13–17 May 2019
Venice, Centro Culturale Don Orione Artigianelli
Europe/Rome timezone
NSD2019 Proceedings are now available online at www.epj-conferences.org

$\beta$ decay of neutron-rich $^{135}$In, $^{134}$In and $^{133}$In nuclei: $\gamma$ emission from neutron-unbound states in $^{134}$Sn and $^{133}$Sn

14 May 2019, 14:40
20m
SALA VIVALDI (Centro Culturale Don Orione Artigianelli)

SALA VIVALDI

Centro Culturale Don Orione Artigianelli

Speaker

Monika Piersa (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland)

Description

Experimental studies of nuclei far from stability provide guidance for further development of nuclear models. Simple systems in the proximity of the doubly-magic shell closures are the best cases for testing the predictive power of shell-model calculations. In this context, understanding of the nuclear structure in the closest proximity of the doubly-magic $^{132}$Sn is essential before making extrapolations of the nuclear properties towards more neutron-rich tin isotopes. In this work, the $\beta$ decay of $^{135}$In has been studied for the first time.

Excited states in $^{133}$Sn, $^{134}$Sn and $^{135}$Sn were investigated via $\beta$ decay of $^{133}$In, $^{134}$In and $^{135}$In at ISOLDE Decay Station. Isomer-selective ionization using RILIS enabled the $\beta$ decays of $^{133g}$In (I$^{\pi}$=9/2$^+$) and $^{133m}$In (I$^{\pi}$=1/2$^-$) to be studied independently for the first time. Thanks to the large spin difference of those two $\beta$-decaying states, it is possible to investigate separately the lower- and higher-spin states in the daughter $^{133}$Sn and thus to probe single-particle transitions relevant in the neutron-rich $^{132}$Sn region. Single-hole states in $^{133}$Sn were identified at energies exceeding neutron-separation energy up to 3.7 MeV. Due to centrifugal barrier hindering the neutron from leaving the nucleus, the contribution of electromagnetic decay of those unbound states was found to be significant. The same phenomenon was observed for a new neutron-unbound state identified in $^{134}$Sn. Preliminary results of the first $\beta$-decay studies of $^{135}$In were obtained. Comprehensive description of excited states in $^{133}$Sn and $^{134}$Sn was deduced from both $\beta$ and $\beta$n decay branches of indium isotopes.

Primary authors

Monika Piersa (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) J. Benito (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) A. Korgul (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) L. M. Fraile (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain)

Co-authors

E. Adamska (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) A. E. Barzakh (CERN, CH-1211 Geneva 23, Switzerland) G. Benzoni (Istituto Nazionale di Fisica Nucleare, Sezione di Milano, I-20133 Milano, Italy) T. Berry (Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom) M. J. G. Borge (Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain) M. Carmona (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) K. Chrysalidis (CERN, CH-1211 Geneva 23, Switzerland) J. G. Correia (CERN, CH-1211 Geneva 23, Switzerland) C. Costache (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) T. Day Goodacre (CERN, CH-1211 Geneva 23, Switzerland) H. De Witte (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) D. V. Fedorov (Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, 188300 Gatchina, Russia) V. N. Fedosseev (CERN, CH-1211 Geneva 23, Switzerland) G. Fernández-Martínez (Institut für Kernphysik, Technische Universität zu Darmstadt, 64289 Darmstadt, Germany) A. Fijałkowska (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) M. Fila (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) D. Galaviz (LIP, and Faculty of Sciences, University of Lisbon, 1000-149 Lisbon, Portugal) R. Grzywacz (Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA) C. Henrich (Institut für Kernphysik, Technische Universität zu Darmstadt, 64289 Darmstadt, Germany) M. Huyse (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) A. Illana (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) Z. Janas (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) K. Johnston (CERN, CH-1211 Geneva 23, Switzerland) V. Karanyonchev (Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany) M. Kicińska-Habior (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) R. Lica (CERN, CH-1211 Geneva 23, Switzerland) H. Mach (National Centre for Nuclear Research, BP1, PL 00-681 Warsaw, Poland) M. Madurga (Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA) I. Marroquín (Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain) B. Marsh (CERN, CH-1211 Geneva 23, Switzerland) M. C. Martínez (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) C. Mazzocchi (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) K. Miernik (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland) C. Mihai (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) B. Olaizola (Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1) S. Paulaskalas (Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA) S. Rothe (CERN, CH-1211 Geneva 23, Switzerland) J.-M. Régis (Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany) G. Simpson (Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS/Université Grenoble Alpes, Grenoble Cedex F-38026, France) Ch. Sotty (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) L. Stan (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) M. Stryjczyk (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) M. Stănoiu (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) V. Sánchez-Tembleque (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) A. Turturica (“Horia Hulubei” National Institute of Physics and Nuclear Engineering, RO-077125 Bucharest, Romania) J. M. Udías (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) P. Van Duppen (KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium) V. Vedia (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) A. Villa (Grupo de Física Nuclear and UPARCOS, Universidad Complutense de Madrid, CEI Moncloa, E-28040 Madrid, Spain) W. B. Walters (Department of Chemistry, University of Maryland, Maryland 20742, USA) R. Álvarez-Rodríguez (Escuela Tecnica Superior de Arquitectura, Universidad Politécnica de Madrid, E-28040 Madrid, Spain)

Presentation materials

There are no materials yet.