea, A., Gerl, J., Gierlik, M., Gorska, M., Guilbaud, O., Grawe, H., Hellstrom, M., Hu, Z., Janas, Z., Karny, M., Kirchner, R., Kleinheinz, P., Liu, W., Martinez, T., Moroz, F., Plochocki, A., Rejmund, M., Roeckl, E., Rubio, B., Rykaczewski, K., Shibata, M., Szerypo, J., Jose L. Tain, Wittmann, V., and German Euroball, Col

8. Rare ISotopes INvestigation at GSI (RISING) using gamma-ray spectroscopy at relativistic energies

Author

H. Weick, A. Brünle, W. Me¸czyński, Claes Fahlander, G. Benzoni, H. Schaffner, J. Devin, P. Reiter, T. Saito, V. F. E. Pucknell, Oliver Wieland, R. Bassini, J. Gerl, C. Boiano, W. Prokopowicz, J. Leske, J. Gre¸bosz, F. Becker, T. Beck, Margareta Hellström, S.K. Mandal, R Lozeva, D. Curien, J. Simpson, I.H. Lazarus, H. J. Wollersheim, P. Bednarczyk, G Hammond, I. Kojouharov, P. J. Nolan, M. Zie¸bliński, H. Grawe, N. Kurz, A. Bracco, D. Seddon, Gerda Neyens, H. Hübel, C. Wheldon, U. Bonnes, P. A. Butler, M. Górska, P. Doornenbal, K. Burkard, S. Brambilla, D. E. Appelbe, F. Camera, J. Li, Dirk Rudolph, Khalid Fayz, M. Kmiecik, S. Muralithar, K.-H. Speidel, K. Sümmerer, R. Kulessa, Manfred Mutterer, Hans Geissel, M. Winkler, J. Jolie, A. Banu, N. Warr, K.-H. Behr, Benedicte Million, R. Griffiths, A. Bürger, M. A. Bentley, G. Münzenberg, J. Styczen, A. Maj, Norio Saito, J.V. Kalben, Johan Nyberg, J. Hoffmann, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Fission, Nuclear Theory, Projectile excitation, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 13.40.Hq, 13.40.-f, 25.60.-t, 25.70.Mn, 25.75.-q, 29.30.Kv, 01 natural sciences, Nuclear physics, 0103 physical sciences, Fragmentation reaction, Gamma spectroscopy, Nuclear Experiment, 010306 general physics, Spectroscopy, Instrumentation, $\gamma$-ray spectroscopy, Physics, 010308 nuclear & particles physics, Projectile, Gamma ray, Nuclear structure, Electromagnetic interaction, Relativistic heavy-ion beams, Physics::Accelerator Physics, Atomic physics, Radioactive beams
Abstract

The Rare ISotopes INvestigation at GSI project combines the former EUROBALL Ge-Cluster detectors, the MINIBALL Ge detectors, BaF2--HECTOR detectors, and the fragment separator at GSI for high-resolution in-beam gamma-ray spectroscopy measurements with radioactive beams. These secondary beams produced at relativistic energies are used for Coulomb excitation or secondary fragmentation experiments in order to explore the nuclear structure of the projectiles or projectile like nuclei by measuring de-excitation photons. The newly designed detector array is described and the performance characteristics are given. Moreover, particularities of the experimental technique are discussed.

Published
2005

9. Observation of negative-parity high-spin states of 68As

Author

E. A. Stefanova, A. Jungclaus, Ronald Schwengner, Dirk Weisshaar, I. Stefanescu, Ramon Wyss, J. Eberth, G. Gersch, N. Warr, K. P. Lieb, T. Steinhardt, E. Farnea, D. Curien, A. Gadea, G. de Angelis, T. Martinez, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
Physics, Nuclear and High Energy Physics, 23.20.Lv - γ transitions and level energies. 21.60.-n - Nuclear structure models and methods, Spin states, 010308 nuclear & particles physics, Hadron, Gamma ray, Parity (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Charged particle, Nuclear physics, medicine.anatomical_structure, 0103 physical sciences, medicine, Nuclear fusion, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleus
Abstract

The neutron-deficient nucleus 68As was populated at high spin in two experiments using the reaction 40Ca(32S, 3pn) at beam energies of 105 and 95 MeV. A self-supporting and a gold-backed, highly enriched 40Ca target were used. Gamma rays were detected with the EUROBALL array, combined with the charged-particle detector array EUCLIDES and the Neutron Wall. The 68As level scheme was considerably extended, especially at negative parity and many previous spin-parity assignments were confirmed or rejected. The total-Routhian-surface (TRS) calculations find shape coexistence and γ softness for the negative- and positive-parity states, respectively.

Published
2005

10. Investigation of lifetimes in quadrupole bands of $^{142}$Gd

Author

W. Urban, R. Menegazzo, A. Dewald, Ch. Droste, D. R. Napoli, E. O. Lieder, V.M. Mikhajlov, G. Duchêne, A.D. Efimov, B. G. Carlsson, A. Gadea, A. A. Pasternak, T. Rzaca-Urban, R. M. Lieder, S. Chmel, Ingemar Ragnarsson, S. Lunardi, G. de Angelis, T. Morek, Ts. Venkova, W. Gast, D. Bazzacco, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Publica

Subjects
lifetime, Physics, Nuclear and High Energy Physics, properties of nuclei, Spectrometer, 010308 nuclear & particles physics, Attenuation, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nuclear energy level, collective level, 01 natural sciences, width, 0103 physical sciences, Quadrupole, 21.10.-k - 21.10.Re - 21.10.Tg - 27.60.+j, Atomic physics, 010306 general physics, Beam energy, Principal axis theorem, Boson
Abstract

For a level scheme investigation of ^{142}Gd an experiment with the $\gamma$-spectrometer EUROBALLIII has been carried out and lifetimes have been measured with EUROBALL IV using the Doppler-shift attenuation method. The high-spin states have been populated in these experiments by means of the ^{99}Ru(^{48}Ti, 2p3n) reaction at a beam energy of 240MeV and the ^{114}Sn(^{32}S, 2p2n) reaction at 160MeV, respectively. Reduced E2 transition probabilities B(E2) were determined for 15 members of four quadrupole bands. For the interpretation of the positive-parity even-spin quadrupole bands, calculations in the cranked Nilsson-Strutinsky as well as interacting boson models have been performed. From the former calculations it was concluded that the high-spin states of the (+ , 0)_{1} band in ^{142}Gd represent a triaxial nucleus rotating around the longest principal axis.

Published
2008

11. Lifetime Measurements in $^{134}$Pr and Chirality in Nuclei

Author

Slobodan Brant, D. Bazzacco, P. Pejovic, P. Petkov, Jing-ye Zhang, A. Gadea, S. Lunardi, K. O. Zell, D. Curien, G. de Angelis, P. Bednarczyk, Y. H. Zhang, A. Fitzler, D. Tonev, A. Dewald, D. R. Napoli, D. L. Balabanski, N. Marginean, Q. Zhong, O. Möller, C. M. Petrache, S. Frauendorf, S. M. Lenzi, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Attenuation, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Coincidence, Recoil, 0103 physical sciences, Quasiparticle, Atomic physics, 010306 general physics, Nuclear Experiment, Boson
Abstract

Lifetimes of exited states in 134 Pr were measured be means of the recoil distance Doppler-shift and Doppler-shift attenuation techniques. The experiments were performed at IReS, Strasbourg using the EUROBALL IV spectrometer, in conjunction with the inner BGO ball and the Cologne coincidence plunger apparatus. Exited states in 134 Pr were populated in the fusion-evaporation reaction 119 Sn (19 F , 4 n )134 Pr . Reduced transition probabilities in 134 Pr are compared to the predictions of the two quasiparticle+triaxial rotor and interacting boson fermion-fermion models. The experimental results do not support the presence of static chirality in 134 Pr underlying the importance of shape fluctuations. Only within a dynamical context the presence of intrinsic chirality in 134 Pr can be supported.

Published
2006

12. Experimental Sign of a Weakening of the N=50 Spherical Shell Gap

Author

D. Curien, O. Stezowski, F. Khalfallah, F. Azaiez, Ts. Venkova, A. Prévost, O. Dorvaux, Matthias Meyer, I. Deloncle, M. Rousseau, A. Astier, I. Piqueras, N. Redon, G. Duchêne, R. Lucas, A. A. Bogachev, B. J. P. Gall, M. G. Porquet, A. Buta, 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), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), S.V. Harissopulos, P. Demetriou, E. Julin, EUROBALL, 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 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
Oxygen-18, Fission, Chemistry, Nuclear Theory, Nuclear shell model, Shell (structure), 020206 networking & telecommunications, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Spherical shell, nuclei with mass number 59 to 89, 21.60.Cs, 27.50.+e, 25.70.Jj, 25.85.Ge, nuclear shell model, heavy ion fusion reactions, 0202 electrical engineering, electronic engineering, information engineering, fission, 020201 artificial intelligence & image processing, Neutron, Atomic physics, selenium, Nuclear Experiment, Excitation, Sign (mathematics)
Abstract

High-spin states of $^{84}$Se, produced as a fission fragment in the fusion-fission reaction $^{18}O+^{208}$Pb, have been identified for the first time thanks to the EUROBALL IV array. The excitation energies of three of these states, interpreted as being due to the ($\nu g_9/2^-1 \nu d_5/2^+1 $) neutron-core excitation, give new insights about the evolution of the N=50 shell gap at the vicinity of $^{78}$Ni.

Published
2006

13. Study of binary reaction channels in the $^{24}$Mg + $^{12}$C collision

Author

Zafra, A. Sanchez I., Beck, C., Haas, F., Papka, P., Rauch, V., Marc Rousseau, Azaiez, F., Bednarczyk, P., Sandrine Courtin, Curien, D., Dorvaux, O., Nourreddine, A., Robin, J., Salsac, M. D., Oertzen, W., Kokalova, T., Thummerer, S., Wheldon, C., Angelis, G., Gadea, A., Lenzi, S., Napoli, D. R., Szilner, S., Catford, W. N., Jenkins, D., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

The study of $\gamma$-decays in $^{24}$Mg$^{*}$ is presented for excitation energies between the $\alpha$+$^{20}$Ne (9.3 MeV) and $^{12}$C+$^{12}$C (13.9 MeV) thresholds, where molecular resonances have been observed in $^{12}$C+$^{12}$C collisions. Various theoretical predictions exist for the occurence of superdeformed and hyperdeformed bands which can partially be identified with known resonance structures correlated in several reaction channels, and for which low spin members are predicted within the measured $^{24}$Mg$^{*}$ excitation energy region. The inverse kinematics reaction $^{24}$Mg$+^{12}$C has been investigated at E$_{lab}$($^{24}$Mg) = 130 MeV, an energy which enable the population of $^{24}$Mg states decaying into $^{12}$C+$^{12}$C resonant breakup states. Exclusive data were collected with the Binary Reaction Spetrometer (BRS) in coincidence with EUROBALL installed at the VIVITRON Tandem facility of the IReS at Strasbourg. Specific structures with large deformation were selectively populated in binary reactions and their $\gamma$-decays determined by using the BRS as a master trigger. Coincident events with inelastic as well as with binary $\alpha$-transfer channels have been selected by choosing the excitation energy or the entry point via the two-body Q-values. The analysis of the binary and quasi-binary reaction channels is presented with a particular emphasis on the $^{24}$Mg-$\gamma$ and $^{20}$Ne-$\gamma$ coincidences as well as the $^{12}$C-$^{12}$C coincidences.

Published
2005

14. Highest spin discrete levels in $^{131,132}Ce$: Spin generation near the mesoscopic limit

Author

Paul, E.S., Choy, P.T.W., Andreoiu, C., Boston, A.J., Evans, A.O., Fox, C., Gros, S., Nolan, P.J., Rainovski, G., Sampson, J.A., Scraggs, H.C., Walker, A., Appelbe, D.E., Joss, D.T., Simpson, J., Gizon, J., Astier, A., Buforn, N., Prévost, A., Redon, N., Stézowski, O., Nyakó, B.M., Sohler, D., Timár, J., Zolnai, L., Bazzacco, D., Lunardi, S., Petrache, C.M., Bednarczyk, P., Curien, D., Kintz, N., Ragnarsson, I., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), 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), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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
nuclei with mass number 90 to 149, nuclear optical model, nuclear spin, high spin states, nuclear shell model, nuclear superdeformed states, nuclear energy level transitions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 27.60.+j, 23.20.Lv, 21.10.Re, nuclear cranking model
Abstract

Matière Nucléaire; The three superdeformed (SD) bands in $^{132}Ce$ and the two SD bands in $^{131}Ce$ have been extended to higher spin, following experiments with the Euroball IV spectrometer. The two SD bands in $^{131}Ce$ have been linked together. However, despite the relatively high population intensity of the bands (up to 5\% of the respective channel), it has not been possible to unambiguously link any of the five SD bands into the low-spin, normally deformed structures of $^{131,132}Ce$. At the highest spins ($>60hbar$), some of the bands exhibit the characteristic behavior of smooth band termination, i.e., energetically costly angular-momentum generation near the finite mesoscopic limit. Configuration-dependent cranked Nilsson-Strutinsky calculations have been performed to suggest single-particle configurations for the SD bands and to investigate the possibility of termination in these bands.

Published
2005

15. High-spin structure of $^{102}$Ru

Author

Dóra Sohler, Takeshi Koike, János Timár, G. Duchêne, C. Vaman, A. Gizon, D. G. Jenkins, K. Starosta, D. B. Fossan, Pankaj S. Joshi, Zs. Dombrádi, D. Curien, J. N. Scheurer, J. Gizon, Jozsef Molnar, R. Wadsworth, Piotr Bednarczyk, Alejandro Algora, G. Rainovski, Anthony J. H. Simons, A. R. Wilkinson, A. Krasznahorkay, P. M. Raddon, E. S. Paul, L. Zolnai, Z. Gácsi, Zs. Dombrádi, A. Krasznahorkay, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), EUROBALL, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
nuclei with mass number 90 to 149, nuclear spin, 02 engineering and technology, Spin structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 21.10.Hw, 27.60.+j, 0202 electrical engineering, electronic engineering, information engineering, Neutron, Spin (physics), ruthenium, Nuclear Experiment, nuclear collective model, Physics, Spins, Spectrometer, high spin states, nuclear transition probabilities, nuclear energy levels, 020206 networking & telecommunications, Alpha particle, Charged particle, nuclear shell model, 21.10.Hw,21.60.Ev,23.20.Lv,27.60.+j, heavy ion-nucleus reactions, 020201 artificial intelligence & image processing, Woods–Saxon potential, Atomic physics, nuclear parity
Abstract

High-spin states in the nucleus 102Ru have been investigated via the 96Zr(13}C,alpha3n) reaction at beam energies of 51 and 58 MeV, using the EUROBALL IV gamma-ray spectrometer and the DIAMANT charged particle array. Several new high-spin bands have been established. The ground state band has been extended up to E_x \sim 12 MeV with Ipi = (26+), while the previously published negative-parity bands have been extended up to E_x \sim 11 and sim 9 MeV with I pi = (23-) and (20-), respectively. The deduced high-spin structure has been compared with Woods-Saxon TRS calculations and, on the basis of the measured Routhians, aligned angular momenta, and B(M1)/B(E2) ratios, nu h_11/2(g_{7/2},d_{5/2} configurations are suggested for the negative-parity structures.

Published
2005

16. Superdeformed nuclear matter in nuclei with Z $\geq$ 82 : Magnetic properties and neutron shell gap

Author

H. Hübel, R. Lucas, D. Curien, N. Kintz, G. Duchêne, M. G. Porquet, E. Mergel, S. Neumann, F.A. Beck, N. Nenoff, J. Domscheit, O. Dorvaux, N. Buforn, J.P. Vivien, Anna Wilson, G. Schoenwasser, P. Bednardcyk, I. Deloncle, P. Lautesse, A. Prévost, Alain Astier, B. J. P. Gall, A. Goergen, R. Duffait, A. Bauchet, O. Stezowski, M. Meyer, N. Redon, D. Rossbach, D. M. Cullen, 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), 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), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, 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), and 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)

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Isotope, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear matter, 01 natural sciences, Crosstalk, Nuclear physics, 0103 physical sciences, Quasiparticle, Nuclear fusion, Neutron, Atomic physics, 010306 general physics
Abstract

We report the results of an experiment, realized with the EUROBALL IV spectrometer, in which superdeformed (SD) states have been populated in 197,198Pb nuclei. Crosstalk transitions between two signature partner SD bands in 197Pb have been observed with an established M1 character, giving access to the magnetic properties of the $\nu$ [752]5/2 intruder orbital. Six new SD bands have been identified in 197,198Pb. The results are interpreted in the framework of cranked Hartree-Fock calculations. A mixing between quasi-particle excitations and an octupole vibration is suggested in the two SD isotopes.

Published
2004

17. Level structure of $^{69}$Se

Author

Stefanescu, I., Eberth, J., Angelis, G., Warr, N., Gersch, G., Steinhardt, T., Thelen, O., Weisshaar, D., Martinez, T., Jungclaus, A., Schwengner, R., Lieb, K. P., Stefanova, E. A., Dominique Curien, Gelberg, A., Heyd, Yvette, Federal Ministry of Education and Research (Germany), German Research Foundation, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

15 págs.; 9 figs.; 5 tabs. ; PACS number(s): 23.20.Lv, 21.10.Re, 27.50.1e, 21.60.2n, Excited levels in 69Se have been studied using the 40Ca(32S,2pn)69Se reaction at 95- and 105-MeV beam energy, γ rays have been detected with the EUROBALL spectrometer operated in conjunction with the neutron wall and the charged-particle detector array EUCLIDES. New level sequences with positive and negative parities have been identified from n-γγ and n-γγγ coincidences. Spins have been assigned to many of the levels on the basis of angular distribution and directional correlation measurements. Excitation energies of the positive-parity yrast band and the branching ratios of its decay are compared with the predictions of the rigid triaxial rotor plus particle model. ©2004 The American Physical Society, A. J. acknowledges financial support from the Deutsche Forschungsgemeinshaft (DPG) within the Heisenberg program. This work was supported by BMBF under Contract Nos. 06 OK 958 and 06 GÖ 951 and the EUROVIV Contract No. HPRI-CT-1999-000783.

Published
2004

18. Observation of a core-excited E4 isomer in ${98}Cd$

Author

Blazhev, A., Gsrska, M., Grawe, H., Nyberg, J., Palacz, M., Caurier, E., Dorvaux, O., Gadea, A., Nowacki, F., Andreoiu, C., Angelis, G., Balabanski, D., Beck, C., Cederwall, B., Dominique Curien, Dvring, J., Ekman, J., Fahlander, C., Lagergren, K., Ljungvall, J., Moszyski, M., Norlin, L. O., Plettner, C., Rudolph, D., Sohler, D., Spohr, K. M., Thelen, O., Weiszflog, M., Wisell, M., Woliska, M., Wolski, W., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Physics
Published
2004

19. First identification of excited states in the T$_z$ = 1/2 nucleus $^{93}$Pd

Author

Sohler, D., Lagergren, K., Blomqvist, J., Cederwall, B., Johnson, A., Hadinia, B., Milechina, L., Timar, J., Angelis, G., Bednarczyk, P., Dominique Curien, Gadea, A., Nyberg, J., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2004

20. Search for the Jacobi shape transition in light nuclei

Author

A. Maj, M. Kmiecik, M. Brekiesz, J. Grebosz, W. Meczyński, J. Styczeń, M. Ziebliński, K. Zuber, A. Bracco, F. Camera, G. Benzoni, B. Million, N. Blasi, S. Brambilla, S. Leoni, M. Pignanelli, O. Wieland, B. Herskind, P. Bednarczyk, D. Curien, J. P. Vivien, E. Farnea, G. De Angelis, D. R. Napoli, J. Nyberg, M. Kicińska-Habior, C. M. Petrache, J. Dudek, K. Pomorski, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Light nucleus, 010308 nuclear & particles physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Astrophysics::High Energy Astrophysical Phenomena, Spectrum (functional analysis), FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, medicine.anatomical_structure, Semi-empirical mass formula, 0103 physical sciences, medicine, Nuclear Experiment (nucl-ex), Atomic physics, 010306 general physics, Nuclear Experiment, Nucleus
Abstract

The gamma-rays following the reaction 105 MeV 18O + 28Si have been measured using the EUROBALL IV, HECTOR and EUCLIDES arrays in order to investigate the predicted Jacobi shape transition. The high-energy gamma-ray spectrum from the GDR decay indicates a presence of large deformations in hot 46Ti nucleus, in agreement with new theoretical calculations based on the Rotating Liquid Drop model., NS2002 Conference. Legnaro, Sptember 2002; to be published in EPJA

Published
2004

21. Study of superdeformation in A $\sim$ 60 mass region; high rsolution $\gamma$-ray spectroscopy at Euroball IV with the Recoil filter detector and the Euclides charged particle detector

Author

Dobaczewski, J., Vivien, J. P., Zuber, K., Bednarczyk, P., Byrski, T., Dominique Curien, Angelis, G., Dorvaux, O., Duchene, G., Farnea, E., Gadea, A., Gall, B. J. P., Grebosz, J., Isocrate, R., Maj, A., Meczynski, W., Merdinger, J. C., Prévost, A., Redon, N., Robin, J., Stézowski, O., Styczen, J., Ziblinski, M., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-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), EUROBALL, 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
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Matière Nucléaire

Published
2004

22. A probabilistic $\gamma$-ray tracking method for germanium detectors

Author

Piqueras, I., Beck, F.A., Pachoud, E., Duchene, G., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2004

23. Coupling a Clover detector array with the Prisma magnetic spectrometer

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, 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, C., Dominique Curien, 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., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2004

24. Superdeformed band at very high spin in $^{140}$Nd

Author

Neusser, A., Hübel, H., Al-Khatib, A., Bringel, P., Bürger, A., Nenoff, N., Schönwasser, G., Singh, A.K., Petrache, C.M., Lo Bianco, G., Ragnarsson, I., Hagemann, G.B., Herskind, B., Jensen, D.R., Sletten, G., Fallon A. Görgen, P., Bednarczyk, P., Curien, D., Gangopadhyay, G., Korichi, A., Lopez-Martens, A., Rao, B.V.T., Reddy, T.S., Singh, N., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
21.10.Re, 21.60.Ev, 23.20.Lv, 27.60.+j, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2004

25. GDR Feeding of the Highly-Deformed Band in 42Ca

Author

Kmieciek, M., Maj, A., Styczen, J., Bednarczyk, P., Brekiesz, M., Grebosz, J., Lach, M., Meczynski, W., Zieblinski, M., Zuber, K., Bracco, A., Camera, F., Benzoni, G., Million, B., Leoni, S., Wieland, O., Herskind, B., Dominique Curien, Dubray, N., Dudek, J., Schunck, N., Mazurek, K., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Theory, 24.30.Cz, 21.60.Ev, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The gamma-ray spectra from the decay of the GDR in the compound nucleus reaction 18O+28Si at bombarding energy of 105 MeV have been measured in an experiment using the EUROBALL IV and HECTOR arrays. The obtained experimental GDR strength function is highly fragmented, with a low energy (10 MeV) component, indicating a presence of a large deformation and Coriolis effects. In addition, the preferential feeding of the highly-deformed band in 42Ca by this GDR low energy component is observed., Comment: 6 pages, 2 figures, Proceedings of the Zakopane2004 Symposium, to be published in Acta Phys. Pol. B36 (2005)

Published
2004
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26. Decay-out of 151Tb yrast superdeformed band and shape coexistence

Author

Duchene, G., Robin, J., Odahara, A., Byrski, T., Beck, F. A., Twin, P. J., Bednarczyk, P., Curien, D., Courtin, S., Dorvaux, O., Gall, B., Joshi, P., Nourredine, A., Pachoud, E., Piqueras, I., Vievien, J. P., Zuber, K., Adimi, N., Appelbe, D. E., Bracco, A., Cederwall, B., Cullen, D. M., Ertuck, S., DE FRANCE, G., King, S. L., Korichi, A., Lagergreen, K., Leoni, S., LO BIANCO, G., LOPEZ MAERTENS, A., Lunardi, Santo, Million, B., Paul, E. S., Petrache, C., Redon, N., Saltarelli, A., Simpson, J., Stezowski, O., Venturelli, Roberto, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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), A. Bracco, C.A. Kalfas, EUROBALL, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université 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
25.70.Jj, 27.60.+j, 27.70.+q, Physics, Nuclear reaction, Isotope, Nucleosynthesis, Yrast, Nuclear shell model, Woods–Saxon potential, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Atomic physics, Spectral line, Radioactive decay
Abstract

Matière Nucléaire; Linking transitions between the superdeformed (SD) and the normal deformed (ND) wells have been searched in $^{151}$Tb nucleus. Two experiments of 5 and 17 days have been performed with EUROBALL IV. Transitions of 2818 keV and 3748 keV with intensities of about 1 % relative to the yrast SD band have been observed. Their decay-out properties are discussed in the text. In addition the eight known SD bands have been extended towards higher rotational frequencies where orbital crossings are observed. For the first time, weakly populated collective ND structures, likely triaxial, similar to the ones recently identified in $^{152}$Dy, $^{153}$Ho and ${155}$Er nuclei have been observed in ${151}$Tb. The SD and ND structures are interpreted in the frame of Woods-Saxon theoretical calculations.

Published
2004

27. Structure of polonium isotopes at high spin with RFD+Euroball IV

Author

B. Rossé, F. Camera, K. M. Spohr, P. Papka, D. Curien, A. Bracco, M. Brekiesz, M. Meyer, K. Keyes, M. Górska, I. Deloncle, J. Robin, A. Prévost, N. Redon, Alain Astier, W. Mȩczyński, P. Bednarczyk, M. G. Porquet, O. Dorvaux, M. Ziebliński, O. Stezowski, A. Maj, J.P. Vivien, J. E. Bastin, H. Hübel, Kai Zuber, B. J. P. Gall, T. Pawłat, A. Papenberg, J. Styczeń, J. Grȩbosz, 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), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), 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), EUROBALL, 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Spin states, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, General Physics and Astronomy, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Recoil, chemistry, 0103 physical sciences, 010306 general physics, Spin (physics), Beam energy, Polonium
Abstract

An experiment has been performed to investigate the structure at high spin of the neutron-deficient polonium isotopes using the Recoil Filter Detector coupled to the EUROBALL IV gamma array. High spin states of 200,201 Po have been populated by the 30 Si +176 Yb reaction at a beam energy of 160 MeV. We report here the performances of the RFD + EUROBALL IV coupling.

Published
2003

28. Hyperdeformed shapes and Jacobi Transitions in $^{126}$Ba

Author

Herskind, B., Hagemann, G. B., Sletten, G., Th. Dossing, Ronn Hansen, C., Odegard, S., Huebel, H., Bringel, P., Buerger, A., Neusser, A., Singh, A. K., Al-Khatib, A., Patel, S. B., Bracco, A., Leoni, S., Camera, F., Benzoni, G., Mason, P., Paleni, A., Million, B., Wieland, O., Bednarczyk, P., Azaiez, F., Byrski, T., Dominique Curien, Dakov, O., Duchene, G., Khalfallah, F., Gall, B. J. P., Piqueras, I., Robin, J., Dudek, J., Rowley, N., Redon, N., Hannachi, F., Scheurer, J. N., Wilson, J. N., Lopez-Martens, A., Korichi, A., Hauschild, K., Roccaz, J., Siem, S., Fallon, P., Y Lee, L., Goergen, A., Nyako, B. M., Algora, A., Zs. Dombradi, Gai, J., Kalinka, G., Sohler, D., Molnar, J., Timar, J., Zolnai, L., Juhasz, K., Maj, A., Kmiecik, M., Brekiesz, M., Styczen, J., Zuber, K., Lisle, J. C., Cederwall, B., Langergren, K., Evans, A. O., Rainovski, G., Angelis, G., La Rana, G., Moro, R., Gast, W., Lieder, R. M., Podsvirova, E., Jaeger, H., Petrache, C. M., Petrache, D., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-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), EUROBALL, Heyd, Yvette, 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), B., Herskind, G. B., Hagemann, G., Sletten, Døssing, T. h., C., Rønn Hansen, N., Schunck, S., Ødegard, H., Hübel, P., Bringel, A., Bürger, A., Neusser, A. K. Singh A., Al Khatib, S. B., Patel, A., Bracco, S., Leoni, F., Camera, G., Benzoni, P., Mason, A., Paleni, B., Million, O., Wieland, P., Bednarczyk, F., Azaiev, Byrski, T. h., D., Curien, O., Dakov, G., Duchene, F., Khalfallah, B., Gall, L., Piqera, J., Robin, J., Dudek, N., Rowley, B. M., Nyakø, A., Algora, Z., Dombradi, J., Gal, G., Kalinka, D., Sohler, J., Molnár, J., Timár, L., Zolnai, K., Juhász, N., Redon, F., Hannachi, J. N., Scheurer, J. N., Wilson, A., Lopez Marten, A., Korichi, K., Hauschild, J., Roccaz, S., Siem, P., Fallon, I. Y., Lee, A., Görgen, A., Maj, M., Kmiecik, M., Brekiesz, J., Styczen, K., Zuber, J. C., Lisle, B., Cederwall, K., Lagergren, A. O., Evan, G., Rainovski, G., De Angeli, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, W., Gast, R. M., Lieder, E., Podsvirova, H., Jäger, C. M., Petrache, and D. P. e. t. r. a. c. h., E.

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Matière Nucléaire

Published
2003

29. Electromagnetic B(E2) transition strengths along the yrast negative-parity band of $^{113}$I

Author

Petkov, P., Dewald, A., Fitzler, A., Klug, T., Angelis, G., Farnea, E., Gadea, A., Isocrate, R., Marginean, N., Napoli, D. R., Dominique Curien, Kintz, N., Lenzi, S., Lunardi, S., Menegazzo, R., Pucknell, V., Ring, C., Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2003

30. The EUROBALL gamma ray detector array

Author

G. de Angelis, D. Curien, A. Bracco, Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
Physics, Optics, 010308 nuclear & particles physics, business.industry, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 0103 physical sciences, Gamma ray detectors, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, business, 01 natural sciences
Published
2003

31. Correction method for Doppler broadened $\gamma$-ray lines using the linear momentum of the evaporated charged particles in heavy-ion induced fusion-evaporation reactions

Author

Emanuele Vardaci, G. Barreau, J. N. Scheurer, M. Harston, A. Brondi, G. La Rana, D. Cabaussel, F. Hannachi, R. Moro, F. Bourgine, M. M. Aléonard, J.F. Chemin, D. Boivin, M. Aiche, D. Curien, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), 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), EUROBALL, M., Aiche, M. M., Alonard, G., Barreau, D., Boivin, F., Bourgine, D., Cabaussel, J. F., Chemin, M., Harston, J. N., Scheurer, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Brondi, Augusto, Vardaci, Emanuele, and D. CURIEN, F. HANNACHI

Subjects
Nuclear and High Energy Physics, Light charged particle, Fusion–evaporation, Astrophysics::High Energy Astrophysical Phenomena, EUROBALL SPECTROMETER, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, SUPERDEFORMED BAND, Coincidence, DIAMANT, symbols.namesake, GAMMASPHERE, 0103 physical sciences, Doppler shift, Nuclear Experiment, 010306 general physics, COMPOUND NUCLEUS, GAMMA SPECTROSCOPY, Instrumentation, DETECTOR, Physics, Fusion, Spectrometer, 010308 nuclear & particles physics, Detector, Evaporation (deposition), Charged particle, EUROGAM II, symbols, Granularity, Atomic physics, Doppler effect
Abstract

A method based on the conservation of linear momentum is used to correct the position and the width of the γ-ray lines of the residual nucleus produced in heavy-ion induced fusion–evaporation reactions. This method implies the measurement of the total number of the emitted particles, their masses, energies and directions of emission in coincidence with the prompt γ-rays. It has been applied to the 120 MeV 32 S + 58 Ni reaction whose data have been collected using the high efficiency and large granularity 4π light charged particle detector DIAMANT, coupled to the 4π γ-ray spectrometer EUROGAM II.

Published
2003

32. Near-yrast structure of neutron-rich, N = 85 isotones

Author

Urban, W., Phillips, W.R., Ahmad, I., Rckawek, J., Korgul, A., Rzaca-Urban, T., Durell, J.L., Leddy, M.J., Smith, A.G., Varley, B.J., Schulz, N., Morss, L.R., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2002

33. Magnetic properties of the $\nu$j$_{15/2}$ intrudes orbital in the superdeformed minimum of $^{197}$Pb

Author

Astier, A., 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), EUROBALL, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2000

34. Spectroscopy of 44,46Ti with the Binary Reaction Spectrometer and Euroball

Author

A. Gadea, A. Algora, S. Thummerer, H. G. Bohlen, D. Bazzacco, M. Rousseau, R. Schwenger, D. R. Napoli, J.C. Lisle, G. de Angelis, C. Borcan, B. Gebauer, C. Bhattacharya, H. Schnare, Christian Beck, L. K bler, I. Peter, W. von Oertzen, F. D nau, R. Noucier, S. M. Lenzi, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
Physics, Spectrometer, Scattering, business.industry, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Phase (waves), Resonance, Binary number, interaction, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Particle identification, law.invention, Nuclear physics, Telescope, Optics, human communication, law, communication and language, Nuclear Experiment, business, Spectroscopy, Mathematical Physics
Abstract

A first experiment was performed with the Binary Reaction trigger Spectrometer (BRS) for Euroball, as second last experiment of phase III. The reaction 24Mg(32S, 56Ni*) at E = 163.5 MeV was chosen in order to populate a specific hyperdeformed resonance state in the compound nucleus 56Ni* at E* = 84 MeV (Jπ = 46+) and to investigate the spectroscopy of its binary descendents. The experimental setup combined the γ-detector array Euroball III, without the phase I Ge detectors, the two large-area gas detector telescopes of the BRS at forward angles and 31 of the 40 detectors of the 4π silicon ball EUROSiB (now called ROSiB) at backward angles. We report on results of binary reaction triggers collected with one BRS telescope. Binary events are separated from evaporation residues due to (i) the large laboratory scattering angles of the detected reaction fragments, the opening angle of the BRS telescope being θ = 12 ° – 46 °, and (ii) by means of particle identification in the telescope. In this paper channels with emission of 8Be plus two protons and of 12C will be discussed.

Published
2000

35. Search for magnetic properties in the $^{197}$Pb superdeformed nucleus

Author

Astier, A., 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), EUROBALL, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

36. Propriétés de la matière nucleaire superdéformée dans les régions de masse $\simeq$ 190 et A $\simeq$ 130

Author

Perriès, S., 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 Claude Bernard - Lyon I, Michèle Meyer, EUROBALL, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Ce travail de thèse porte sur l'étude des propriétés des noyaux superdéformés dans les régions de amsse A $\simeq$190 et A$\simeq$130. Les multidétecteurs $\gamma$ de la dernière génération permettent à présent d'avoir accès à des phénomènes peu intenses, tels que la dépopulation des bandes rotationnelles superdéformées. Nous présentons les résultats de deux expériences au cours desquelles les états superdéformés des boyaux ont été peuplés via des réactions de fusion-évaporation induites par ions lourds. La première a été réalisée auprès du multidétecteur $\gamma$ EUROGAM II installé à l'IReS Strasbourg et portait sur le noyau $^{193}$Pb. Dans la seconde, le noyau $^{136}$Nd a été étudié à l'aide du multidétecteur $\gamma$ EUROBALL III situé à Legnaro en Italie. De nouvelles procédures d'analyse ont été développées pour prendre en compte les détecteurs "Bouquets" et pour effectuer des mesures de corrélations angulaires avec la géométrice asymétrique d'EUROBALL III. L'analyse des événements $\gamma$ de haute multiplicité à permis la mise en évidence de transitions de lien $\gamma$ discrètes entre les états superdéformés et normalement déformés de ces noyaux. Ces résultats déterminent les spins et les énergies d'excitation des niveaux superdéformés. La comparaison avec les isotopes adjacents, offre l'opportunité d'estimer, pour la première fois, le gap d'appariement dans le second puits au moyen de différences de masses paires-impaires. Notre extraction montre que les corrélations d'appariement subsistent pour les états superdéformés des noyaux de Plomb et de Néodyme. Les propriétés magnétiques des noyaux superdéformés de la région de masse A$\simeq$190 ont été étudiées à partir de calculs microscopiques de champ-moyen auto-cohérents. Un traitement perturbativ de la rotation nous a permis de montrer que la valeur du facteur gyromatnétique collectif des noyaux pairs-pairs $^{190-200}$Pb et $^{188-198}$Hg diffère de 20% par rapport à l'estimation hydrodynamique Z/A. Dans ce cadre, nous confirmons les assignements spectroscopiques expérimentaux.

Published
1999

37. Désexcitation de la bande superdéformée yrast de $^{136}$Nd

Author

Perriès, S., 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), Anonyme, EUROBALL, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

38. Traitement des clusters

Author

Astier, A., 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), Anonyme, EUROBALL, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

39. Selected topics on nuclear structure by means of current and future $\gamma$-arrays EUROBALL and EXOGAM

Author

Duprat, J., Robert, Suzanne, Iori I., 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), EUROBALL, and EUROGAM

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

40. Experimental evidence for chirality in the odd-A 105Rh

Author

Jozsef Molnar, A. R. Wilkinson, E. S. Paul, C. Vaman, G. Duchêne, Anthony J. H. Simons, Zs. Dombradi, V. I. Dimitrov, D. Curien, Pankaj S. Joshi, A. Krasznahorkay, J. Gizon, P. M. Raddon, D. B. Fossan, R. Wadsworth, A. Gizon, J. N. Scheurer, P. Bednarczyk, S. Frauendorf, Alejandro Algora, K. Starosta, D. G. Jenkins, D. Sohler, Takeshi Koike, G. Rainovski, L. Zolnai, J. Timár, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), bibliotheque, LPSC, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and EUROBALL

Subjects
Physics, Nuclear and High Energy Physics, Spins, 010308 nuclear & particles physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Chiral partner bands, Yrast, Degenerate energy levels, Parity (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tilted axis cranking, 01 natural sciences, 21.10.Re, 21.60.-n, 23.20.Lv, 27.60.+j, Core-quasiparticle coupling calculations, Charged particle, Three-quasiparticle configuration, 0103 physical sciences, Quasiparticle, Atomic physics, 010306 general physics, Chirality (chemistry), Excitation
Abstract

High-spin states in 105 Rh were populated by the 96 Zr( 13 C, p3n) reaction at beam energies of 51 and 58 MeV, and studied using the EUROBALL IV γ -ray spectrometer and the DIAMANT charged particle array. A pair of nearly degenerate Δ I = 1 three-quasiparticle bands with the same spins and parity have been observed. Comparison of the experimental results with tilted axis cranking calculations confirms the chiral character of the two bands, while arguments based on the excitation of particles within the π g 9 / 2 ν ( h 11 / 2 ) 2 configuration of the yrast band and comparison with the previously observed γ band exclude the other possible interpretations. This is the first experimental evidence for three-quasiparticle chiral structure in the A ∼ 100 region, and the first simultaneous observation of a γ band and chiral partner bands in one nucleus.

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41. Stability of chiral geometry in the odd–odd Rh isotopes: spectroscopy of 106Rh

Author

C. Vaman, G. Rainovski, K. Starosta, A. R. Wilkinson, E. S. Paul, Jozsef Molnar, D. Curien, G. Duchêne, D. Sohler, R. Wadsworth, Pankaj S. Joshi, J. Timár, Takeshi Koike, Anthony J. H. Simons, Zs. Dombrádi, J. Gizon, P. Bednarczyk, A. Krasznahorkay, J. N. Scheurer, L. Zolnai, P. M. Raddon, A. Gizon, D. G. Jenkins, A. Algora, D. B. Fossan, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
Coupling, Physics, Nuclear and High Energy Physics, Isotope, Spectrometer, 010308 nuclear & particles physics, Yrast, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Stability (probability), Charged particle, 0103 physical sciences, Quasiparticle, Atomic physics, 010306 general physics, Spectroscopy, Nuclear Experiment
Abstract

International audience; 136 P. Joshi et al. / Physics Letters B 595 (2004) 135–142AbstractThe nucleus 106Rh was populated using the reaction 96Zr(13C, p2n) at a beam energy of 51 MeV. γ -ray transitions wereidentified using the EUROBALL-IV γ -ray spectrometer and the DIAMANT charged particle array. The yrast band, which isbased upon a πg−19/2 ⊗ νh11/2 configuration, has been extended to I π = (22−). A new I = 1 band has been identified whichresides ∼ 300 keV above the yrast band. Core–quasiparticle coupling model calculations show reasonably good agreement withthe data. The properties of the two pairs of strongly coupled bands are consistent with a chiral interpretation for these states. 2004 Elsevier B.V

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42. High-spin states in 124Ba

Author

Ali Al-Khatib, Singh, A. K., Hübel, H., Bringel, P., Bürger, A., Neusser, A., Schönwasser, G., Hagemann, G. B., Hansen, C. R., Herskind, B., Sletten, G., Algora, A., Zs. Dombradi, Gal, J., Kalinka, G., Molnar, J., Nyako, B. M., Sohler, D., Timar, J., Zolnai, L., Kmiecik, K., Maj, A., Styczen, J., Zuber, K., Hauschild, K., Korichi, A., Lopez-Martens, A., Roccaz, J., Siem, S., Hannachi, F., Scheurer, J. N., Bednarczyk, P., Byrski, T., Dominique Curien, Dorvaux, O., Duchêne, G., Gall, B. J. P., Khalfallah, F., Piqueras, I., Robin, J., Juhasz, K., Patel, S. B., Evans, A. O., Rainovski, G., Airoldi, A., Benzoni, G., Bracco, A., Camera, F., Million, B., Mason, P., Paleni, A., Sacchi, R., Wieland, O., Petrache, C. M., Petrache, D., La Rana, G., Moro, R., Angelis, G., Fallon, P., Y Lee, I., Lisle, J. C., Cederwall, B., Lagergren, K., Lieder, R. M., Podsvirova, E., Gast, W., Jäger, H., Redon, N., Görgen, A., 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 d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-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), EUROBALL, 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 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), and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 27.60.+j, 21.10.Re, 23.20.Lv, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Matière Nucléaire; International audience; High-spin states in 124Ba were populated using the 64Ni(64Ni,4n)124Ba reaction at beam energies of 255 and 261 MeV. Gamma-ray coincidences were measured using the EUROBALL detector array.The charged-particle detector array DIAMANT provided channel selection. The previously known rotational bands are extended to higher spins. Five new bands are observed, one of them extends up to the spin 40 \hbar region.

43. Coexisting wobbling and quasiparticle excitations in the triaxial potential well of $^{163}$Lu

Author

Jensen, D. R., Hagemann, G. B., Hamamoto, I., Herskind, B., Sletten, G., Wilson, J. N., Odegard, S. W., Spohr, K., Huebel, H., Bringel, P., Neusser, A., Schoenwasser, G., Singh, A. K., Ma, W. C., Amro, H., Bracco, A., Leoni, S., Benzoni, G., Maj, A., Petrache, C. M., Lo Bianco, G., Bednarczyk, P., Dominique Curien, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), EUROBALL, and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]

44. Search for hyperdeformation in light Xe nuclei

Author

Nyakó, B. M., Papp, F., Gál, J., Molnár, J., Timár, J., Algora, A., Dombrádi, Zs, Kalinka, G., Zolnai, L., Juhász, K., Singh, A. K., Hübbl, H., Al-Khatib, A., Bringel, P., Bürger, A., Neusser, A., Schönwasser, G., Herskind, B., Hagemann, G. B., Hansen, C. R., Sletten, G., Scheurer, J. N., Hannachi, F., Kmiecik, M., Maj, A., Styczeń, J., Zuber, K., Hauschild, K., Korichi, A., Lopez-Martens, A., Roccaz, J., Siem, S., Bednarczyk, P., Byrski, Th, Curien, D., Olivier Dorvaux, Duchène, G., Gall, B., Khalfallah, F., Piqueras, I., Robin, J., Patel, S. B., Evans, A. O., Rainovski, G., Airoldi, A., Benzoni, G., Bracco, A., Camera, F., Million, B., Mason, P., Paleni, A., Sacchi, R., Wieland, O., La Rana, G., Moro, R., Petrache, C. M., Petrache, D., Angelis, G., Fallon, P., Lee, I. -Y, Lisle, J. C., Cederwall, B., Lagergren, K., Lieder, R. M., Podsvirova, E., Gast, W., Jäger, H., Redon, N., Görgen, A., Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de 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), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), 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), EUROBALL, 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), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Heyd, Yvette

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 27.60.+j, 21.10.Re, 23.20.L, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

Matière Nucléaire; International audience; The ultimate search for hyperdeformation (HD) at high spins with the EUROBALL spectrometer was performed for 126Ba as a hyper long (HLHD) experiment. The DIAMANT ancillary detector was used to tag \gamma -rays in coincidence with the emitted light charged particles. Using \gamma -energy correlation methods, the particle--xn-\gamma data have been analysed to search for hyperdeformed structures in the corresponding residual nuclei. Data in coincidence with one \alpha particle indicate the presence of normal deformed collective bands up to very high spins and the possible occurrence of HD-like ridge structures in 122Xe.

45. Enhanced population of superdeformation in the mass A = 150 region

Author

Byrski, T., Beck, F. A., Bednarczyk, P., Kintz, N., Zuber, K., Vivien, J. P., Courtin, S., Dominique Curien, Duchene, G., Finck, C., Gall, B. J. P., Nourreddine, A., Odahara, A., Stézowski, O., Theisen, C., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-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), EUROBALL, Heyd, Yvette, 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
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Matière Nucléaire

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