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33 results on '"KORGUL, A."'

1. First β -decay spectroscopy of In135 and new β -decay branches of In134

Author: Chiara Mazzocchi, Paul Greenlees, Robert Grzywacz, Marta Kicińska-Habior, Olof Tengblad, Jaime Benito, João Guilherme Martins Correia, Irene Marroquín Alonso, Jan Jolie, Maria Jose Garcia Borge, Aleksandra Fijałkowska, Alexandru Negret, James Cubiss, Zenon Janas, RAQUEL ALVAREZ RODRIGUEZ, Michal Silkowski, Agnieszka Korgul, Paula Ibáñez, Piet Van Duppen, Daniel Galaviz Redondo, Marek Stryjczyk, Ian Lazarus, Andres Illana Sison, Razvan Lica, Monika Piersa-Siłkowska, Thomas Day Goodacre, Miguel Garcia-Diez, Krzysztof Miernik, Panu Rahkila, and Florin ROTARU
Subjects: Physics, Nuclear physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, Spectroscopy, 01 natural sciences, Beta decay
Published: 2021
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2. β-delayed neutron emission of r-process nuclei at the N = 82 shell closure

Author: K. Matsui, Shintaro Go, G. G. Kiss, M. Labiche, C. J. Griffin, A. Estrade, Iris Dillmann, B. Rubio, Carlo Bruno, Robert Grzywacz, H. Baba, V. H. Phong, J. Ha, V. F. E. Pucknell, C. Domingo-Pardo, J. Agramunt, N. Nepal, A. Korgul, Shunji Nishimura, R. Yokoyama, P. J. Coleman-Smith, G. Cortes, H. Suzuki, J. L. Tain, L. J. Harkness-Brennan, D. W. Stracener, J. Liu, J. Liang, H. Takeda, Zi Hong Liu, D. S. Ahn, M. Wolińska-Cichocka, Y. Shimizu, A. I. Morales, Ariel Tarifeño-Saldivia, T. Davinson, L. H. Khiem, M. Piersa, N. Fukuda, P. J. Woods, Shigeru Kubono, F. Calviño, R. Caballero-Folch, K. Miernik, K. P. Rykaczewski, Alejandro Algora, A. Tolosa-Delgado, Hiroyoshi Sakurai, B. Moon, Fernando Montes, B.C. Rasco, A. Fijalkowska, T. Isobe, I.H. Lazarus, P.S. Morrall, Giuseppe Lorusso, D. Kahl, J. M. Allmond, S. Bae, N. T. Brewer, R. D. Page, Toshiyuki Sumikama, Matthew Mumpower, O. Hall, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Nuclear and High Energy Physics, National security, QC1-999, ß-delayed, Nuclear physics, Library science, Neutrons--Captura, β-delayed neutron emission, 7. Clean energy, 01 natural sciences, Neutrons--Capture, Astrophysical, 0103 physical sciences, European commission, r-processimportant, 010306 general physics, China, Nuclear Experiment, Neutron emissionr-process, Physics, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, business.industry, r-process, Chinese academy of sciences, beta-delayed neutron emission, Research council, Christian ministry, Física nuclear, National laboratory, business, Administration (government)
Abstract: This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. O.H, T.D, P.J.W, C.G.B, C.J.G and D.K would like to thank STFC, UK for support. This research was sponsored in part by the Office of Nuclear Physics, U.S. Department of Energy under Award No. DE-FG02-96ER40983 (UTK) and DEAC05-00OR22725 (ORNL), and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DENA0002132. This work was supported by National Science Foundation under Grants No. PHY-1430152 (JINA Center for the Evolution of the Elements), No. PHY-1565546 (NSCL), and No. PHY-1714153 (Central Michigan University). This work was supported by the Polish National Science Center under Contracts No. UMO-2015/18/E/ST2/00217, No. 2017/01/X/ST2/01144, No. 2019/33/N/ST2/03023 and No. 2020/36/T/ST2/00547. This work was also supported by JSPS KAKENHI (Grants No. 14F04808, No. 17H06090, No. 25247045, and No. 19340074). This work was also supported by Spanish Ministerio de Economia y Competitividad grants (FPA2011-06419, FPA2011-28770-C03-03, FPA2014-52823-C2-1-P, FPA2014-52823-C2-2-P, SEV-2014-0398, IJCI-2014-19172), by European Commission FP7/EURATOM Contract No. 605203, by the UK Science and Technology Facilities Council Grant No. ST/N00244X/1, by the National Research Foundation (NRF) in South Korea (No. 2016K1A3A7A09005575, No. 2015H1A2A1030275) and by the Natural Sciences and Engineering Research Council of Canada (NSERC) via the Discovery Grants SAPIN-2014-00028 and RGPAS 462257-2014. TRIUMF receives federal funding via a contribution agreement with the National Research Council Canada. This work was also supported by NKFIH (NN128072), and by the UNKP-20-5-DE-2 New National Excellence Program of the Ministry of Human Capacities of Hungary. G.G.K. acknowledges support from the Janos Bolyai research fellowship of the Hungarian Academy of Sciences. M.W.-C. acknowledges support from the Polish NCN project Miniatura No. 2017/01/X/ST2/01144. Z.L was supported by the National Key Research and Development Program of China (Contract No. 2018YFA0404402), the National Natural Science Foundation of China (Grants No. 11961141004, No. 11735017, No. 11675225 and No. 11635003) and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB34000000). M.R.M. performed this work under the auspice of the U.S. Department of Energy at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001).
Published: 2021
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3. Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82

Author: D. Verney, D. Ralet, J. Wiederhold, S. Bottoni, L. Matthieu, B. Fornal, A. Blazhev, P. H. Regan, C. Schmitt, R.L. Canavan, K. Rezynkina, D. Reygadas Tello, A. Lopez-Martens, K. Hauschild, B. Wasilewska, I. Matea, A. Korgul, C. Henrich, J. Jolie, V. Guadilla, M. Lebois, M. Babo, Th. Kröll, L. M. Fraile, J. Benito, G. Benzoni, T. Kurtukian-Nieto, L. Qi, Stephan Oberstedt, C. Porzio, M. Bunce, N. Warr, R. B. Gerst, P. A. Söderström, Y. Popovitch, W. Paulsen, F. Ibrahim, Ł. W. Iskra, G. Häfner, J. N. Wilson, S. Jazwari, M. S. Yavahchova, R. Chakma, C. Delafosse, A. Boso, R. Lozeva, N. Jovančević, V. Sanchez, H. Naïdja, M. Rudigier, P. Adsley, L. Le-meur, N. Cieplicka-Oryńczak, I. Homm, E. Adamska, G. Tocabens, K. Belvedere, D. Gjestvang, D. Thisse, M. L. Cortés, P. Koseoglou, P. Davies, V. Vedia, J. Nemer, M. Piersa, Muriel Fallot, C. Sürder, K. Miernik, S. M. Collins, S. Ziliani, D. Etasse, Fabio Zeiser, and J. Ljungvall
Subjects: Physics, Spectrometer, Isotope, 010308 nuclear & particles physics, Fission, Nuclear structure, Context (language use), 7. Clean energy, 01 natural sciences, Excited state, 0103 physical sciences, Neutron source, Atomic physics, 010306 general physics, Spectroscopy
Abstract: We report on spectroscopic information and lifetime measurements of even-even neutron-rich Te isotopes. Excited states were populated in fast-neutron induced fission of U238 at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid ν-ball spectrometer. We provide first results on lifetimes of the 61+ state in Te136 and the (61+), (41+), and (21+) states in Te138 and discuss the results in the context of large-scale shell-model calculations. The level schemes of Te136 and Te138 are revised in terms of lifetimes of their 21+,41+ states and updated information on the (42+) state in Te136 is presented. In addition, previously reported data on spectroscopy and lifetimes in Te134 are reexamined. This work provides new insights into the evolution of collectivity for Te isotopes with N=82,84,86.
Published: 2021
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4. Angular momentum generation in nuclear fission

Author: B. Fornal, M. S. Yavahchova, C. Delafosse, A. Boso, V. Sánchez-Tembleque, K. Rezynkina, M. Lebois, K. Hauschild, T. Kröll, Muriel Fallot, P. Adsley, J. Ljungvall, Ł. W. Iskra, F. Ibrahim, E. Adamska, C. Henrich, A. Gottardo, Stephan Oberstedt, R. Chakma, C. Sürder, V. Guadilla, C. Porzio, P. H. Regan, J. Benito, A. Korgul, R. Lozeva, L. Le Meur, M. Piersa, P. Ivanov, V. Vedia, J. Nemer, B. Wasilewska, N. Jovančević, Y. Popovitch, W. Paulsen, C. Schmitt, N. Cieplicka-Oryńczak, R. B. Gerst, Sunniva Siem, G. Tocabens, P. A. Söderström, K. Belvedere, S. Courtin, S. Ziliani, R. Canavan, D. Gjestvang, L. Qi, D. Etasse, P. Koseoglou, G. Häfner, I. Matea, I. Homm, M. Heine, L. M. Fraile, T. Kurtukian-Nieto, Fabio Zeiser, P. Davies, D. Thisse, M. L. Cortés, A. Blazhev, S. Jazrawi, M. Bunce, A. Lopez-Martens, K. Miernik, Alejandro Algora, M. Rudigier, J. N. Wilson, N. Warr, J. Wiederhold, D. Verney, D. Ralet, M. Babo, L. Gaudefroy, G. Benzoni, S. Bottoni, S. Leoni, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), University of Oslo (UiO), Department of Physics, University of Surrey, University of Surrey (UNIS), Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CEA, Bruyeres le Chatel, France, affiliation inconnue, University of Warsaw (UW), Facultat de Fisica [València] (UV), Universitat de València (UV), Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Università degli Studi di Milano = University of Milan (UNIMI), Institut für Kernphysik der Universität zu Köln, Universität zu Köln = University of Cologne, National Physical Laboratory [Teddington] (NPL), Instytut Fizyki Jądrowej PAN (IFJ), Polskiej Akademii Nauk, 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), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), University of Manchester [Manchester], Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), European Commission - Joint Research Centre [Geel] (JRC), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, ELI NP Dept, Reactorului Str 30, Magurele 077125, Romania, Софийски университет = Sofia University, Technische Universität Darmstadt (TU Darmstadt), Universidad Complutense de Madrid [Madrid] (UCM), Università degli studi di Milano [Milano], Universität zu Köln, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Technical University Darmstadt (TU), 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 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), University of Sofia, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Università degli Studi di Milano [Milano] (UNIMI), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Direction des Applications Militaires (DAM), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: Physics, [PHYS]Physics [physics], Angular momentum, Multidisciplinary, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Spins, 010308 nuclear & particles physics, Fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Nuclear fission, 0103 physical sciences, Atomic nucleus, Nuclear Experiment, 010306 general physics, Nucleon, Excitation, ComputingMilieux_MISCELLANEOUS, Spin-½
Abstract: When a heavy atomic nucleus splits (fission), the resulting fragments are observed to emerge spinning1; this phenomenon has been a mystery in nuclear physics for over 40 years2,3. The internal generation of typically six or seven units of angular momentum in each fragment is particularly puzzling for systems that start with zero, or almost zero, spin. There are currently no experimental observations that enable decisive discrimination between the many competing theories for the mechanism that generates the angular momentum4–12. Nevertheless, the consensus is that excitation of collective vibrational modes generates the intrinsic spin before the nucleus splits (pre-scission). Here we show that there is no significant correlation between the spins of the fragment partners, which leads us to conclude that angular momentum in fission is actually generated after the nucleus splits (post-scission). We present comprehensive data showing that the average spin is strongly mass-dependent, varying in saw-tooth distributions. We observe no notable dependence of fragment spin on the mass or charge of the partner nucleus, confirming the uncorrelated post-scission nature of the spin mechanism. To explain these observations, we propose that the collective motion of nucleons in the ruptured neck of the fissioning system generates two independent torques, analogous to the snapping of an elastic band. A parameterization based on occupation of angular momentum states according to statistical theory describes the full range of experimental data well. This insight into the role of spin in nuclear fission is not only important for the fundamental understanding and theoretical description of fission, but also has consequences for the γ-ray heating problem in nuclear reactors13,14, for the study of the structure of neutron-rich isotopes15,16, and for the synthesis and stability of super-heavy elements17,18. γ-ray spectroscopy experiments on the origin of spin in the products of nuclear fission of spin-zero nuclei suggest that the fission fragments acquire their spin after scission, rather than before.
Published: 2021
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5. First lifetime investigations of $N>82$ iodine isotopes: The quest for collectivity

Author: A. Korgul, J. Wiederhold, Th. Kröll, S. Leoni, P. Adsley, Muriel Fallot, M. Babo, J. Benito, G. Benzoni, V. Vedia, K. Miernik, L. Qi, J. Nemer, V. Guadilla, C. Sürder, S. Bottoni, D. Verney, S. Jazwari, N. Warr, A. Boso, K. Rezynkina, D. Ralet, J. Ljungvall, F. Ibrahim, L. M. Fraile, T. Kurtukian-Nieto, M. Lebois, Fabio Zeiser, R. Chakma, A. Blazhev, P. H. Regan, R. Lozeva, C. Schmitt, L. Matthieu, R.L. Canavan, M. Piersa-Siłkowska, A. Algora, N. Jovančević, J. N. Wilson, Y. Popovitch, N. Cieplicka-Oryńczak, W. Paulsen, E. Adamska, G. Tocabens, P. Davies, K. Belvedere, D. Gjestvang, S. M. Collins, S. Ziliani, D. Etasse, M. Bunce, C. Henrich, R. B. Gerst, A. Lopez-Martens, M. Rudigier, Ł. W. Iskra, G. Häfner, B. Wasilewska, Stephan Oberstedt, C. Porzio, P. A. Söderström, C. Delafosse, V. Sánchez-Tembleque, L. Le-meur, H. Naïdja, M. S. Yavahchova, P. Koseoglou, I. Homm, D. Thisse, M. L. Cortés, D. Reygadas Tello, K. Hauschild, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), 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 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), ILL, and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Isotope, 010308 nuclear & particles physics, Fission, chemistry.chemical_element, Context (language use), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Iodine, 01 natural sciences, chemistry, Excited state, 0103 physical sciences, Neutron source, Física nuclear, Atomic physics, 010306 general physics
Abstract: International audience; We report on spectroscopic information and lifetime measurements in the neutron-rich I135,137,139 isotopes. This is the first lifetime data on iodine isotopes beyond N=82. Excited states were populated in fast neutron-induced fission of U238 at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid ν-ball spectrometer. The level schemes of the I135,137,139 isotopes are revised in terms of excited states with up to maximum spin-parity of (33/2+), populated for the first time in fast neutron-induced fission. We provide first results on the lifetimes of the (9/21+) and (13/21+) states in I137 and I139, and the (17/21+) state in I137. In addition, we give upper lifetime limits for the (11/21+) states in I135−139, the (15/21+) state in I137, the (17/21+) state in I139, and reexamine the (29/21+) state in I137. The isomeric data in I135 are reinvestigated, such as the previously known (15/21+) and (23/21−) isomers with T1/2 of 1.64(14) and 4.6(7) ns, respectively, as obtained in this work. The new spectroscopic information is compared to that from spontaneous or thermal-neutron induced fission and discussed in the context of large scale shell-model (LSSM) calculations for the region beyond Sn132, indicating the behavior of collectivity for the three valence-proton iodine chain with N=82,84,86.
Published: 2021
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6. Prompt and delayed γ spectroscopy of neutron-rich Kr94 and observation of a new isomer

Author: R. Chakma, N. Cieplicka-Oryńczak, P. Adsley, G. Tocabens, Muriel Fallot, K. Belvedere, D. Gjestvang, L. Qi, J. Wiederhold, S. Leoni, C. Sürder, J. Benito, J. N. Wilson, K. Hauschild, R. B. Gerst, Stephan Oberstedt, Ł. W. Iskra, C. Porzio, P. A. Söderström, G. Häfner, M. Rudigier, I. Matea, C. Henrich, D. Verney, R.L. Canavan, K. Miernik, V. Vedia, D. Ralet, J. Nemer, P. Koseoglou, M. Piersa, N. Warr, R. Lozeva, L. Le Meur, A. Algora, M. Lebois, N. Jovančević, K. Rezynkina, S. Jazrawi, A. Blazhev, S. Courtin, M. Bunce, S. Bottoni, P. H. Regan, A. Boso, A. Lopez-Martens, C. Schmitt, B. Fornal, P. Ivanov, B. Wasilewska, L. M. Fraile, F. Ibrahim, M. Babo, T. Kurtukian-Nieto, A. Gottardo, G. Benzoni, T. Kröll, D. Reygadas-Tello, E. Adamska, J. Ljungvall, V. Guadilla, A. Korgul, Y. Popovitch, W. Paulsen, I. Homm, D. Thisse, M. L. Cortés, M. Heine, Fabio Zeiser, C. Delafosse, V. Sánchez-Tembleque, P. Davies, M. Yavachova, S. Ziliani, and D. Etasse
Subjects: Physics, Spectrometer, 010308 nuclear & particles physics, Fission, Astrophysics::High Energy Astrophysical Phenomena, Yrast, Nuclear Theory, 01 natural sciences, 7. Clean energy, Atomic orbital, Nuclear fission, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Spin (physics), Spectroscopy
Abstract: Prompt and delayed γ -ray spectroscopy of the neutron-rich 94 Kr was performed, as part of the fission campaign at the ALTO facility of the IPN Orsay, using the fast-neutron-induced fission reaction 238 U ( n , f ) in combination with the ν -Ball array, a novel hybrid γ spectrometer for energy and lifetime measurements. Several new yrast and nonyrast transitions were observed for the first time, extending the previously known level scheme. Additionally, we report on the observation of a new short-lived isomer at 3444 keV with a half-life of 32(3) ns. The analysis of the Nilsson orbitals obtained from Gogny cranked Hartree-Fock-Bogoliubov calculations suggests a ( 9 − ) spin and an oblate deformation for this isomer corresponding to a two-quasineutron state, indicating an isomeric structure very similar to that of the neighboring isotones 96 Sr and 92 Se
Published: 2020
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7. Mapping of fragmented νf5/2→πf7/2 transitions in the Co73→Ni73 decay

Author: K. P. Rykaczewski, K. Kolos, Carl J Gross, J. C. Batchelder, C. J. Prokop, Mustafa Rajabali, A. A. Ciemny, Sean Liddick, T. N. Ginter, S. Taylor, Y. Xiao, S. V. Paulauskas, Shintaro Go, Thomas Baumann, Robert Grzywacz, C. Mazzocchi, M. Al-Shudifat, and A. Korgul
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, State (functional analysis), 7. Clean energy, 01 natural sciences, Superconducting cyclotron, Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Energy (signal processing), Excitation
Abstract: Excited states in ${}^{73,75}\mathrm{Ni}$ were investigated through the $\ensuremath{\beta}$ decay of ${}^{73,75}\mathrm{Co}$ in an experiment performed at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU). The experimental results extended the level scheme of $^{73}\mathrm{Ni}$ to 3.2-MeV excitation energy and provided the experimental information on excited states in $^{75}\mathrm{Ni}$. The $\ensuremath{\beta}$-delayed neutron branching ratio for $^{73}\mathrm{Co}$ was obtained. The experimental results are discussed in comparison with shell-model calculations.
Published: 2020
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8. Detailed spectroscopy of doubly magic Sn 132

Author: Benito, J., Fraile, L. M., Korgul, A., Piersa, M., Adamska, E., Andreyev, A. N., Álvarez-Rodríguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J.G., Carmona, M., Chrysalidis, K., Costache, C., Cubiss, J. G., Day Goodacre, T., De Witte, H., Fedorov, D. V., Fedosseev, V. N., Fernández-Martínez, G., Fijałkowska, A., Fila, M., Fynbo, H., Galaviz, D., Galve, P., García-Díez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibáñez, P., Illana, A., Janas, Z., Jolie, J., Judson, D. S., Karayonchev, V., Kicińska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I., Licǎ, R., López-Montes, A., Lund, M., Mach, H., Madurga, M., Marroquín, I., Marsh, B., Martínez, M. C., Mazzocchi, C., Mǎrginean, N., Mǎrginean, R., Miernik, K., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Olaizola, B., Page, R. D., Paulauskas, S. V., Pascu, S., Perea, A., Pucknell, V., Rahkila, P., Raison, C., Rapisarda, E., Régis, J. M., Rezynkina, K., Rotaru, F., Rothe, S., Sánchez-Parcerisa, D., Sánchez-Tembleque, V., Schomacker, K., Simpson, G. S., Sotty, Ch, Stan, L., Stǎnoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udías, J. M., Van Duppen, P., Vedia, V., Villa-Abaunza, A., Viñals, S., Walters, W. B., Wadsworth, R., Warr, N., European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), National Science Centre (Poland), Federal Ministry of Education and Research (Germany), Institute of Atomic Physics (Romania), Science and Technology Facilities Council (UK), Research Foundation - Flanders, Universidad Complutense de Madrid, and Helsinki Institute of Physics
Subjects: Physics, 010308 nuclear & particles physics, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, Beta decay, 114 Physical sciences, Nuclear physics, Excited state, 0103 physical sciences, Level structure, Beta (velocity), Física nuclear, MAGIC (telescope), 010306 general physics, Spectroscopy, Delayed neutron
Abstract: 18 pags., 11 figs., 4 tabs., The structure of the doubly magic Sn8250132 has been investigated at the ISOLDE facility at CERN, populated both by the β-decay of In132 and β - delayed neutron emission of In133. The level scheme of Sn132 is greatly expanded with the addition of 68 γ transitions and 17 levels observed for the first time in the β decay. The information on the excited structure is completed by new γ transitions and states populated in the β-n decay of In133. Improved delayed neutron emission probabilities are obtained both for In132 and In133. Level lifetimes are measured via the advanced time-delayed βγγ(t) fast-timing method. An interpretation of the level structure is given based on the experimental findings and the particle-hole configurations arising from core excitations both from the N = 82 and Z = 50 shells, leading to positive- and negative-parity particle-hole multiplets. The experimental information provides new data to challenge the theoretical description of Sn132., We acknowledge the support of the ISOLDE Collaboration and the ISOLDE technical teams, and by the European Union Horizon 2020 research and innovation programme under Grant Agreement No. 654002. This work was partially funded by the Spanish government via Projects No. FPA2015- 65035-P, No. FPA-64969-P, No. FPA2017-87568-P, and No. RTI2018-098868-B-I00; the Polish National Science Center under Contracts No. UMO-2015/18/E/ST2/00217, No. UMO-2015/18/M/ST2/00523, and No. UMO2019/33/N/ST2/03023; the Portuguese FCT via CERN/FIS-NUC/0004/2015 project; the German BMBF under Contract No. 05P18PKCIA; the Romanian IFA Grant CERN/ISOLDE; and by grants from the U.K. Science and Technology Facilities Council, the Research Foundation Flanders (FWO, Belgium), the Excellence of Science program (EOS, FWO-FNRS, Belgium), and the GOA/2015/010 (BOF KU Leuven). J.B. acknowledges support from the Universidad Complutense de Madrid under the Predoctoral Grant No. CT27/16-CT28/16
Published: 2020
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9. Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga86,87

Author: G. Cortes, L. J. Harkness-Brennan, X. X. Xu, Robert Grzywacz, K. Matsui, G. G. Kiss, A. Algora, C. Domingo-Pardo, H. Takeda, D. S. Ahn, K. P. Rykaczewski, Mustafa Rajabali, J. Simpson, C. J. Griffin, M. Singh, Y. Saito, K. Miernik, P. J. Woods, Shigeru Kubono, Le Hong Khiem, D. W. Stracener, Jun Liang, M. Karny, N. Nepal, A. Korgul, R. Caballero-Folch, T. Isobe, M. Wolińska-Cichocka, Hiroyoshi Sakurai, P. J. Coleman-Smith, H. Baba, V. H. Phong, A. I. Morales, T. T. King, S.L. Thomas, Toshiyuki Sumikama, Fernando Montes, Joseph Heideman, Ariel Tarifeño-Saldivia, M. Prydderch, I.H. Lazarus, J. Ha, A. Estrade, H. Suzuki, M. Piersa, N. Fukuda, F. Calviño, Jorge Agramunt, R. Yokoyama, B. C. Rasco, Shintaro Go, J. M. Allmond, J. L. Tain, Rebecca Surman, Giuseppe Lorusso, S. Bae, D. Kahl, Berta Rubio, O. Hall, M. Madurga, Toshihiko Kawano, P. Morrall, N. T. Brewer, R. D. Page, M. Labiche, JJ Liu, V. F. E. Pucknell, A. Tolosa-Delgado, Y. Shimizu, Shunji Nishimura, Iris Dillmann, T. Davinson, and C. G. Bruno
Subjects: Physics, Nuclear physics, 010308 nuclear & particles physics, Neutron emission, 0103 physical sciences, Nuclear structure, r-process, Neutron, 010306 general physics, 01 natural sciences, Delayed neutron, Beta decay, 3. Good health
Abstract: Aquesta es una copia de la versio author’s final draft d'un article publicat a la revista [Physical Review C ]. URL d'aquest document a UPCommons E-prints: http://hdl.handle.net/2117/174873
Published: 2019
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10. $\gamma$-ray Spectroscopy of $^{85}$Se Produced in $^{232}$Th Fission

Author: I. Homm, M. Ciemała, Stephan Oberstedt, K. Rezynkina, P. A. Söderström, B. Fornal, A. Lopez-Martens, M. Bunce, V. Vedia, D. Verney, J. N. Wilson, J. Nemer, B. Wasilewska, A. Algora, M. Babo, R. B. Gerst, L. M. Fraile, Y. Popovitch, R. Chakma, T. Kurtukian-Nieto, Ł. W. Iskra, W. Paulsen, E. Adamska, D. Ralet, G. Häfner, M. Piersa, G. Benzoni, M. Rudigier, A. Fijałkowska, A. Blazhev, S. Leoni, D. Reygadas Tello, K. Hauschild, P. H. Regan, M. S. Yavahchova, J. Wiederhold, V. Guadilla, N. Warr, C. Delafosse, C. Schmitt, R.L. Canavan, V. Sánchez-Tembleque, K. Miernik, R. Lozeva, I. Matea, P. Davies, Muriel Fallot, N. Jovančević, S. Bottoni, M. Lebois, N. Cieplicka-Oryńczak, P. Adsley, C. Henrich, G. Tocabens, K. Belvedere, D. Gjestvang, T. Kröll, L. Cortes, C. Sürder, L. Qi, S. M. Collins, D. Etasse, M. Heine, Fabio Zeiser, A. Boso, F. Ibrahim, J. Benito, A. Korgul, J. Ljungvall, D. Thisse, L. Le-meur, A. Gottardo, P. Koseoglou, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (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), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Institut Pluridisciplinaire Hubert Curien (IPHC), 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 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), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), 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), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)
Subjects: Physics, Spectrometer, Isotope, 010308 nuclear & particles physics, Fission, Yrast, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Aucun, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Excited state, 0103 physical sciences, Neutron source, Gamma spectroscopy, Nuclear Experiment
Abstract: International audience; Excited states in the neutron-rich 85Se nucleus have been studied using for the first time a fast neutron-induced fission of 232Th. The experiment was performed at the ALTO facility of the IPN Orsay. Coupling of the LICORNE directional neutron source with the ν-ball high-resolution γ-ray spectrometer provided unique access to high-spin states in neutron-rich fission fragments from the 232Th(n, f) reaction. A preliminary level scheme of 85Se was established by the analysis of prompt γ–γ–γ coincidences. Identification of the all known yrast states in 85Se is the first step towards studies of more neutron-rich Se isotopes.
Published: 2019
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11. Observation of a μs isomer in In8549134 : Proton-neutron coupling 'southeast' of Sn8250132

Author: M. Wolińska-Cichocka, Ana Isabel Morales, J. M. Allmond, Y. Shimizu, V. H. Phong, Shunji Nishimura, L. H. Khiem, G. G. Kiss, P. J. Woods, Shigeru Kubono, T. Isobe, Alfredo Estrade, Hiroyoshi Sakurai, A. Jungclaus, Z. Y. Xu, T. Davinson, Bertis Rasco, D. W. Stacener, Giuseppe Lorusso, G. Cortes, L. J. Harkness-Brennan, A. Boso, N. T. Brewer, Carlo Bruno, Iris Dillmann, P. H. Regan, D. Kahl, Toshiyuki Sumikama, F. Calviño, Alejandro Algora, Ariel Tarifeño-Saldivia, H. Suzuki, R. Caballero-Folch, K. Miernik, Cenxi Yuan, H. Takeda, D. S. Ahn, Robert Grzywacz, J. L. Tain, J. Liu, H. Baba, Shintaro Go, César Domingo Pardo, K. Matsui, C. J. Griffin, Fernando Montes, Jorge Agramunt, Victor Vaquero, N. Nepal, A. Korgul, K. P. Rykaczewski, A. Gargano, M. Piersa, R. Shearman, R. Yokoyama, O. Hall, Zs. Podolyák, and A. Tolosa-Delgado
Subjects: Physics, Coupling, Proton, 010308 nuclear & particles physics, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, 01 natural sciences
Published: 2019
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12. β decay of In133 : γ emission from neutron-unbound states in Sn133

Author: Robert Grzywacz, B. A. Marsh, J. G. Correia, M. Fila, L. M. Fraile, D. V. Fedorov, C. Costache, R. Lica, K. Chrysalidis, J. M. Udías, L. J. Harkness-Brennan, A. Turturica, S. Pascu, William B. Walters, Z. Janas, S. Viñals, S. Paulaskalas, Miguel Madurga, B. Olaizola, J. Benito, G. S. Simpson, A. Villa, R. Mărginean, V. N. Fedosseev, Henryk Mach, J. Kurcewicz, K. Miernik, V. F. E. Pucknell, C. Henrich, Joonas Konki, L. Stan, C. Mazzocchi, F. Rotaru, Ángel Perea, J.-M. Régis, C. Sotty, M. Kicińska-Habior, Robert Page, T. Day Goodacre, M. Carmona, A. Fijałkowska, E. Rapisarda, María José García Borge, A. E. Barzakh, R. Álvarez-Rodríguez, Sebastian Rothe, J. G. Cubiss, Paul Greenlees, C. Mihai, A. Illana, A. N. Andreyev, P. Rahkila, V. Vedia, A. Korgul, Marc Huyse, V. Sánchez-Tembleque, D. Galaviz, M. Stryjczyk, M. C. Martínez, H. De Witte, E. Adamska, I.H. Lazarus, N. Marginean, T. Berry, A. Negret, G. Fernández-Martínez, Enrique Nácher, N. Warr, H. O. U. Fynbo, Olof Tengblad, G. Benzoni, Karl Johnston, P. Van Duppen, M. Stanoiu, D. S. Judson, I. Marroquín, R. Wadsworth, V. Karanyonchev, and M. Piersa
Subjects: Physics, Spin states, 010308 nuclear & particles physics, Gamma ray, 01 natural sciences, 7. Clean energy, Beta decay, Ion source, 3. Good health, Ionization, Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Ground state
Abstract: Excited states in Sn-133 were investigated through the beta decay of In-133 at the ISOLDE facility. The ISOLDE Resonance Ionization Laser Ion Source (RILIS) provided isomer-selective ionization for In-133, allowing us to study separately, and in detail, the beta-decay branch of In-133 J(pi)= (9/2(+)) ground state and its J(pi) = (1/2(-)) isomer.Thanks to the large spin difference of the two beta-decaying states of In-133, it is possible to investigate separately the lower and higher spin states in the daughter, Sn-133, and thus to probe independently different single-particle and single-hole levels. We report here new gamma transitions observed in the decay of In-133, including those assigned to the deexcitation of the neutron-unbound states.
Published: 2019
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13. Time Projection Chamber (TPC) Detectors for Nuclear Astrophysics Studies With Gamma Beams

Author: S. S. Henshaw, K. Tittelmeier, Ying Wu, Deran Schweitzer, D. L. Balabanski, Moshe Gai, A. Korgul, Catalin Matei, C. Mazzocchi, L. S. Myers, Martin Freer, M. Pfützner, Sarah Stern, M. Zaremba, H. R. Weller, S. Stave, Robin Smith, A. Fijałkowska, Ioana Gheorghe, M. W. Ahmed, Jan Stefan Bihałowicz, R. Dabrowski, L. Janiak, Jonathan Mueller, W. Dominik, Volker Dangendorf, N. V. Zamfir, Amos Breskin, Z. Janas, T. Matulewicz, Ovidiu Tesileanu, C. R. Howell, M. Cwiok, Henryk Czyrkowski, A.H. Young, and Changchun Sun
Subjects: Active target, Physics, Nuclear and High Energy Physics, Time projection chamber, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Nuclear engineering, Detector, FOS: Physical sciences, chemistry.chemical_element, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, chemistry, 0103 physical sciences, Nuclear astrophysics, Nuclear Experiment (nucl-ex), Current (fluid), 010306 general physics, Instrumentation, Nuclear Experiment, Helium
Abstract: Gamma-Beams at the HIgS facility in the USA and anticipated at the ELI-NP facility, now constructed in Romania, present unique new opportunities to advance research in nuclear astrophysics; not the least of which is resolving open questions in oxygen formation during stellar helium burning via a precise measurement of the 12C(a,g) reaction. Time projection chamber (TPC) detectors operating with low pressure gas (as an active target) are ideally suited for such studies. We review the progress of the current research program and plans for the future at the HI{\gamma}S facility with the optical readout TPC (O-TPC) and the development of an electronic readout TPC for the ELI-NP facility (ELITPC)., Comment: Contribution Symposium on Radiation Measurements and Applications (SORMA XVII), June 11 - June 14 , 2018, University of Michigan, Ann Arbor
Published: 2018

14. Updated β -decay measurement of neutron-rich Cu74

Author: E. F. Zganjar, Carl J Gross, Mustafa Rajabali, A. J. Mendez, Robert Grzywacz, Durga Siwakoti, M. Madurga, Lucia Cartegni, K. Miernik, Umesh Silwal, S. W. Padgett, Marzena Wolinska-Cichocka, C. R. Bingham, C. Jost, D. W. Stracener, J. C. Batchelder, C. Mazzocchi, Yuan Liu, W. Krolas, A. A. Ciemny, N. T. Brewer, K. P. Rykaczewski, D.W. Miller, K. Kolos, J. L. Tracy, A. Korgul, A. Fijałkowska, Bertis Rasco, Stan Paulauskas, M. Karny, and J. A. Winger
Subjects: Nuclear physics, Physics, 010308 nuclear & particles physics, 0103 physical sciences, Neutron, 010306 general physics, 01 natural sciences
Published: 2018
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15. β -delayed neutron emission from Ga85

Author: K. P. Rykaczewski, David Miller, D. W. Stracener, Carl J Gross, E. F. Zganjar, A. J. Mendez, Yuan Liu, J. A. Winger, C. Mazzocchi, Robert Grzywacz, Marzena Wolinska-Cichocka, J. C. Batchelder, N. T. Brewer, M. Madurga, K. Miernik, A. Korgul, and S. V. Paulauskas
Subjects: Physics, Decay scheme, Ion beam, 010308 nuclear & particles physics, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, Ion source, 0103 physical sciences, Beta (velocity), Atomic physics, 010306 general physics, Spectroscopy, Delayed neutron, Beam (structure)
Abstract: Decay of $^{85}\mathrm{Ga}$ was studied by means of $\ensuremath{\beta}$-neutron-$\ensuremath{\gamma}$ spectroscopy. A pure beam of $^{85}\mathrm{Ga}$ was produced at the Holifield Radioactive Ion Beam Facility using a resonance ionization laser ion source and a high-resolution electromagnetic separator. The $\ensuremath{\beta}$-delayed neutron emission probability was measured for the first time, yielding 70(5)%. An upper limit of 0.1% for $\ensuremath{\beta}$-delayed two-neutron emission was also experimentally established for the first time. A detailed decay scheme including absolute $\ensuremath{\gamma}$-ray intensities was obtained. Results are compared with theoretical $\ensuremath{\beta}$-delayed emission models.
Published: 2018
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16. Investigation of low-lying states in 133sn populated in the - Decay of 133in using isomer-selective laser ionization

Author: A. Villa, T. Berry, M. J. G. Borge, V. Sánchez-Tembleque, A. Illana, M. Carmona, B. A. Marsh, M. Stanoiu, C. Costache, L. M. Fraile, G. Correia, S. Paulaskalas, G. Fernández-Martínez, R. Álvarez, V. Karanyonchev, M. Stryjczyk, M. Madurga, W. B. Walters, C. Martínez, K. Chrysalidis, T. Day Goodacre, M. Piersa, G. S. Simpson, A. Turturica, G. Benzoni, M. Kicinska-Habior, A. E. Barzakh, D. V. Fedorov, D. Galaviz, V. Vedia, M. Fila, C. Henrich, R. E. Mihai, J. Benito, Sebastian Rothe, J. M. Udías, Karl Johnston, L. Stan, Robert Grzywacz, E. Adamska, I. Marroquin, A. Korgul, K. Miernik, B. Olaizola, V. N. Fedosseev, C. Mazzocchi, Z. Janas, Ch. Sotty, R. Lica, J.-M. Régis, National Science Centre (Poland), Fundação para a Ciência e a Tecnologia (Portugal), SCOAP, Ministerio de Economía y Competitividad (España), 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)
Subjects: Physics, Isotope, 010308 nuclear & particles physics, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Laser, 01 natural sciences, Beta decay, 3. Good health, law.invention, law, Ionization, Excited state, 0103 physical sciences, Física nuclear, Beta (velocity), Atomic physics, 010306 general physics
Abstract: 6 pags., 3 figs. -- Open Access funded by Creative Commons Atribution Licence 4.0. -- Presented at the XXXV Mazurian Lakes Conference on Physics, Piaski, Poland, September 3–9, 2017., Excited states in the neutron-rich isotope 133Sn were studied via the ß decay of 133In. Isomer selective ionization using the ISOLDE RILIS enabled the ß decays of 133Ings (I¿ = 9=2+) and 133mIn (II¿ = 1=2-) to be studied independently for the first time. A description of the experimental setup at the ISOLDE Decay Station is presented together with preliminary results from the experiment., This work was supported in part by the National Science Centre, Poland (NCN) under contracts No. UMO-2015/18/E/ST2/00217 and No. UMO- 2015/18/M/ST2/00523, by the Spanish MINECO via FPA2015-65035-P project and by the Portuguese FCT via CERN/FIS-NUC/0004/2015 project.
Published: 2018
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17. Experimental study of the β decay of the very neutron-rich nucleus Ge85

Author: S. Padgett, K. P. Rykaczewski, C. Jost, M. Piersa, S. V. Paulauskas, E. F. Zganjar, D. W. Stracener, A. J. Mendez, C. Mazzocchi, M. Stryjczyk, M. Madurga, M. Karny, Carl J Gross, Marzena Wolinska-Cichocka, C. R. Bingham, N. T. Brewer, K. Miernik, David Miller, Robert Grzywacz, and A. Korgul
Subjects: Physics, 010308 nuclear & particles physics, Fission, Isotone, Nuclear Theory, 01 natural sciences, Nuclear physics, medicine.anatomical_structure, 0103 physical sciences, medicine, Neutron, Nuclear Experiment, 010306 general physics, Nucleus
Abstract: The $\ensuremath{\beta}$-decay properties of the very neutron-rich nucleus $^{85}\mathrm{Ge}$, produced in the proton-induced fission of $^{238}\mathrm{U}$, were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. The level scheme of $\phantom{\rule{0.16em}{0ex}}_{33}^{85}\mathrm{As}_{52}$ populated in $^{85}\mathrm{Ge}\phantom{\rule{4pt}{0ex}}\ensuremath{\beta}\ensuremath{\gamma}$ decay was reconstructed and compared to shell-model calculations. The investigation of the systematics of low-energy levels in $N=52$ isotones together with shell-model analysis allowed us to provide an estimate of the low-energy structure of the more exotic $N=52$ isotone $^{81}\mathrm{Cu}$.
Published: 2017
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18. Ultrafast-timing lifetime measurements in Ru94 and Pd96 : Breakdown of the seniority scheme in N=50 isotones

Author: H. Mach, A. Korgul, M. Górska, H. Grawe, I. Matea, M. Stănoiu, L. M. Fraile, Yu. E. Penionzkevich, F. De Oliviera Santos, D. Verney, S. Lukyanov, B. Cederwall, A. Covello, Z. Dlouhý, B. Fogelberg, G. De France, A. Gargano, G. Georgiev, R. Grzywacz, A. F. Lisetskiy, J. Mrazek, F. Nowacki, W. A. Płóciennik, Zs. Podolyák, S. Ray, E. Ruchowska, M.-G. Saint-Laurent, M. Sawicka, Ch. Stodel, and O. Tarasov
Subjects: Physics, European community, 010308 nuclear & particles physics, Research council, 0103 physical sciences, Seniority, Atomic physics, 010306 general physics, 01 natural sciences, Ultrashort pulse
Abstract: Swedish Research Council; European Community [HPRI-CT 1999-00019]; Spanish MINECO [FPA2015-65035-P]
Published: 2017
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19. High-sensitivity study of levels in Al30 following β decay of Mg30

Author: T. Kröll, R. Boutami, A. Korgul, Ulli Köster, C. Jollet, Thomas Nilsson, F. Maréchal, Olof Tengblad, Henryk Mach, W. Schwerdtfeger, H. O. U. Fynbo, J. Benito, Henrik B. Jeppesen, E. Ruchowska, W. Kurcewicz, P. G. Thirolf, J. Mrazek, L. M. Fraile, M. Stanoiu, G. S. Simpson, P. A. Butler, Z. Dlouhy, P. Hoff, W. Plociennik, Ari Jokinen, B. Olaizola, M. Sewtz, R. Schuber, Deyan Yordanov, S. Hyldegaard, and M. J. G. Borge
Subjects: Physics, 010308 nuclear & particles physics, 01 natural sciences, Beta decay, Gamma gamma, Excited state, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Beta (finance), Spectroscopy, Sensitivity (electronics), Excitation
Abstract: gamma-ray and fast-timing spectroscopy were used to study levels in Al-30 populated following the beta(-) decay of Mg-30. Five new transitions and three new levels were located in Al-30. A search was made to identify the third 1(+) state expected at an excitation energy of similar to 2.5 MeV. Two new levels were found, at 3163.9 and 3362.5 keV, that are firm candidates for this state. Using the advanced time-delayed (ATD) beta gamma gamma (t) method we have measured the lifetime of the 243.8-keV state to be T-1/2 = 15(4) ps, which implies that the 243.8-keV transition is mainly of M1 character. Its fast B(M1; 2(+) -> 3(+)) value of 0.10(3) W.u. is in very good agreement with the USD shell-model prediction of 0.090 W.u. The 1801.5-keV level is the only level observed in this study that could be a candidate for the second excited 2(+) state.
Published: 2016
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20. β-decay study ofKr94

Author: Robert Grzywacz, E. F. Zganjar, K. P. Rykaczewski, J. A. Winger, S. Padgett, Carl J Gross, S. V. Paulauskas, Marzena Wolinska-Cichocka, N. T. Brewer, K. Miernik, David Miller, W. Królas, A. J. Mendez, A. Korgul, Lucia Cartegni, M. Madurga, M. Karny, J. C. Batchelder, A. Fijałkowska, D. W. Stracener, and C. Mazzocchi
Subjects: Physics, 010308 nuclear & particles physics, Krypton, Nuclear structure, chemistry.chemical_element, 01 natural sciences, Isotopes of rubidium, Isotopes of strontium, chemistry, 0103 physical sciences, Level structure, Beta (velocity), Physics::Atomic Physics, Nuclide, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy
Abstract: $\ensuremath{\beta}$ decay of neutron-rich nuclide $^{94}\mathrm{Kr}$ was reinvestigated by means of a high resolution on-line mass separator and $\ensuremath{\beta}\ensuremath{-}\ensuremath{\gamma}$ spectroscopy. In total 22 $\ensuremath{\gamma}$-ray transitions were assigned to the decay of $^{94}\mathrm{Kr}$, and a new isomeric state was identified. The new information allows us to build detailed levels systematics in a chain of odd-odd rubidium isotopes and draw conclusions on nuclear structure for some of the observed states. The discussed level structure affects the evolution of $\ensuremath{\beta}$-decay half-lives for neutron-rich selenium, krypton, and strontium isotopes.
Published: 2016
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21. βandβ−ndecay of the neutron-richGe84nucleus

Author: Carl J Gross, K. P. Rykaczewski, Marzena Wolinska-Cichocka, E. F. Zganjar, Robert Grzywacz, M. Piersa, A. J. Mendez, Stan Paulauskas, M. Karny, C. Mazzocchi, D.W. Miller, S. W. Padgett, C. Jost, D. W. Stracener, A. Korgul, M. Madurga, M. Stryjczyk, C. R. Bingham, K. Miernik, A. A. Ciemny, and N. T. Brewer
Subjects: Nuclear physics, Physics, 010308 nuclear & particles physics, 0103 physical sciences, Neutron, 010306 general physics, 01 natural sciences
Published: 2016
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22. Reexamining Gamow-Teller decays nearNi78

Author: A. V. Ramayya, Robert Grzywacz, Carl J Gross, C. Jost, K. P. Rykaczewski, D. W. Stracener, Lucia Cartegni, J. K. Hwang, S. Padgett, E. F. Zganjar, S. H. Liu, J. H. Hamilton, S. V. Ilyushkin, A. Fijałkowska, Ivan Borzov, Stan Paulauskas, J. A. Winger, D.W. Miller, M. Karny, M. Madurga, K. Miernik, C. Mazzocchi, M. Al-Shudifat, A. J. Mendez, Rebecca Surman, A. Korgul, N. T. Brewer, W. Krolas, Marzena Wolinska-Cichocka, C. R. Bingham, and J. C. Batchelder
Subjects: Physics, 010308 nuclear & particles physics, Fission, Branching fraction, Nuclear Theory, 0103 physical sciences, Neutron, Atomic physics, 010306 general physics, Spectroscopy, 01 natural sciences, Mass separation, Excitation
Abstract: Decays of neutron-rich nuclei $^{82,83}\mathrm{Zn}$ and $^{82,83}\mathrm{Ga}$ produced in proton-induced fission of $^{238}\mathrm{U}$ were studied at the Holifield Radioactive Ion Beam Facility using on-line mass separation and $\ensuremath{\beta}\text{\ensuremath{-}}\ensuremath{\gamma}$ spectroscopy techniques. New $\ensuremath{\gamma}$-ray transitions were identified and level schemes, which include states at high excitation energies in the range between 3--7 MeV were constructed. These high-energy levels were identified to be populated through allowed Gamow-Teller $\ensuremath{\beta}$ transitions, and their structure was interpreted with new shell-model calculations. A $\ensuremath{\beta}$-delayed neutron branching ratio of $69\ifmmode\pm\else\textpm\fi{}7%$ was deduced for $^{82}\mathrm{Zn}$ and revised $\ensuremath{\beta}$-decay half-life values of $^{82}\mathrm{Zn}$ [155(17)(20) ms] and $^{83}\mathrm{Zn}$ [122(28) ms] were determined.
Published: 2016
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23. Fast-timing study of thel-forbidden1/2+→3/2+ M1transition inSn129

Author: Paul Greenlees, Luigi Coraggio, Pieter Bomans, Olof Tengblad, Mailyn Pérez Liva, Victoria Vedia, Irene Marroquín Alonso, Maria Jose Garcia Borge, Liam Paul Gaffney, Marie Vidal, Luis M Fraile, Alexandru Negret, Stefan Lalkovski, Joonas Konki, Agnieszka Korgul, Freddy FLAVIGNY, Paula Ibáñez, Piet Van Duppen, Esteban Picado-Sandí, Ian Lazarus, Jacobus Andreas Swartz, Razvan Lica, Enrique Nacher, Ana Isabel Morales López, Janne Pakarinen, Panu Rahkila, Angel Perea Martinez, and Florin ROTARU
Subjects: Physics, Large Hadron Collider, 010308 nuclear & particles physics, Operator (physics), State (functional analysis), 01 natural sciences, Nuclear physics, Renormalization, 0103 physical sciences, Neutron, Beta (velocity), Atomic physics, 010306 general physics, Ground state, Spectroscopy
Abstract: The levels in Sn-129 populated from the beta(-) decay of In-129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2(+) state and the 3/2(+) ground state in 129Sn are expected to have configurations dominated by the neutron s(1/2) (l = 0) and d(3/2) (l = 2) single-particle states, respectively. Consequently, these states should be connected by a somewhat slow l-forbidden M1 transition. Using fast-timing spectroscopy we havemeasured the half-life of the 1/2(+) 315.3-keV state, T-1/2 = 19(10) ps, which corresponds to a moderately fast M1 transition. Shell-model calculations using the CD-Bonn effective interaction, with standard effective charges and g factors, predict a 4-ns half-life for this level. We can reconcile the shell-model calculations to the measured T-1/2 value by the renormalization of the M1 effective operator for neutron holes.
Published: 2016
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24. First measurement of 60Ge $\beta$ -decay

Author: M. Cwiok, T. N. Ginter, Robert Grzywacz, K. Miernik, A. A. Bezbakh, Chandana Sumithrarachchi, M. Kuich, Thomas Baumann, D. Bazin, Sean Liddick, G. Kamiński, A. A. Ciemny, Benjamin P. Crider, Y. Xiao, C. Mazzocchi, E. Kwan, A. Korgul, M. Pomorski, J. Pereira, S. V. Paulauskas, K. Kolos, K. P. Rykaczewski, W. Dominik, M. Pfützner, Z. Janas, and Shintaro Go
Subjects: Physics, Nuclear and High Energy Physics, Time projection chamber, Isotopes of germanium, 010308 nuclear & particles physics, Hadron, 01 natural sciences, Beta decay, Nuclear physics, Superconducting cyclotron, 0103 physical sciences, Nuclear fusion, Proton emission, 010306 general physics, Nucleon
Abstract: The $ N=28$ isotone 60Ge , $ T_{z}=-2$, was produced and selected among the products of the fragmentation reaction of a 78Kr beam at 150 MeV/nucleon and a Be target by means of the A1900 fragment separator at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU). Its decay was studied for the first time using the optical time projection chamber. The $ \beta$-decay of 60Ge was found to be dominated by $ \beta$-delayed proton emission, with a branching of $ \approx 100$% and half-life $ T_{1/2}=20_{-5}^{+7}$ ms.
Published: 2016
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25. New structure information on 30Mg, 31Mg and 32Mg

Author: P. Hoff, Ulli Köster, Birger Fogelberg, M. Stanoiu, F. Maréchal, Ph. Dessagne, T. Motobayashi, Thomas Nilsson, Alfredo Poves, J. Mrazek, C. Jollet, P. A. Butler, Henryk Mach, Deyan Yordanov, L. M. Fraile, E. Ruchowska, W. Kurcewicz, Joakim Cederkäll, María José García Borge, H. O. U. Fynbo, A. Korgul, Olof Tengblad, S.G. Pedersen, Ari Jokinen, Gerda Neyens, W. Plociennik, R. Boutami, Berta Rubio, 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 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), C. Gross, W. Nazarewicz, K. P. Rykaczewski, and ISOLDE
Subjects: Triple coincidence, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Neutron emission, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Gamma gamma, Nuclear physics, 0103 physical sciences, 21.10.Tg - 23.20.Lv - 27.30.+t, Nuclear fusion, 010306 general physics, Ground state
Abstract: NESTER; The fast timing $\beta\gamma\gamma(t)$ method was applied to investigate the level lifetimes in $^{30,31,32}$Mg. Levels in Mg have been populated in $\beta$ and $\beta$-delayed neutron emission of Na at the ISOLDE facility. From the $\gamma\gamma$ coincidences a number of new states have been identified and new level schemes were constructed for $^{30,31,32}$Mg. The following preliminary half lives have been determined: T$_{1/2}$ = 3.9(4) ns for the 1789 keV state in $^{30}Mg, T$_{1/2}$ = 133(8) ps and 10.5(8) ns for the 221 keV and 461 keV states in $^{31}$Mg, respectively, and T$_{1/2}$ = 16(4) ps for the 885 keV level in $^{32}$Mg. The 1789 keV level was established as a candidate for the intruder 0$^+$ configuration in $^{30}$Mg with a possible strong E0 branch to the ground state.
Published: 2005
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26. The BRIKEN Project: Extensive Measurements of $\beta $-delayed Neutron Emitters for the Astrophysical r Process

Author: H. Baba, P. J. Woods, Shigeru Kubono, J. Agramunt, Iris Dillmann, L. J. Harkness-Brennan, B. Rubio, A.I. Morales, R. Caballero Folch, B. Moon, D. W. Stracener, S.L. Thomas, Toshiyuki Sumikama, Rebecca Surman, Shunji Nishimura, A. Riego, G. Lorusso, M. Labiche, A. Estrade, M. Karny, T. Davinson, N. Nepal, Y. Saito, C. Domingo-Pardo, A. Korgul, K. Miernik, H. Takeda, J. L. Tain, F. Montes, Gabor Kiss, D. S. Ahn, P. J. Coleman-Smith, H. Suzuki, Maya Takechi, T. Isobe, O. Hall, Jenny Lee, F. Calviño, Zs. Podolyák, K. Matsui, Ariel Tarifeño-Saldivia, Hiroyoshi Sakurai, J. M. Allmond, D. Kahl, R. D. Page, M. Kogimtzis, A. Tolosa-Delgado, Alejandro Algora, I.H. Lazarus, P. A. Söderström, B.C. Rasco, J. Ha, N. Fukuda, S. Go, P. H. Regan, JJ Liu, V. F. E. Pucknell, Y. Shimizu, K. P. Rykaczewski, James Simpson, V. H. Phong, C. J. Griffin, Robert Grzywacz, G. Cortes, N.T. Brewer, S. Bae, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
Subjects: Astrofísica, Delayed neutron, Neutron emission, Astrophysics::High Energy Astrophysical Phenomena, Nuclear data, Nuclear Theory, Measure (physics), General Physics and Astronomy, Neutron, Astrophysics, 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Physics, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, Neutron capture, Física::Astronomia i astrofísica [Àrees temàtiques de la UPC], r-process
Abstract: An ambitious program to measure decay properties, primarily β-delayed neutron emission probabilities and half-lives, for a significant number of nuclei near or on the path of the rapid neutron capture process, has been launched at the RIKEN Nishina Center. We give here an overview of the status of the project.
Published: 2018
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27. Lifetime measurement of the 167.1 keV state in $^{41}$Ar

Author: H. O. U. Fynbo, Olof Tengblad, H. Bradley, Johan Nyberg, W. Schwerdtfeger, V. Ugryumov, C. Fransen, O. Arndt, Z. Dlouhy, P. Hoff, N. Braun, G. S. Simpson, A. Joinet, L. M. Fraile, N. Boelaert, A. Korgul, H. Mach, María José García Borge, Ch. Hinke, T. Kröll, E. Ruchowska, W. Kurcewicz, A. Blazhev, E-M. Reillo, P. G. Thirolf, Ulli Köster, K. L. Kratz, J. Jolie, E. R. White, Rafik Boutami, W. B. Walters, M. Stanoiu, A. Jokinen, Institut Laue-Langevin (ILL), ILL, Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and 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)
Subjects: Nuclear and High Energy Physics, Proton, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Particle detector, Ion, electron and muon capture, 21.10.Tg, 23.40.-s, 27.40.+z, Double beta decay, 0103 physical sciences, Nuclear Physics - Experiment, 010306 general physics, Physics, [PACS] β decay, 010308 nuclear & particles physics, 39 ≤ A ≤ 58 [[PACS] Properties of specific nuclei listed by mass ranges], Isotopes of chlorine, double β decay, Beta decay, Charged particle, 3. Good health, [PACS] Properties of specific nuclei listed by mass ranges: 39 ≤ A ≤ 58, [PACS] Lifetimes, widths, Atomic physics, Radioactive decay
Abstract: 4 pages, 3 figures, 1 table.-- PACS nrs.: 21.10.Tg; 23.40.−s; 27.40.+z., The Advanced-Time-Delayed method was used to measure lifetimes of the states in Ar-41 populated in the β decay of Cl-41. The nuclei Cl-41 were produced at ISOLDE by 1.4-GeV proton bombardment of a thick UCx target and mass-separated as molecular ions, XeCl+. Our measured half-life of the 167.1-keV state, T(1/2) = 315(15) ps, is significantly lower than the previously measured value of 410(30) ps. We have also determined T(1/2) = 260(80) ps and T(1/2) ≤ 46 ps for the 515.9- and 1867.7-keV states, respectively. These are the shortest lifetimes measured so far with the ultrafast timing method using the new LaBr3(Ce) crystals for γ-ray detection., This work was performed as part of an undergraduate research project (ERW) at the Physics Department of the University of Notre Dame. Fast-timing detectors and electronics were provided by the Fast Timing Pool of Electronics. This study was supported in part by the NSF PHY04-57120, Swedish Research Council, BMBF Grant No. 06KY205I, the Alexander von Humboldt Foundation (WBW), Foundation for Polish Science (AK), the European Union Sixth Framework through RII3-EURONS (Contract No. 506065), and the EURTD project TARGISOL (HPRI-CT-2001-50033).
Published: 2007
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28. First observation of excited states in $^{139}$I

Author: W. Urban, Matthew Jones, I. Ahmad, M. J. Leddy, N. Schulz, T. Rzaca-Urban, A. Korgul, B. J. Varley, A. G. Smith, John Durell, W.R. Phillips, L. R. Morss, 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 Heyd, Yvette
Subjects: Physics, Nuclear and High Energy Physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, SHELL model, Gamma ray, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, Spontaneous fission
Published: 2002

29. The neutron and proton two-particle nucleus $^{134}$Sb : New low-spin states observed in the decay of $^{134}$Sn and an estimate of the energy of the 7$^-$ isomer

Author: K.I. Erokhina, W. Urban, W. Kurcewicz, F. Coraggio, W.R. Phillips, Birger Fogelberg, J. Blomqvist, J. Galy, B. J. Varley, A. Covello, A. G. Smith, A. Korgul, L. R. Morss, M. Górska, V. I. Isakov, A. Gargano, Henryk Mach, N. Schulz, John Durell, T. Rzaca-Urban, I. Ahmad, H. Gausemel, P. Hoff, F. Andreozzi, 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 Heyd, Yvette
Subjects: Physics, Nuclear and High Energy Physics, Decay scheme, Proton, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Beta-decay stable isobars, Nuclear physics, Internal conversion, Double beta decay, Excited state, 0103 physical sciences, Neutron, Atomic physics, Proton emission, Nuclear Experiment, 010306 general physics
Abstract: Excited states in the 134Sb nucleus, populated in the β−-decay of 134Sn, have been studied at the mass separator OSIRIS. The 134Sn activity was produced via fast neutron-induced fission of 238U target. A main result was the discovery of a very low-lying first-excited state of 134Sb, at 13 keV, which has led to a strong revision of the level scheme. The new results are compared with different theoretical calculations and with the known data for the analogous neutron and proton two-particle nucleus in the 208Pb region. On the basis of this comparison, the energy of the (πg 7/2νf 7/2)7− isomer is estimated to be about 250 keV, some 100 keV lower than previously reported.
Published: 2002

30. A new $\mu$s isomer in $^{136}$Sb produced in the projectile fission of $^{238}$U

Author: Birger Fogelberg, K.-H. Schmidt, H. J. Wollersheim, J. Kurcewicz, J. A. Pinston, C. Mazzocchi, M. Lewitowicz, I. Kojouharov, M. Górska, P. Mayet, M. Bernas, Zsolt Podolyak, Milena Mineva, K. Sümmerer, C. R. Bingham, C. Schlegel, T. Enqvist, Yu. N. Kopatch, J. Gerl, Margareta Hellström, Robert Grzywacz, K. Hauschild, H. Gausemel, Dirk Rudolph, M. Pfützner, Z. Janas, J. Genevey, A. Korgul, P. H. Regan, F. Becker, S. K. Mandal, Henryk Mach, W. Korten, R. Lucas, H. Grawe, Hans Geissel, H. Schaffner, M. Rejmund, 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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 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), and 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)
Subjects: Physics, Nuclear and High Energy Physics, Fission products, Isotope, 010308 nuclear & particles physics, Fission, Projectile, Nuclear Theory, Gamma ray, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Isotope separation, law.invention, Nuclear physics, law, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Nuclear fusion, Atomic physics, Nuclear Experiment, 010306 general physics, Spectroscopy
Abstract: The neutron-rich isotope 136Sb has been produced following the relativistic projectile fission of 238U in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed γ-ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in 136Sb has been populated, and its lifetime measured as T1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables.
Published: 2001
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31. Medium-spin structure of single valence-proton nucleus133Sb

Author: John Durell, P. J. Daly, J. Blomqvist, P. Bhattacharyya, A. Korgul, N. Schulz, B. J. Varley, C. T. Zhang, M. Bentaleb, Matthew Jones, W. Kurcewicz, E. Lubkiewicz, M. J. Leddy, W.R. Phillips, A. G. Smith, I. Ahmad, L. R. Morss, and W. Urban
Subjects: Physics, Nuclear and High Energy Physics, Valence (chemistry), 010308 nuclear & particles physics, Nuclear structure, Spin structure, 01 natural sciences, medicine.anatomical_structure, Excited state, 0103 physical sciences, medicine, Atomic physics, 010306 general physics, Digital document, Nucleus, Multiplet, Spontaneous fission
Abstract: Excited states in the nucleus {sup 133}Sb, populated in spontaneous fission of {sup 248}Cm, were studied with EUROGAM2. Medium-spin structure, described as the {nu}(f{sub 7/2}h{sub 11/2}{sup -1}) multiplet of the {sup 132}Sn core coupled to the odd proton in the g{sub 7/2} orbital, has been identified in this nucleus. Levels corresponding to the octupole excitations of the {sup 132}Sn core were also identified. Some uncertainties concerning isomeric decays in {sup 133}Sb, observed in previous works, have been resolved. (c) 2000 The American Physical Society.
Published: 2000
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32. Properties of N=84, even-even nuclei populated in the spontaneous fission of $^{248}$Cm

Author: M. Bentaleb, John Durell, I. Ahmad, M. Rejmund, T. Rząca-Urban, Matthew Jones, W.R. Phillips, E. Lubkiewicz, N. Schulz, W. Urban, M. J. Leddy, A. Korgul, B. J. Varley, A. G. Smith, L. R. Morss, Lorgeril, Jocelyne, 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 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 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)
Subjects: Physics, Nuclear and High Energy Physics, Spins, 010308 nuclear & particles physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Theory, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Excited state, 0103 physical sciences, Quasiparticle, Nuclear fusion, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Excitation, Spontaneous fission
Abstract: Excited states in the neutron-rich, N=84 nuclei 134Sn, 136Te and 138Xe, populated in the spontaneous fission of 248Cm, were studied to medium spins using the EUROGAM2 array. OXBASH code calculations support the experimental identification of maximum aligned configurations in these isotopes. Empirical shell model calculations agree with the proposed excitation energy of the neutron h9/2 excitation in the 132Sn region. A discrepancy between the observed and calculated excitation energy of the Iπ= 12+ level in 136Te indicates possible admixtures of collective excitations in this nucleus. Clear signs of collective excitations are observed in 138Xe.
Published: 2000

33. γ-ray spectroscopy of fission fragments from the cold-neutron235U induced fission with EXILL

Author: T. Konstantinopoulos, A. Astier, C. Petrache, A. Abudra, R. Bontemps, I. Deloncle, S. Kaim, R. Leguillon, M.-G. Porquet, T. Zerrouki, L. Grente, M.-D. Salsac, M. Zielinska, G. de France, Z. Janas, M. Karny, A. Korgul, M. Ramdhane, G. Gey, G. Simpson, A. Vancraeyenest, A. Blanc, M. Jentschel, U. Köster, P. Mutti, T. Soldner, W. Urban, G. Duchêne, R. Lozeva, F. Ibrahim, A. Gargano, A. Covello, D. Mengoni, C.A. Ur, M. Sferrazza, B. Melon, 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), CSNSM SNO, 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 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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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), F. Farget, A. Chatillon, H. Faust, G. Fioni, D. Goutte, H. Goutte, 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)-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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), 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), ILL, and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Fission products, 010308 nuclear & particles physics, Fission, QC1-999, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Neutron radiation, Nuclear reactor, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Neutron, Nuclear Experiment, Spectroscopy, 010303 astronomy & astrophysics
Abstract: Expérience ILL/EXOGAM; International audience; A cold neutron induced fission experiment recently took place at the Institute Laue-Langevin (ILL) in Grenoble. The neutron beam was provided by the nuclear reactor facility at ILL and the detector setup that was used for the -spectroscopy of the fission products consisted mainly of the detectors of the EXOGAM array [1], thereby the name of the campaign is EXILL. The main purpose of our measurement was to investigate the nuclei in the region with N = 50 close to 78Ni as well as the nuclei close to the N = 82 shell closure. In this paper, the motivation of the experiment is described as well as the experimental setup and the status of the ongoing data analysis.
Published: 2013
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33 results on '"KORGUL, A."'

1. First β -decay spectroscopy of In135 and new β -decay branches of In134

2. β-delayed neutron emission of r-process nuclei at the N = 82 shell closure

3. Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82

4. Angular momentum generation in nuclear fission

5. First lifetime investigations of $N>82$ iodine isotopes: The quest for collectivity

6. Prompt and delayed γ spectroscopy of neutron-rich Kr94 and observation of a new isomer

7. Mapping of fragmented νf5/2→πf7/2 transitions in the Co73→Ni73 decay

8. Detailed spectroscopy of doubly magic Sn 132

9. Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga86,87

10. $\gamma$-ray Spectroscopy of $^{85}$Se Produced in $^{232}$Th Fission

11. Observation of a μs isomer in In8549134 : Proton-neutron coupling 'southeast' of Sn8250132

12. β decay of In133 : γ emission from neutron-unbound states in Sn133

13. Time Projection Chamber (TPC) Detectors for Nuclear Astrophysics Studies With Gamma Beams

14. Updated β -decay measurement of neutron-rich Cu74

15. β -delayed neutron emission from Ga85

16. Investigation of low-lying states in 133sn populated in the - Decay of 133in using isomer-selective laser ionization

17. Experimental study of the β decay of the very neutron-rich nucleus Ge85

18. Ultrafast-timing lifetime measurements in Ru94 and Pd96 : Breakdown of the seniority scheme in N=50 isotones

19. High-sensitivity study of levels in Al30 following β decay of Mg30

20. β-decay study ofKr94

21. βandβ−ndecay of the neutron-richGe84nucleus

22. Reexamining Gamow-Teller decays nearNi78

23. Fast-timing study of thel-forbidden1/2+→3/2+ M1transition inSn129

24. First measurement of 60Ge $\beta$ -decay

25. New structure information on 30Mg, 31Mg and 32Mg

26. The BRIKEN Project: Extensive Measurements of $\beta $-delayed Neutron Emitters for the Astrophysical r Process

27. Lifetime measurement of the 167.1 keV state in $^{41}$Ar

28. First observation of excited states in $^{139}$I

29. The neutron and proton two-particle nucleus $^{134}$Sb : New low-spin states observed in the decay of $^{134}$Sn and an estimate of the energy of the 7$^-$ isomer

30. A new $\mu$s isomer in $^{136}$Sb produced in the projectile fission of $^{238}$U

31. Medium-spin structure of single valence-proton nucleus133Sb

32. Properties of N=84, even-even nuclei populated in the spontaneous fission of $^{248}$Cm

33. γ-ray spectroscopy of fission fragments from the cold-neutron235U induced fission with EXILL

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33 results on '"KORGUL, A."'

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