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1,719 results on '"Lunardi, S"'

101. Lifetime measurements using a plunger device and the EUCLIDES Si array at the GALILEO γ-ray spectrometer

Author

Bradbury, J., primary, Testov, D., additional, Bakes, S., additional, Goasduff, A., additional, Mengoni, D., additional, Valiente-Dobón, J.J., additional, de Angelis, G., additional, Bazzacco, D., additional, Boiano, C., additional, Boso, A., additional, Cederwall, B., additional, Cicerchia, M., additional, Colucci, G., additional, Čolović, P., additional, Didierjean, F., additional, Doncel, M., additional, Dueñas, J.A., additional, Galtarossa, F., additional, Gozzelino, A., additional, Hadyńska-Klȩk, K., additional, Jaworski, G., additional, John, P.R., additional, Liu, H., additional, Lenzi, S., additional, Lunardi, S., additional, Menegazzo, R., additional, Mentana, A., additional, Müller-Gatermann, C., additional, Napoli, D.R., additional, Pasqualato, G., additional, Recchia, F., additional, Rocchini, M., additional, Riccetto, S., additional, Saygi, B., additional, Siciliano, M., additional, Sobolev, Yu., additional, and Szilner, S., additional

Published
2020
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103. High-spin structure in the transitional nucleus Xe 131: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Birkenbach, B., Blazhev, A., Coraggio, L., Teruya, E., Yoshinaga, N., Higashiyama, K., Arnswald, K., Bazzacco, D., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., De Angelis, G., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Fu, B., GADEA RAGA, ANDRES FRANCISCO, Gargano, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klȩk, K., Hess, H., Hetzenegger, R., Hirsch, R., Itaco, N., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Schneiders, D., Seidlitz, M., Siebeck, B., Smith, J. F., Söderström, P. -A., Stefanini, A. M., Steinbach, T., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J. J., Wolf, K., Zell, K. O., Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Birkenbach, B., Blazhev, A., Coraggio, L., Teruya, E., Yoshinaga, N., Higashiyama, K., Arnswald, K., Bazzacco, D., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., De Angelis, G., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Fu, B., Gadea, A., Gargano, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klȩk, K., Hess, H., Hetzenegger, R., Hirsch, R., Itaco, N., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Schneiders, D., Seidlitz, M., Siebeck, B., Smith, J. F., Söderström, P. -A., Stefanini, A. M., Steinbach, T., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J. J., Wolf, K., and Zell, K. O.

Subjects
Nuclear and High Energy Physics
Abstract

The transitional nucleus Xe131 is investigated after multinucleon transfer in the Xe136+Pb208 and Xe136+U238 reactions employing the high-resolution Advanced γ-Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and as an elusive reaction product in the fusion-evaporation reaction Sn124(B11,p3n)Xe131 employing the High-efficiency Observatory for γ-Ray Unique Spectroscopy (HORUS) γ-ray array coupled to a double-sided silicon strip detector at the University of Cologne, Germany. The level scheme of Xe131 is extended to 5 MeV. A pronounced backbending is observed at ω≈0.4MeV along the negative-parity one-quasiparticle νh11/2(α=-1/2) band. The results are compared to the high-spin systematics of the Z=54 isotopes and the N=77 isotones. Large-scale shell-model calculations employing the PQM130, SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in Xe129-132 provide insight into the changing nuclear structure along the Xe chain towards the N=82 shell closure. Proton occupancy in the π0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon.

Published
2018

107. Structure ofN =Z nuclei in the 1f7/2 shell

Author

Lenzi, S. M., Ur, C. A., Napoli, D. R., Bazzacco, D., Brandolini, F., Cameron, J. A., De Angelis, G., De Poli, M., Farnea, E., Gadea, A., Lunardi, S., Martinez-Pinedo, G., Poves, A., Alvarez, C. ROSSI, Somacal, H., and Svensson, C. E.

Published
1998
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108. 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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110. Deformation of highly deformed bands in Nd nuclei

Author

Petrache, C. M., Podolyák, Zs., Bazzacco, D., Lunardi, S., Menegazzo, R., Rao, M. N., Alvarez, C. Rossi, Scanferla, T., Ur, C. A., Venturelli, R., De Angelis, G., De Acuña, D., De Poli, M., Farnea, E., Gadea, A., Napoli, D. R., Dewald, A., Gableske, J., Brentano, P. Von, and Wyss, R.

Published
1998
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111. The scaffold protein p140Cap limits ERBB2-mediated breast cancer progression interfering with Rac GTPase-controlled circuitries

Author

Grasso, S, Chapelle, J, Salemme, V, Aramu, S, Russo, I, Vitale, N, Verdun di Cantogno, L, Dallaglio, K, Castellano, I, Amici, A, Centonze, G, Sharma, N, Lunardi, S, Cabodi, S, Cavallo, F, Lamolinara, A, Stramucci, L, Moiso, E, Provero, P, Albini, A, Sapino, A, Staaf, J, Di Fiore, P, Bertalot, G, Pece, S, Tosoni, D, Confalonieri, S, Iezzi, M, Di Stefano, P, Turco, E, Defilippi, P, Grasso S, Chapelle J, Salemme V, Aramu S, Russo I, Vitale N, Verdun di Cantogno L, Dallaglio K, Castellano I, Amici A, Centonze G, Sharma N, Lunardi S, Cabodi S, Cavallo F, Lamolinara A, Stramucci L, Moiso E, Provero P, Albini A, Sapino A, Staaf J, Di Fiore PP, Bertalot G, Pece S, Tosoni D, Confalonieri S, Iezzi M, Di Stefano P, Turco E, Defilippi P., Grasso, S, Chapelle, J, Salemme, V, Aramu, S, Russo, I, Vitale, N, Verdun di Cantogno, L, Dallaglio, K, Castellano, I, Amici, A, Centonze, G, Sharma, N, Lunardi, S, Cabodi, S, Cavallo, F, Lamolinara, A, Stramucci, L, Moiso, E, Provero, P, Albini, A, Sapino, A, Staaf, J, Di Fiore, P, Bertalot, G, Pece, S, Tosoni, D, Confalonieri, S, Iezzi, M, Di Stefano, P, Turco, E, Defilippi, P, Grasso S, Chapelle J, Salemme V, Aramu S, Russo I, Vitale N, Verdun di Cantogno L, Dallaglio K, Castellano I, Amici A, Centonze G, Sharma N, Lunardi S, Cabodi S, Cavallo F, Lamolinara A, Stramucci L, Moiso E, Provero P, Albini A, Sapino A, Staaf J, Di Fiore PP, Bertalot G, Pece S, Tosoni D, Confalonieri S, Iezzi M, Di Stefano P, Turco E, and Defilippi P.

Abstract

The docking protein p140Cap negatively regulates tumour cell features. Its relevance on breast cancer patient survival, as well as its ability to counteract relevant cancer signalling pathways, are not fully understood. Here we report that in patients with ERBB2-amplified breast cancer, a p140Cap-positive status associates with a significantly lower probability of developing a distant event, and a clear difference in survival. p140Cap dampens ERBB2-positive tumour cell progression, impairing tumour onset and growth in the NeuT mouse model, and counteracting epithelial mesenchymal transition, resulting in decreased metastasis formation. One major mechanism is the ability of p140Cap to interfere with ERBB2-dependent activation of Rac GTPase-controlled circuitries. Our findings point to a specific role of p140Cap in curbing the aggressiveness of ERBB2-amplified breast cancers and suggest that, due to its ability to impinge on specific molecular pathways, p140Cap may represent a predictive biomarker of response to targeted anti-ERBB2 therapies

Published
2017

112. Extreme nuclear deformations studied at the GASP spectrometer

Author

Lunardi, S., Bazzacco, D., Fabris, D., Lunardon, M., Medina, N. H., Nebbia, G., Petrache, C. M., Rizzuto, M. A., Alvarez, C. Rossi, Viesti, G., de Angelis, G., Cinausero, M., De Acuña, D., De Poli, M., Farnea, E., Fioretto, E., Maron, G., Napoli, D. R., Prete, G., Zhu, L. H., Utzelmann, S., Gast, W., Lieder, R. M., Georgiev, A., Xu, F., and Wyss, R.

Published
1997
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113. 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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114. Isomer spectroscopy in ¹³³Ba and high-spin structure of ¹³⁴Ba

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H.-K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., de Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, A., Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyak, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Şahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., and Zell, K. O.

Abstract

The transitional nuclei ¹³⁴Ba and ¹³³Ba are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The Jπ=19/2⁺ state at 1942 keV in ¹³³Ba is identified as an isomer with a half-life of 66.6(20)ns corresponding to a B(E1) value of 7.7(4)×10⁻⁶e²fm² for the Jπ=19/2⁺ to Jπ=19/2⁻ transition. The level scheme of ¹³⁴Ba above the Jπ=10⁺ isomer is extended to approximately 6 MeV. A pronounced backbending is observed at ℏω=0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z=56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional ¹³⁴Ba.

Published
2019

115. New spectroscopic information on 211,213Tl : A changing structure beyond the N=126 shell closure

Author

Gottardo, A., Valiente-Dobón, J. J., Benzoni, G., Morales, A. I., Gadea, A., Lunardi, S., Boutachkov, P., Bruce, A. M., Górska, M., Grebosz, J., Pietri, S., Podolyak, Zs., Pfützner, M., Regan, P. H., Rudolph, D., Weick, H., Alcántara Núñez, J., Algora, A., Al-Dahan, N., de Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortes, M. L., Crespi, F. C. L., Corsi, A., Denis Bacelar, A. M., Deo, A. Y., Domingo-Pardo, C., Doncel, M., Dombradi, Zs., Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S. M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Naqvi, F., Nociforo, C., Prochazka, A., Prokopowicz, W., Recchia, F., Ribas, R. V., Reed, M. W., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Steiger, K., Strmen, P., Swan, T. P. D., Szarka, I., Ur, C. A., Walker, P.M., Wieland, O., Wollersheim, H-J., Nowacki, F., and Maglione, E.

Subjects
isomeric decays, Nuclear Theory, Subatomic Physics, Physics::Atomic and Molecular Clusters, Nuclear Experiment, relativistic projectile fragmentation, gamma ray spectroscopy
Abstract

The neutron-rich isotopes 211;213Tl, beyond the N = 126 shell-closure, have been studied for the first time in isomer γ-ray decay, exploiting the fragmentation of a primary uranium beam at the FRS-RISING (FRagment Separator-Rare ISotopes INvestigation at GSI) setup at GSI. The observed isomeric states in 211;213Tl show a deviation from the seniority-like scheme of 209Tl. The possible interpretation of the data is discussed on the basis of energy-level systematics and shell-model calculations.

Published
2019

116. New spectroscopic information on Tl 211,213: A changing structure beyond the N=126 shell closure

Author

Gottardo, A., Valiente-Dobón, J. J., Benzoni, G., Morales, Ana Isabel, Gadea, Andrés, Lunardi, S., Boutachkov, P., Bruce, A.M., Górska, M., Grebosz, J., Pietri, S., Podolyák, Z., Pfützner, M., Regan, P. H., Rudolph, D., Weick, H., Alcántara Núñez, J., Algora, Alejandro, Al-Dahan, N., De Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Denis Bacelar, A. M., Deo, A. Y., Domingo Pardo, César, Doncel, M., Dombrádi, Zs., Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., and Generalitat Valenciana

Subjects
Nuclear Theory, Physics::Atomic and Molecular Clusters, Nuclear Experiment
Abstract

The neutron-rich isotopes Tl211,213, beyond the N=126 shell closure, have been studied for the first time in isomer γ-ray decay, exploiting the fragmentation of a primary uranium beam at the Fragment Separator-Rare Isotopes Investigation at GSI setup. The observed isomeric states in Tl211,213 show a deviation from the seniority-like scheme of Tl209. The possible interpretation of the data is discussed on the basis of energy-level systematics and shell-model calculations.

Published
2019

118. New spectroscopic information on $^{211 , 213}$Tl : A changing structure beyond the N = 126 shell closure

Author

Gottardo, A., Valiente-Dobón, J. J., Benzoni, G., Morales, A. I., Gadea, A., Lunardi, S., Boutachkov, P., Bruce, A. M., Górska, M., Grebosz, J., Pietri, S., Podolyák, Zs., Pfützner, M., Regan, P. H., Rudolph, D., Weick, H., Alcántara Núñez, J., Algora, A., Al-Dahan, N., De Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortes, M. L., Crespi, F. C. L., Corsi, A., Denis Bacelar, A. M., Deo, A. Y., Domingo-Pardo, C., Doncel, M., Dombradi, Zs., Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S. M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Naqvi, F., Nociforo, C., Prochazka, A., Prokopowicz, W., Recchia, F., Ribas, R. V., Reed, M. W., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Steiger, K., Strmen, P., Swan, T. P. D., Szarka, I., Ur, C. A., Walker, P. M., Wieland, O., Wollersheim, H-J., Nowacki, F., and Maglione, E.

Subjects
ddc:530
Abstract

Physical review / C covering nuclear physics 99(5), 054326 (2019). doi:10.1103/PhysRevC.99.054326, Published by Inst., Woodbury, NY

Published
2019
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119. The 4 π highly-efficient light-charged-particle detector EUCLIDES, installed at the GALILEO array for in-beam γ -ray spectroscopy

Author

Testov, D., Mengoni, D., Goasduff, A., GADEA RAGA, ANDRES FRANCISCO, Isocrate, R., John, P. R., de Angelis, G., Bazzacco, D., Boiano, C., Boso, A., Cocconi, P., Dueñas, J. A., Egea Canet, F. J., Grassi, L., Hadyńska-Klek, K., Jaworski, G., Lunardi, S., Menegazzo, R., Napoli, D. R., Recchia, F., Siciliano, M., and Valiente-Dobón, J. J.

Subjects
Nuclear and High Energy Physics
Published
2019

120. Identification of high-spin proton configurations in $^{136}\mathrm{Ba}$ and $^{137}\mathrm{Ba}$

Author

Kaya, L., Vogt, A., Reiter, P., Müller-Gatermann, C., Gargano, A., Coraggio, L., Itaco, N., Blazhev, A., Arnswald, K., Bazzacco, D., Birkenbach, B., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hetzenegger, R., Hirsch, R., John, P.R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Siciliano, M., Scarlassara, F., Seidlitz, M., Söderström, P.A., Stefanini, A.M., Stezowski, O., Szilner, S., Szpak, B., Ur, C., Valiente-Dobón, J.J., Weinert, M., Wolf, K., Zell, K.O., Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire 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), ILL, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-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 Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

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

International audience; The high-spin structures of Ba136 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Ba136 is populated in a Xe136+U238 MNT reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and in two Be9+Te130 fusion-evaporation reactions using the High-efficiency Observatory for γ-Ray Unique Spectroscopy (HORUS) at the FN tandem accelerator of the University of Cologne, Germany. Furthermore, both isotopes are populated in an elusive reaction channel in the B11+Te130 fusion-evaporation reaction utilizing the HORUS γ-ray array. The level scheme above the Jπ=10+ isomer in Ba136 is revised and extended up to an excitation energy of approximately 5.5 MeV. From the results of angular-correlation measurements, the Ex=3707- and Ex=4920-keV states are identified as the bandheads of positive- and negative-parity cascades. While the high-spin regimes of both Te132 and Xe134 are characterized by high-energy 12+→10+ transitions, the Ba136E2 ground-state band is interrupted by negative-parity states only a few hundred keV above the Jπ=10+ isomer. Furthermore, spins are established for several hitherto unassigned high-spin states in Ba137. The new results close a gap along the high-spin structure of N

Published
2019
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121. Isomer spectroscopy in $^{133}$Ba and high-spin structure of $^{134}$Ba

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H.K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hirsch, R., John, P.R., Jolie, J., Jungclaus, A., Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.M., Saed-Samii, N., Şahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.A., Stefanini, A.M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J.J., Wolf, K., Yanase, K., Yoshinaga, N., Zell, K.O., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Laue-Langevin (ILL), ILL, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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], Nuclear Structure, multinucleon transfer reactions, structure of Ba isotopes
Abstract

International audience; The transitional nuclei $^{134}$Ba and $^{133}$Ba are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The Jπ=19/2+ state at 1942 keV in $^{133}$Ba is identified as an isomer with a half-life of 66.6(20)ns corresponding to a B(E1) value of 7.7(4)×10−6e2fm2 for the Jπ=19/2+ to Jπ=19/2− transition. The level scheme of $^{134}$Ba above the Jπ=10+ isomer is extended to approximately 6 MeV. A pronounced backbending is observed at ℏω=0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z=56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional $^{134}$Ba.

Published
2019
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122. Isomer spectroscopy in Ba-133 and high-spin structure of Ba-134

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H.-K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, Andrés, Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, Andrea, Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., Zell, K. O., Federal Ministry of Education and Research (Germany), European Commission, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Science and Technology Facilities Council (UK), and Generalitat Valenciana

Abstract

18 pags., 11 figs., 4 tabs., The transitional nuclei Ba-134 and Ba-133 are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The J(pi) = 19/2(+) state at 1942 keV in Ba-133 is identified as an isomer with a half-life of 66.6(20) ns corresponding to a B(E1) value of 7.7(4) x 10(-6) e(2) fm(2) for the J(pi) = 19/2(+) to J(pi) = 19/2(-) transition. The level scheme of Ba-134 above the J(pi) = 10(+) isomer is extended to approximately 6 MeV. A pronounced backbending is observed at h omega = 0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z = 56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional Ba-134., The research leading to these results has received funding from the German BMBF under Contracts No. 05P15PKFN9 TP1 and No. 05P18PKFN9 TP1, from the European Union Seventh Framework Programme FP7/2007-2013 under Grant No. 262010-ENSAR, from the Spanish Ministerio de Ciencia e Innovación under Contract No. FPA2011-29854-C04, from the Spanish Ministerio de Economía y Competitividad under Contract No. FPA2014- 57196-C5, and from the U.K. Science and Technology Facilities Council (STFC). One of the authors (A. Gadea) has been supported by the Generalitat Valenciana, Spain, under Grant No. PROMETEOII/2014/019 and EU under the FEDER program.

Published
2019

124. Low-lying bands with different quadrupole deformation in 155Dy

Author

Petkov P., Yavahchova M.S., Möller O., Dewald A., Saha B., Fitzler A., Jessen K., Tonev D., Klug T., Heinze S., Jolie J., von Brentano P., Goutev N., Bazzacco D., Ur C. A., Farnea C. A., Axiotis M., Lunardi S., de Angelis G., Napoli D. R., Marginean N., Martinez T., and Caprio M. A.

Subjects
Physics, QC1-999
Abstract

To investigate the interplay between collective and single particle degrees of freedom in odd nuclei, Recoil distance Doppler-shift and Doppler-shift attenuation lifetime measurements were carried out for levels in 155Dy in coincidence detection of gamma-rays. 26 lifetimes were determined using the Differential decay curve method. Particle plus triaxial rotor model (PTRM) calculations were performed to compare the experimental level scheme and transition strengths with theoretical ones in order to get information on the quadrupole deformation (є,γ) of the bands. As a result, different quadrupole deformations for the one-quasineutron bands at low and medium spins are deduced.

Published
2014
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125. Study of shape transition in the neutron-rich Os isotopes

Author

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

Subjects
Physics, QC1-999
Abstract

The neutron-rich isotopes of tungsten, osmium and platinum have different shapes in their ground states and present also shape transitions phenomena. Spectroscopic information for these nuclei is scarce and often limited to the gamma rays from the decay of isomeric states. For the neutron-rich even-even osmium isotopes 194Os and 198Os, a shape transition between a slightly prolate deformed to an oblate deformed ground state was deduced from the observed level schemes. For the even-even nucleus lying in between, 196Os, no gamma ray transition is known. In order to elucidate the shape transition and to test the nuclear models describing it, this region was investigated through gamma-ray spectroscopy using the AGATA demonstrator and the large acceptance heavy-ion spectrometer PRISMA at LNL, Italy. A two-nucleon transfer from a 198Pt target to a stable 82Se beam was utilized to populate medium-high spin states of 196Os. The analysis method and preliminary results, including the first life-time measurement of isomeric states with AGATA, are presented.

Published
2014
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126. New Isomers in the Neutron-Rich Region Beyond 208Pb

Author

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

Subjects
Physics, QC1-999
Abstract

The region of neutron-rich nuclei beyond 208Pb has been very difficult to explore due to its high mass and exoticity. However, recent experimental improvements allowed one to perform a quite extended isomer decay spectroscopy of these nuclei.

Published
2014
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127. Characterization of a highly-segmented silicon prototype for the TRACE array

Author

Gelain M., Mengoni D., Lunardi S., Dueñas J., and Assie M.

Subjects
Physics, QC1-999
Abstract

In view of the construction of novel and high-sensitive instrumentation for the emerging ISOL facilities new prototypes have being implemented and tested. The contribution focuses at the investigation of the detection efficiency of an innovative silicon-pad prototype, which is the key element for the construction of the TRACE array, pursued for the SPES facility based at the Legnaro National Laboratories (Italy). The inter-pad size has been estimated by using a commercial 100-MHz-14-bit CAEN digitizer for sampling the signals obtained by an alpha-source scan over the inter-pad region.

Published
2014
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128. Study of the γ decay of high-lying states in 208Pb via inelastic scattering of 17O ions

Author

Crespi F.C.L., Kmiecik M., Bracco A., Leoni S., Maj A., Benzoni G., Blasi N., Boiano C., Bottoni S., Brambilla S., Camera F., Ceruti S., Giaz A., Million B., Morales A.I., Nicolini R., Pellegri L., Riboldi S., Vandone V., Wieland O., Bednarczyk P., Ciemala M., Grebosz J., Krzysiek M., Mazurek K., Zieblinski M., Bazzacco D., Bellato M., Birkenbach B., Bortolato D., Calore E., Angelis G. De, Farnea E., Gadea A., Görgen A., Gottardo A., Isocrate R., Lenzi S., Lunardi S., Mengoni D., Michelagnoli C., Molini P., Napoli D.R., Recchia F., Sahin E., Siebeck B., Siem S., Ur C., and Dobon J.J. Valiente

Subjects
Physics, QC1-999
Abstract

A measurement of the high-lying states in 208Pb has been made using 17O beams at 20 MeV/u. The gamma decay following inelastic excitation was measured with the detector system AGATA Demonstrator based on segmented HPGe detectors, coupled to an array of large volume LaBr3:Ce scintillators and to an array of Si detectors. Preliminary results in comparison with (γ,γ’) data, for states in the 5-8 MeV energy interval, are presented.

Published
2014
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129. Preface

Author

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

Subjects
Physics, QC1-999
Published
2014
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130. 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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132. Access to Gamma-ray Spectroscopy of Neutron-Rich sdfp Shell Nuclei

Author

Fornal, B., primary, Broda, R., additional, Królas, W., additional, Pawlat, T., additional, Wrzesiński, J., additional, Bazzacco, D., additional, Lunardi, S., additional, Rossi-Alvarez, C., additional, Viesti, G., additional, de Angelis, G., additional, Cinausero, M., additional, Napoli, D., additional, Helariutta, K., additional, Jones, P. M., additional, Julin, R., additional, Juutinen, S., additional, Savelius, A., additional, Butler, P. A., additional, Cocks, J. F. C., additional, and Gerl, J., additional

Published
2000
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133. High Resolution γ-Ray Spectrometry Using Galileo Array

Author

Testov, D., Valiente-Dobon, J. J., Mengoni, D., Recchia, F., Goasduff, A., Boso, A., Lenzi, S., de Angelis, G., Bakes, S., Boiano, C., Cederwall, Bo, Colucci, G., Cicerchia, M., Colovic, P., Didierjean, F., Doncel, M., Duenas, J. A., Galtarossa, F., Gozzelino, A., Hadynska-Klek, K., Isocrate, R., Jaworski, G., John, P. R., Liu, H., Lunardi, S., Menegazzo, R., Mentana, A., Modamio, V., Nannini, A., Napoli, D. R., Palacz, M., Pasqualato, G., Rocchini, M., Riccetto, S., Saygi, B., Sahin, E., Siciliano, M., Sobolev, Y., Szilner, S., Testov, D., Valiente-Dobon, J. J., Mengoni, D., Recchia, F., Goasduff, A., Boso, A., Lenzi, S., de Angelis, G., Bakes, S., Boiano, C., Cederwall, Bo, Colucci, G., Cicerchia, M., Colovic, P., Didierjean, F., Doncel, M., Duenas, J. A., Galtarossa, F., Gozzelino, A., Hadynska-Klek, K., Isocrate, R., Jaworski, G., John, P. R., Liu, H., Lunardi, S., Menegazzo, R., Mentana, A., Modamio, V., Nannini, A., Napoli, D. R., Palacz, M., Pasqualato, G., Rocchini, M., Riccetto, S., Saygi, B., Sahin, E., Siciliano, M., Sobolev, Y., and Szilner, S.

Abstract

The GALILEO γ-ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam γ-ray spectroscopy methods. Such studies benefit from reactions induced by the intense stable beams delivered by the Tandem-ALPI-PIAVE accelerator complex and by the radioactive beams which will be provided by the SPES facility. In this paper we outline two experiments performed within the experimental campaign at GALILEO coupled to the EUCLIDES Si-ball and the Neutron Wall array. The first one was aimed at spectroscopic studies in A=31 mirror nuclei and the second one at measurements of lifetimes of excited states in nuclei in the vicinity of 100Sn., QC 20210914

Published
2019
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134. New spectroscopic information on Tl-211,Tl-213: A changing structure beyond the N=126 shell closure

Author

Gottardo, A., Valiente-Dobon, J. J., Benzoni, G., Morales, A., I, Gadea, A., Lunardi, S., Boutachkov, P., Bruce, A. M., Gorska, M., Grebosz, J., Pietri, S., Podolyak, Zs, Pfuetzner, M., Regan, P. H., Rudolph, D., Weick, H., Alcantara Nunez, J., Algora, A., Al-Dahan, N., de Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortes, M. L., Crespi, F. C. L., Corsi, A., Bacelar, A. M. Denis, Deo, A. Y., Domingo-Pardo, C., Doncel, M., Dombradi, Zs, Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., Klupp, S., Kojouharov, I, Kurz, N., Lenzi, S. M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Naqvi, F., Nociforo, C., Prochazka, A., Prokopowicz, W., Recchia, F., Ribas, R., V, Reed, M. W., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Steiger, K., Strmen, P., Swan, T. P. D., Szarka, I, Ur, C. A., Walker, P. M., Wieland, O., Wollersheim, H-J, Nowacki, F., Maglione, E., Gottardo, A., Valiente-Dobon, J. J., Benzoni, G., Morales, A., I, Gadea, A., Lunardi, S., Boutachkov, P., Bruce, A. M., Gorska, M., Grebosz, J., Pietri, S., Podolyak, Zs, Pfuetzner, M., Regan, P. H., Rudolph, D., Weick, H., Alcantara Nunez, J., Algora, A., Al-Dahan, N., de Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortes, M. L., Crespi, F. C. L., Corsi, A., Bacelar, A. M. Denis, Deo, A. Y., Domingo-Pardo, C., Doncel, M., Dombradi, Zs, Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., Klupp, S., Kojouharov, I, Kurz, N., Lenzi, S. M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Naqvi, F., Nociforo, C., Prochazka, A., Prokopowicz, W., Recchia, F., Ribas, R., V, Reed, M. W., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Steiger, K., Strmen, P., Swan, T. P. D., Szarka, I, Ur, C. A., Walker, P. M., Wieland, O., Wollersheim, H-J, Nowacki, F., and Maglione, E.

Abstract

The neutron-rich isotopes Tl-211,Tl-213, beyond the N = 126 shell closure, have been studied for the first time in isomer gamma-ray decay, exploiting the fragmentation of a primary uranium beam at the Fragment Separator-Rare Isotopes Investigation at GSI setup. The observed isomeric states in Tl-211,Tl-213 show a deviation from the seniority-like scheme of Tl-209. The possible interpretation of the data is discussed on the basis of energy-level systematics and shell-model calculations.

Published
2019

135. Isomer spectroscopy in Ba-133 and high-spin structure of Ba-134

Author

Federal Ministry of Education and Research (Germany), European Commission, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Science and Technology Facilities Council (UK), Generalitat Valenciana, Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H. K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, Andrés, Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, Andrea, Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., Zell, K. O., Federal Ministry of Education and Research (Germany), European Commission, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Science and Technology Facilities Council (UK), Generalitat Valenciana, Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Shimizu, N., Utsuno, Y., Wang, H. K., Gargano, A., Coraggio, L., Itaco, N., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F.C.L., De Angelis, G., Droste, M., Eberth, J., Esmaylzadeh, A., Farnea, E., Fioretto, E., Fransen, C., Gadea, Andrés, Giaz, A., Görgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hirsch, R., John, P. R., Jolie, J., Jungclaus, Andrea, Karayonchev, V., Kornwebel, L., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatovic, T., Montagnoli, G., Montanari, D., Müller-Gatermann, C., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Régis, J.-M., Saed-Samii, N., Sahin, E., Scarlassara, F., Schomacker, K., Seidlitz, M., Siebeck, B., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, S., Szpak, B., Teruya, E., Ur, C., Valiente-Dobón, J. J., Wolf, K., Yanase, K., Yoshinaga, N., and Zell, K. O.

Abstract

The transitional nuclei Ba-134 and Ba-133 are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The J(pi) = 19/2(+) state at 1942 keV in Ba-133 is identified as an isomer with a half-life of 66.6(20) ns corresponding to a B(E1) value of 7.7(4) x 10(-6) e(2) fm(2) for the J(pi) = 19/2(+) to J(pi) = 19/2(-) transition. The level scheme of Ba-134 above the J(pi) = 10(+) isomer is extended to approximately 6 MeV. A pronounced backbending is observed at h omega = 0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z = 56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional Ba-134.

Published
2019

136. High-spin states in the deformed 122Ba nucleus

Author

Petrache, C.M., Lo Bianco, G., Bazzacco, D., Kröll, Th., Lunardi, S., Menegazzo, R., Nespolo, M., Pavan, P., Rossi Alvarez, C., de Angelis, G., Farnea, E., Martinez, T., Marginean, N., Napoli, D.R., and Blasi, N.

Published
2001
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139. Search for hyperdeformed structures populated in the 37Cl+120Sn reaction by using EUROBALL III

Author

Rizzi, V., Viesti, G., Bazzacco, D., Algora-Pineda, A., Appelbe, D., de Angelis, G., Belcari, N., Cinausero, M., De Poli, M., Drake, T.E., Gadea, A., Galindo-Uribarri, A., Gelli, N., Fabris, D., Farnea, E., Fioretto, E., Krolas, W., Kroll, T., Lucarelli, F., Lunardi, S., Lunardon, M., Martinez, T., Menegazzo, R., Nayak, B.K., Nebbia, G., Napoli, D.R., Nyakó, B., Petrache, C., Podolyák, Zs., Prete, G., Rossi Alvarez, C., Samant, A., Spolaore, P., Ur, C., and Zuber, K.

Published
2000
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141. High spin states in 128Ba

Author

Vogel, O., Chakrawarthy, R.S., Dewald, A., Petkov, P., Jessen, K., Gableske, J., von Brentano, P., Bazzacco, D., Gizon, A., Gizon, J., Lunardi, S., Napoli, D.R., Pavan, P., Rossi Alvarez, C., and Wiedenhöver, I.

Published
1999
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142. Five-quasiparticle bands in 127Ba

Author

Dewald, A., Schmidt, A., Alexius, G., Vogel, O., Chakrawarthy, R.S., Bazzacco, D., von Brentano, P., Gizon, A., Gizon, J., Lunardi, S., Napoli, D.R., Pavan, P., Rossi Alvarez, C., and Wiedenhöver, I.

Published
1998
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144. New spectroscopic information on Tl211,213 : A changing structure beyond the N=126 shell closure

Author

Gottardo, A., Valiente-Dobón, J. J., Benzoni, G., Morales, A. I., Gadea, A., Lunardi, S., Boutachkov, P., Bruce, A. M., Górska, M., Grebosz, J., Pietri, S., Podolyák, Zs., Pfützner, M., Regan, P. H., Rudolph, D., Weick, H., Alcántara Núñez, J., Algora, A., Al-Dahan, N., de Angelis, G., Ayyad, Y., Alkhomashi, N., Allegro, P. R. P., Bazzacco, D., Benlliure, J., Bowry, M., Bracco, A., Bunce, M., Camera, F., Casarejos, E., Cortes, M. L., Crespi, F. C. L., Corsi, A., Denis Bacelar, A. M., Deo, A. Y., Domingo-Pardo, C., Doncel, M., Dombradi, Zs., Engert, T., Eppinger, K., Farrelly, G. F., Farinon, F., Geissel, H., Gerl, J., Goel, N., Gregor, E., Habermann, T., Hoischen, R., Janik, R., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S. M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Naqvi, F., Nociforo, C., Prochazka, A., Prokopowicz, W., Recchia, F., Ribas, R. V., Reed, M. W., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Steiger, K., Strmen, P., Swan, T. P. D., Szarka, I., Ur, C. A., Walker, P. M., Wieland, O., Wollersheim, H-J., Nowacki, F., and Maglione, E.

Subjects
ddc
Published
2018

145. High Resolution $\gamma$-Ray Spectroscopy Using GALILEO Array

Author

Testov, D., Valiente-Dobón, J. J., Mengoni, D., Recchia, F., Goasduff, A., Boso, A., Lenzi, S., de Angelis, G., Bakes, S., Boiano, C., Cederwall, B., Colucci, G., Cicerchia, M., Čolović, P., Didierjean, F., Doncel, M., {n}as, J. A. Due, Galtarossa, F., Gozzelino, A., Hadyńska-Klȩk, K., Isocrate, R., Jaworski, G., John, P. R., Liu, H., Lunardi, S., Menegazzo, R., Mentana, A., Modamio, V., Nannini, A., Napoli, D. R., Palacz, M., Pasqualato, G., Rocchini, M., Riccetto, S., Saygi, B., Sahin, E., Siciliano, M., Sobolev, Yu., Szilner, S., Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, High resolution, nuclear state lifetime, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Optics, γ-ray spectrometer, 0103 physical sciences, nuclear structure, Physics::Accelerator Physics, Galileo (vibration training), business, Spectroscopy, Nuclear Experiment, γ-Ray spectroscopy, 010301 acoustics
Abstract

The GALILEO $\gamma$-ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam $\gamma$-ray spectroscopy methods. Such studies benefit from reactions induced by the intense stable beams delivered by the Tandem-ALPI-PIAVE accelerator complex and by the radioactive beams which will be provided by the SPES facility. In this paper we outline two experiments performed within the experimental campaign at GALILEO coupled to the EUCLIDES Si-ball and the Neutron Wall array. The first one was aimed at spectroscopic studies in A=31 mirror nuclei and the second one at measurements of lifetimes of excited states in nuclei in the vicinity of $^{100}$Sn., Comment: The IX International Symposium on EXOtic Nuclei (EXON-2018)

Published
2018
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146. High-spin structure in the transitional nucleus 1 131Xe: Competitive neutron and proton alignment in the vicinity of the N = 82 shell closure

Author

Kaya, L, Vogt, A, Reiter, P, Siciliano, M, Birkenbach, B, Blazhev, A, Coraggio, L, Teruya, E, Yoshinaga, N, Higashiyama, K, Arnswald, K, Bazzacco, D, Bracco, A, Bruyneel, B, Corradi, L, Crespi, F, de Angelis, G, Eberth, J, Farnea, E, Fioretto, E, Fransen, C, Fu, B, Gadea, A, Gargano, A, Giaz, A, Görgen, A, Gottardo, A, Hadynska-Klek, Katarzyna, Hess, H, Hetzenegger, R, Hirsch, R, Itaco, N, John, P, Jolie, J, Jungclaus, A, Korten, W, Leoni, S, Lewandowski, L, Lunardi, S, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Podolyak, Zsolt, Pollarolo, G, Pullia, A, Queiser, M, Recchia, F, Rosiak, D, Saed-Samii, N, Şahin, E, Scarlassara, F, Schneiders, D, Seidlitz, M, Siebeck, B, Smith, J, Söderström, P-A, Stefanini, A, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Ur, C, Valiente-Dobón, J, Wolf, K, and Zell, K

Abstract

The transitional nucleus 131Xe is investigated after multinucleon transfer (MNT) in the 136Xe+208Pb and 136Xe+238U reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and as an elusive reaction product in the fusion-evaporation reaction 124Sn(11B,p3n) 131Xe employing the HORUS γ-ray array coupled to a double-sided silicon strip detector (DSSSD) at the University of Cologne, Germany. The level scheme of 131Xe is extended to 5 MeV. A pronounced backbending is observed at ~ω ≈ 0.4 MeV along the negative-parity one-quasiparticle νh11/2(α = −1/2) band. The results are compared to the high-spin systematics of the Z = 54 isotopes and the N = 77 isotones. Large-scale shell-model calculations (LSSM) employing the PQM130, SN100PN, GCN50:82, SN100-KTH and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in 129−132Xe provide insight into the changing nuclear structure along the Xe chain towards the N = 82 shell closure. Proton occupancy in the π 0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon.

Published
2018

147. Quadrupole collectivity in Ca-42 from low-energy Coulomb excitation with AGATA

Author

Hadynska-Klek, K, Napiorkowski, PJ, Zielinska, M, Srebrny, J, Maj, A, Azaiez, F, Dobon, JJ Valiente, Kicinska-Habior, M, Nowacki, F, Naidja, H, Bounthong, B, Rodriguez, TR, de Angelis, G, Abraham, T, Kumar, G Anil, Bazzacco, D, Bellato, M, Bortolato, D, Bednarczyk, P, Benzoni, G, Berti, L, Birkenbach, B, Bruyneel, B, Brambilla, S, Camera, F, Chavas, J, Cederwall, B, Charles, L, Ciemala, M, Cocconi, P, Coleman-Smith, P, Colombo, A, Corsi, A, Crespi, FCL, Cullen, DM, Czermak, A, Desesquelles, P, Doherty, DT, Dulny, B, Eberth, J, Farnea, E, Fornal, B, Franchoo, S, Gadea, A, Giaz, A, Gottardo, A, Grave, X, Grebosz, J, Gorgen, A, Gulmini, M, Habermann, T, Hess, H, Isocrate, R, Iwanicki, J, Jaworski, G, Judson, DS, Jungclaus, A, Karkour, N, Kmiecik, M, Karpinski, D, Kisielinski, M, Kondratyev, N, Korichi, A, Komorowska, M, Kowalczyk, M, Korten, W, Krzysiek, M, Lehaut, G, Leoni, S, Ljungvall, J, Lopez-Martens, A, Lunardi, S, Maron, G, Mazurek, K, Menegazzo, R, Mengoni, D, Merchan, E, Meczynski, W, Michelagnoli, C, Million, B, Myalski, S, Napoli, DR, Niikura, M, Obertelli, A, Ozmen, SF, Palacz, M, Prochniak, L, Pullia, A, Quintana, B, Rampazzo, G, Recchia, F, Redon, N, Reiter, P, Rosso, D, Rusek, K, Sahin, E, Salsac, M-D, Soderstrom, P-A, Stefan, I, Stezowski, O, Styczen, J, Theisen, Ch, Toniolo, N, Ur, CA, Wadsworth, R, Wasilewska, B, Wiens, A, Wood, JL, Wrzosek-Lipska, K, and Zieblinski, M

Published
2018

148. High-spin structure in the transitional nucleus 131Xe: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

Author

Kaya, L., Vogt, A., Reiter, P., Siciliano, M., Birkenbach, B., Blazhev, A., Coraggio, L., Teruya, E., Yoshinaga, N., Higashiyama, K., Arnswald, K., Bazzacco, D., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., de Angelis, G., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Fu, B., Gadea, A., Gargano, A., Giaz, A., Gorgen, A., Gottardo, A., Hadynska-Klek, K., Hess, H., Hetzenegger, R., Hirsch, R., Itaco, N., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, Tea, Montagnoli, G., Montanari, D., Muller-Gatermann, C., Napoli, D., Podolyak, Zs., Pollarolo, G., Pullia, A., Queiser, M., Recchia, F., Rosiak, D., Saed-Samii, N., Sahin, E., Scarlassara, F., Schneiders, D., Seidlitz, M., Siebeck, B., Smith, J. F., Soderstrom, P.-A., Stefanini, A. M., Steinbach, T., Stezowski, O., Szilner, Suzana, Szpak, B., Ur, C., Valiente-Dobon, J. J., Wolf, K., and Zell, K. O.

Subjects
multinucleon transfer, AGATA gamma array, Large-scale shell-model calculations, Physics
Abstract

The transitional nucleus 131Xe is investigated after multinucleon transfer in the 136Xe + 208Pb and 136Xe + 238U reactions employing the high-resolution Advanced γ -Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and as an elusive reaction product in the fusion-evaporation reaction 124Sn(11B,p3n) 131Xe employing the High-efficiency Observatory for γ -Ray Unique Spectroscopy (HORUS) γ -ray array coupled to a double-sided silicon strip detector at the University of Cologne, Germany. The level scheme of 131Xe is extended to 5 MeV. A pronounced backbending is observed at hω¯ ≈ 0.4 MeV along the negative-parity one-quasiparticle νh11/2(α = −1/2) band. The results are compared to the high-spin systematics of the Z = 54 isotopes and the N = 77 isotones. Large-scale shell-model calculations employing the PQM130, SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in 129−132Xe provide insight into the changing nuclear structure along the Xe chain towards the N = 82 shell closure. Proton occupancy in the π 0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon.

Published
2018

149. Millisecond 23/2(+) isomers in the N=79 isotones Xe-133 and Ba-135

Author

Kaya, L., Vogt, A., Reiter, P., Müller- Gatermann, C., Siciliano, M., Coraggio, L., Itaco, N., Gargano, A., Arnswald, K., Bazzacco, D., Birkenbach, B., Blazhev, A., Bracco, A., Bruyneel, B., Corradi, L., Crespi, F. C. L., de Angelis, G., Droste, M., Eberth, J., Farnea, E., Fioretto, E., Fransen, C., Gadea, A., Giaz, A., Görgen, A., Gottardo, A., Hadyńska-Klęk, K., Hess, H., Hetzenegger, R., Hirsch, R., John, P. R., Jolie, J., Jungclaus, A., Korten, W., Leoni, S., Lewandowski, L., Lunardi, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, Tea, Montagnoli, G., Montanari, D., Napoli, D., Podolyák, Zs., Pollarolo, G., Recchia, F., Rosiak, D., Saed-Samii, N., Şahin, E., Scarlassara, F., Seidlitz, M., Söderström, P.-A., Stefanini, A. M., Stezowski, O., Szilner, Suzana, Szpak, B., Ur, C., Valiente-Dobón, J. J., Weinert, M., Wolf, K., and Zell, K. O.

Subjects
nuclear spetroscopy, shell model
Abstract

Detailed information on isomeric states in A approximate to 135 nuclei is exploited to shell-model calculations in the region northwest of doubly magic nucleus Sn-132. The N = 79 isotones Xe-133 and Ba-135 are studied after multinucleon transfer in the Xe-136 + Pb- 208 reaction employing the high-resolution Advanced GAmma Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and in a pulsed- beam experiment at the FN tandem accelerator of the University of Cologne Germany utilizing a Be-9 + Te-130 fusion-evaporation reaction at a beam energy of 40 MeV. Isomeric states are identified via delayed gamma-ray spectroscopy. Hitherto tentative excitation energy spin and parity assignments of the 2017-keV J(pi) = 23/2(+) isomer in Xe-133 are confirmed and a half-life of T-1/2 = 8.64(13) ms is measured. The 2388-keV state in Ba-135. is identified as a J(pi) = 23/2(+) isomer with a half-life of 1.06(4) ms. The new results show a smooth onset of isomeric J(pi) = 23/2(+) states along the N = 79 isotones and close a gap in the high-spin systematics towards the recently investigated J(pi) = 23/2(+) isomer in Nd-139. The resulting systematics of M2 reduced transition probabilities is discussed within the of the nuclear shell model. Latest large-scale shell- model calculations employing the SN100PN, GCN50:82, SN100-KTH and a realistic effective interaction reproduce the experimental findings generally well and give insight into the structure of the isomers.

Published
2018
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150. Transition probabilities in neutron-rich 80, 82Se and the role of the νg9/2 orbital

Author

Litzinger, J., Blazhev, A., Dewald, A., Didierjean, F., Duchene, G., Fransen, C., Lozeva, R., Verney, D., de Angelis, G., Bazzacco, D., Birkenbach, B., Bottoni, S., Bracco, A., Braunroth, T., Cederwall, B., Corradi, L., Crespi, F. C. L., Desesquelles, P., Eberth, J., Ellinger, E., Farnea, E., Fioretto, E., Gernhauser, R., Goasduff, A., Gorgen, A., Gottardo, A., Grebosz, J., Hackstein, M., Hess, H., Ibrahim, F., Jolie, J., Jungclaus, A., Kolos, K., Korten, W., Leoni, S., Lunardi, S., Maj, A., Menegazzo, R., Mengoni, D., Michelagnoli, C., Mijatović, Tea, Million, B., Moller, O., Modamio, V., Montagnoli, G., Montanari, D., Morales, A. I., Napoli, D. R., Niikura, M., Pietralla, N., Pollarolo, G., Pullia, A., Quintana, B., Recchia, F., Reiter, P., Rosso, D., Sahin, E., Salsac, M. D., Scarlassara, F., Soderstrom, P.-A., Stefanini, A. M., Stezowski, O., Szilner, Suzana, Theisen, Ch., Valiente-Dobon, J. J., Vandone, V., and Vogt, A.

Subjects
nuclear structure, intermediate-spin yrast and non-yrast excitations, Physics
Abstract

Transition probabilities of intermediate-spin yrast and non-yrast excitations in 80, 82Se were investigated in a recoil distance Doppler-shift (RDDS) experiment performed at the Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro. The Cologne Plunger device for deep inelastic scattering was used for the RDDS technique and was combined with the AGATA Demonstrator array for the γ-ray detection and coupled to the PRISMA magnetic spectrometer for an event-by-event particle identification. In 80Se, the level lifetimes of the yrast (6+1) and (8+1) states and of a non-yrast band feeding the yrast 4+1 state are determined. A spin and parity assignment of the head of this sideband is discussed based on the experimental results and supported by large-scale shell-model calculations. In 82Se, the level lifetimes of the yrast 6+1 state and the yrare 4+2 state and lifetime limits of the yrast (10+1) state and of the 5−1 state are determined. Although the experimental results contain large uncertainties, they are interpreted with care in terms of large-scale shell-model calculations using the effective interactions JUN45 and jj44b. The excited states' wave functions are investigated and discussed with respect to the role of the neutron g9/2 orbital.

Published
2018
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