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1. Spectroscopy of 2565,67Mn: Strong coupling in the N = 40 'island of inversion'

Author

K. Matsui, H. Otsu, W.Q. Zhang, J.-Y. Roussé, Tadaaki Isobe, R. Lozeva, X.H. Zhou, Satoshi Takeuchi, X.Y. Liu, E. Sahin, Shunpei Koyama, P. Doornenbal, S. Franchoo, Zs. Dombradi, F. Nowacki, Shuichi Ota, C. Santamaria, A. Obertelli, A. Gottardo, Daisuke Suzuki, K. Hadynska-Klek, Jin Wu, L. X. Chung, Masaki Sasano, Ryo Taniuchi, Hiroyoshi Sakurai, Jenny Lee, K. Yoneda, Megumi Niikura, H.S. Xu, P. A. Söderström, C. Louchart, T. Motobayashi, Tomohiro Uesaka, Yuya Kubota, C. Péron, Tsuyoshi Miyazaki, H. Lu, G. Authelet, G. L. Stefan, V. Werner, B. D. Linh, F. Château, A. Delbart, J. M. Gheller, A. Gillibert, C. M. Shand, H. Wang, Z. Liu, S. Nishimura, Zs. Vajta, Philip M Walker, Masafumi Matsushita, Satoru Momiyama, M. Lettmann, F. Browne, S. M. Lenzi, Yoshiaki Shiga, Toshiyuki Sumikama, L. Olivier, E. C. Pollacco, Feng-Shou Zhang, F. Giacoppo, David Steppenbeck, V. Lapoux, T.H. Huang, Zena Patel, H. Baba, M. D. Sun, Y.H. Zhang, D. Calvet, Zhengyu Xu, Alan Peyaud, B. Ding, A. Corsi, Z. Korkulu, Y.H. Lam, and De-fu Hou

Subjects
Physics, Coupling, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Island of inversion, Nuclear structure, Decoupling (cosmology), 01 natural sciences, Molecular physics, Excited state, 0103 physical sciences, Neutron, 010306 general physics, Spectroscopy, Line (formation)
Abstract

Excited states in 63,65,67Mn were studied via in-beam γ-ray spectroscopy following knockout reactions from 68Fe. Similar level schemes, consisting of the 11/2−, 9/2−, 7/2− and 5/2 g.s.− level sequence, connected by I→I−1 transitions, were established, the first time for 65,67Mn. Their level structures show features consistent with strongly-coupled rotational bands with K=5/2 . State-of-the-art shell-model calculations with the modified LNPS effective interaction reproduce the observed levels remarkably well and suggest the dominance of 4-particle-4-hole neutron configurations for all the states. The data on the low-lying excited states of odd-mass 53−67Mn provide a textbook example of nuclear structure evolution from weak coupling through decoupling to strong coupling along a single isotopic chain on the n-rich side of the β stability line. These results help to deepen our understanding of the N=40 “island of inversion”.

Published
2018

2. The (6+) isomer in 102Sn revisited: Neutron and proton effective charges close to the double shell closure

Author

Shunji Nishimura, Yu. A. Litvinov, T. Davinson, H. J. Wollersheim, F. Nebel, K. Straub, T. Habermann, S. Schwertel, T. Faestermann, Igor T. Čeliković, P. Boutachkov, F. Farinon, C. Hinke, P. Strmeň, Hans Geissel, H. Schaffner, M. Karny, F. Nowacki, M. Lewitowicz, H. Grawe, N. Kurz, M. Górska, P. A. Söderström, G. F. Farrelly, Andreas Stolz, Zs. Podolyák, A. Atac, J. Grȩbosz, A. Prochazka, Robert Hoischen, I. Kojouharov, R. Janik, C. Scheidenberger, P. J. Woods, P. H. Regan, S. J. Steer, S. Pietri, S. Myalski, N. Braun, Roman Gernhäuser, M. Böhmer, A. Blazhev, N. Al-Dahan, Johan Nyberg, R. Krücken, A. Kaşkaş, J. Gerl, N. Alkhomashi, L. Maier, N. Goel, C. Nociforo, A. Gottardo, Zhi Liu, Catherine Rigollet, C. Domingo-Pardo, Helmut Weick, P. Doornenbal, Iris Dillmann, A. Parikh, K. Steiger, Th. Kröll, CoSee GmbH [Darmstadt], Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), 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), SUPA School of Physics and Astronomy [Edinburgh], University of Edinburgh, Polish Academy of Sciences (PAN), Department of Physics, University of Surrey, University of Surrey (UNIS), Department of Physics, Faculty of Science, Middle East Technical University, Ankara, Turkey, Department of Fusion Plasma Physics [Stockholm] (KTH), Royal Institute of Technology [Stockholm] (KTH ), University of Cologne, Vinča Institute of Nuclear Sciences, University of Belgrade [Belgrade], 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), Comenius University in Bratislava, University of Warsaw (UW), Faculty of Science Astronomy, Ankara University, Tandogan Ankara, TR-06100 Turkey, obasturk@ankara.edu.tr, Polska Akademia Nauk = Polish Academy of Sciences (PAN), RIKEN Nishina Center for Accelerator-Based Science [Wako] (RIKEN RNC), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Uppsala Universitet [Uppsala], Kernfysisch Versneller Instituut (KVI), University of Groningen [Groningen], Uppsala University, Michigan State University [East Lansing], Michigan State University System, RISING, 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Blank, B., and Technische Universität München [München] (TUM)

Subjects
Sn, Nuclear and High Energy Physics, Proton, QC1-999, SHELL model, Closure (topology), Shell (structure), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Space (mathematics), 01 natural sciences, Subatomär fysik, Shell model, Fragmentation (mass spectrometry), Subatomic Physics, 0103 physical sciences, ddc:530, Neutron, 010306 general physics, Effective charges near Sn, Physics, 010308 nuclear & particles physics, Effective charges near, Polarization (waves), ddc, Effective charges near Sn-100, Electromagnetic transitions, Effective charges near 100Sn, Atomic physics
Abstract

Physics letters / B 820, 136591 (2021). doi:10.1016/j.physletb.2021.136591, Published by North-Holland Publ., Amsterdam

Published
2021

3. Isomer spectroscopy of neutron-rich 168Tb103

Author

J. J. Valiente-Dobón, Hiroyoshi Sakurai, P. H. Regan, K. Y. Chae, H. L. Liu, P. Lee, A Yag, V. H. Phong, Zhengyu Xu, H. Baba, Shigeru Kubono, Gavin Lotay, Eunji Lee, Shunji Nishimura, I. Nishizuka, Furong Xu, H. Kanaoka, Eiji Ideguchi, N. Kurz, C-B Moon, Zs. Vajta, C. S. Lee, Philip M Walker, W. N. Catford, C. J. Griffin, F. G. Kondev, Naoki Fukuda, Raymond J. Carroll, T. Isobe, L. A. Gurgi, Alison Bruce, Atsuko Odahara, J. J. Liu, Toshiyuki Kubo, S. Yoshida, Jin Wu, Thamer Alharbi, P-A Soderstrom, István Kuti, Satoru Terashima, C. R. Nita, C. M. Shand, Oliver J. Roberts, Gregory Lane, Giuseppe Lorusso, Zs. Dombrádi, Zena Patel, Zsolt Podolyak, S. Lalkovski, P. Doornenbal, H. Schaffner, Toshiyuki Sumikama, T. Berry, F. Browne, Hiroshi Suzuki, I. Kojouharov, Hiroyuki Takeda, A. Estrade, Naohito Inabe, Hirofumi Watanabe, Z. Korkulu, and G. X. Zhang

Subjects
Radiation, Spectrometer, 010308 nuclear & particles physics, Chemistry, Fission, Nuclear Theory, chemistry.chemical_element, Germanium, 01 natural sciences, Semiconductor detector, Nuclear physics, Excited state, 0103 physical sciences, High Energy Physics::Experiment, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Spectroscopy
Abstract

In-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm thick 9Be target has been used to produce and study the decays of a range of neutron-rich nuclei centred around the doubly mid-shell nucleus 170Dy at the RIBF Facility, RIKEN, Japan. The produced secondary fragments of interest were identified eventby- event using the BigRIPS separator. The fragments were implanted into the WAS3ABI position sensitive silicon active stopper which allowed pixelated correlations between implants and their subsequent β-decay. Discrete γ-ray transitions emitted following decays from either metastable states or excited states populated following beta decay were identified using the 84 coaxial high-purity germanium (HPGe) detectors of the EURICA spectrometer, which was complemented by 18 additional cerium-doped lanthanum bromide (LaBr3)

Published
2017

4. Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn

Author

L. Olivier, K. Moschner, Kathrin Wimmer, E. C. Pollacco, A. Gillibert, C. R. Nita, C. M. Shand, J.-Y. Roussé, Satoru Momiyama, M. Lettmann, Jian Liu, A. Jungclaus, Hideaki Otsu, Z. Korkulu, Ryo Taniuchi, C. Péron, David Steppenbeck, A. Blazhev, Tsuyoshi Miyazaki, G. Authelet, K. Matsui, Satoshi Takeuchi, A. Château, A. Obertelli, F. Nowacki, S. Franchoo, Kamila Sieja, Toshiaki Ando, J. M. Gheller, Alan Peyaud, Jin Wu, L. X. Chung, Shuichi Ota, C. R. Nobs, B. D. Linh, Zs. Vajta, Y. Kubota, Megumi Niikura, M. Rudigier, I. Stefan, H. Wang, R. Orlandi, J. A. Tostevin, Takaharu Otsuka, Si-Ge Chen, P. A. Söderström, Tomohiro Uesaka, C. Lizarazo, S. Nishimura, Zs. Dombradi, Toshiyuki Sumikama, K. Hadynska-Klek, M. Nagamine, Yusuke Tsunoda, T. Isobe, E. Sahin, C. Louchart, Hiroyoshi Sakurai, V. Lapoux, C. Santamaria, T. Motobayashi, Victor Vaquero, F. Giacoppo, T. Arici, A. Corsi, Zena Patel, P. Doornenbal, Masafumi Matsushita, A. Delbart, P. H. Regan, M. Dewald, Zsolt Podolyak, A. Giganon, A. Gottardo, Jenny Lee, F. Flavigny, M. Górska, N. Paul, Noritsugu Nakatsuka, M. L. Cortés, Zi Hong Liu, V. Werner, Raymond J. Carroll, Daisuke Suzuki, D. Calvet, M. Sasano, Bing Ding, Shoko Koyama, Zhengyu Xu, T. Saito, Alison Bruce, R. Lozeva, K. Yoneda, F. Browne, H. Baba, Yoshiaki Shiga, SCOAP, RIKEN Nishina Center for Accelerator-Based Science, Science and Technology Facilities Council (UK), European Commission, European Research Council, Vietnam Academy of Science and Technology, Federal Ministry of Education and Research (Germany), Ministerio de Economía y Competitividad (España), 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 Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-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), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 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)-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)

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, SHELL model, Analytical chemistry, Shell (structure), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, lcsh:QC1-999, Atomic orbital, Neutron number, 0103 physical sciences, ddc:530, Atomic physics, 010306 general physics, Spectroscopy, lcsh:Physics
Abstract

C.M. Shand et al. -- 6 pags., 3 figs., tab. --Open Access funded by Creative Commons Atribution Licence 4.0, We report on the measurement of new low-lying states in the neutron-rich Zn nuclei via in-beam γ-ray spectroscopy. These include the 4 →2 transition in Zn, the 2 →0 and 4 →2 transitions in Zn, and low-lying states in Zn were observed for the first time. The reduced E(2 ) energies and increased E(4 )/E(2 ) ratios at N=52, 54 compared to those in Zn attest that the magicity is confined to the neutron number N=50 only. The deduced level schemes are compared to three state-of-the-art shell model calculations and a good agreement is observed with all three calculations. The newly observed 2 and 4 levels in Zn suggest the onset of deformation towards heavier Zn isotopes, which has been incorporated by taking into account the upper sdg orbitals in the Ni78-II and the PFSDG-U models., All UK authors are supported by the Science and Technology Facilities Council (STFC). The development of MINOS and the core MINOS team have been supported by the European Research Council through the ERC Grant No. MINOS-258567. A. Jungclaus was supported by the Spanish Ministerio de Economía y Competitividad under contract FPA2014-57196-C5-4-P. Authors from Cologne were supported by German BMBF Grant No. 05P15PKFNA. Authors from TU Darmstadt were supported by German BMBF Grant No. 05P12RDFN8 and 05P15RDFN1. L.X. Chung and B.D. Linh would like to acknowledge Vietnam Ministry of Science and Technology for the support, and Radioactive Isotope Physics Laboratory of the RIKEN Nishina Center for supporting their stay during the experiments.

Published
2017

5. Single-neutron knockout from 20C and the structure of 19C

Author

T. Kubo, K. Yoneda, S. K. Kim, D. Kameda, Hiroshi Suzuki, T. Isobe, Takashi Nakamura, Y. Satou, Jongmin Lee, P. Doornenbal, Nagao Kobayashi, H. Baba, Ryuki Tanaka, T. Nakashima, S. Ogoshi, R. Minakata, H. Takeda, Toshio Kobayashi, Y. Shimizu, N. A. Orr, D. Kanno, Noritsugu Nakatsuka, Marine Vandebrouck, S. Leblond, K. Takahashi, Yasuhiro Togano, Yosuke Kondo, Hideaki Otsu, Jongwon Hwang, Thomas Aumann, N. L. Achouri, Hirohiko Sato, Daichi Murai, Naoki Fukuda, A. G. Tuff, S. Nishi, T. Motobayashi, Julien Gibelin, K. Muto, Franck Delaunay, Satoshi Takeuchi, F. M. Marqués, T. Murakami, A. Navin, and Naohito Inabe

Subjects
Physics, Nuclear and High Energy Physics, Valence (chemistry), 010308 nuclear & particles physics, Nuclear Theory, Magnetic monopole, Heavy-ion knockout, Shell evolution, Halo nucleus, 01 natural sciences, lcsh:QC1-999, 3. Good health, 0103 physical sciences, Invariant mass spectroscopy, Level structure, ddc:530, Neutron, Invariant mass, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Ground state, lcsh:Physics
Abstract

The low-lying unbound level structure of the halo nucleus 19C has been investigated using single-neutron knockout from 20C on a carbon target at 280 MeV/nucleon. The invariant mass spectrum, derived from the momenta of the forward going beam velocity 18C fragment and neutrons, was found to be dominated by a very narrow near threshold ( E rel = 0.036 ( 1 ) MeV) peak. Two less strongly populated resonance-like features were also observed at E rel = 0.84 ( 4 ) and 2.31 ( 3 ) MeV, both of which exhibit characteristics consistent with neutron p-shell hole states. Comparisons of the energies, measured cross sections and parallel momentum distributions to the results of shell-model and eikonal reaction calculations lead to spin-parity assignments of 5 / 2 1 + and 1 / 2 1 − for the levels at E x = 0.62 ( 9 ) and 2.89 ( 10 ) MeV with S n = 0.58 ( 9 ) MeV. Spectroscopic factors were also deduced and found to be in reasonable accord with shell-model calculations. The valence neutron configuration of the 20C ground state is thus seen to include, in addition to the known 1 s 1 / 2 2 component, a significant 0 d 5 / 2 2 contribution. The level scheme of 19C, including significantly the 1 / 2 1 − cross-shell state, is well accounted for by the YSOX shell-model interaction developed from the monopole-based universal interaction.

Published
2017

6. Observation of isoscalar and isovector dipole excitations in neutron-rich 20 O

Author

K. Yoneda, Ryo Taniuchi, Susumu Shimoura, H. Baba, T. Murakami, J. Tsubota, R. Avigo, Hideaki Otsu, Yosuke Kondo, Agnese Giaz, Noritsugu Nakatsuka, C. Caesar, Takeo Kawabata, F. Camera, S. Ceruti, Y. L. Yamaguchi, Hooi Jin Ong, Kathrin Wimmer, A. Horvat, Juzo Zenihiro, J. Tscheuschner, T. Ozaki, Toshiyuki Sumikama, Takashi Nakamura, B. Million, H. Wang, F. Schindler, Hiroyuki Takeda, A. Bracco, Heiko Scheit, Hiroyoshi Sakurai, Tsuyoshi Ohnishi, Shoko Koyama, M. Shikata, I. Syndikus, N. Imai, T. Motobayashi, Kazuo Ieki, T. Inakura, Yoshiaki Shiga, V. Derya, Shuichi Ota, P. Doornenbal, Shoichiro Masuoka, Yasuhiro Togano, P. Schrock, Masafumi Matsushita, S. Michimasa, Oliver Wieland, Shao-Long Chen, David Steppenbeck, Atsumi Saito, Satoshi Takeuchi, S.R. Banerjee, Thomas Aumann, M. Kurata-Nishimura, Atsushi Tamii, and Nagao Kobayashi

Subjects
O20, Nuclear and High Energy Physics, Inelastic α scattering, Isoscalar, Nuclear Theory, Inelastic alpha scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, ddc:530, Neutron, Born approximation, 010306 general physics, Physics, Isovector, 010308 nuclear & particles physics, Inelastic α scattering, Low-energy dipole excitation, Virtual-photon excitation, lcsh:QC1-999, Dipole, O-20, Isospin, Excited state, (20)O, Sum rule in quantum mechanics, Atomic physics, lcsh:Physics
Abstract

The isospin characters of low-energy dipole excitations in neutron-rich unstable nucleus 20O were investigated, for the first time in unstable nuclei. Two spectra obtained from a dominant isovector probe (View the MathML sourceO20+Au) and a dominant isoscalar probe (View the MathML sourceO20+α) were compared and analyzed by the distorted-wave Born approximation to extract independently the isovector and isoscalar dipole strengths. Two known 1−1− states with large isovector dipole strengths at energies of 5.36(5) MeV (View the MathML source11−) and 6.84(7) MeV (View the MathML source12−) were also excited by the isoscalar probe. These two states were found to have different isoscalar dipole strengths, 2.70(32)% (View the MathML source11−) and 0.67(12)% (View the MathML source12−), respectively, in exhaustion of the isoscalar dipole-energy-weighted sum rule. The difference in isoscalar strength indicated that they have different underlying structures. ispartof: Physics Letters B vol:768 pages:387-392 status: published

Published
2017

7. K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy

Author

P. A. Söderström, C. J. Griffin, Philip M Walker, Shunji Nishimura, Ayumi Yagi, István Kuti, Zhengyu Xu, A. Estrade, Gavin Lotay, N. Kurz, P. Lee, S. Lalkovski, S. Terashima, V. H. Phong, P. Doornenbal, F. Browne, Naoki Fukuda, Raymond J. Carroll, Thamer Alharbi, H. L. Liu, Zs. Vajta, Oliver J. Roberts, Zs. Podolyák, C. S. Lee, C. M. Shand, Hidetada Baba, D.S. Ahn, Zs. Dombrádi, Alison Bruce, Shigeru Kubono, K. Y. Chae, S. Kanaya, Furong Xu, J. J. Liu, H. Kanaoka, Zena Patel, C. R. Niţă, I. Nishizuka, Atsuko Odahara, Toshiyuki Sumikama, Hiroyuki Takeda, G. J. Lane, Toshiyuki Kubo, Hiroyoshi Sakurai, E. J. Lee, P. H. Regan, G. X. Zhang, H. Schaffner, Eiji Ideguchi, Naohito Inabe, Hirofumi Watanabe, Tadaaki Isobe, Chang-Bum Moon, Z. Korkulu, Hiroshi Suzuki, I. Kojouharov, J. J. Valiente-Dobón, Jin Wu, G. Lorusso, and F. G. Kondev

Subjects
Mid-shell, Nuclear and High Energy Physics, Shell (structure), chemistry.chemical_element, 01 natural sciences, K isomer, 0103 physical sciences, medicine, Physics::Atomic and Molecular Clusters, Dysprosium, Gamma spectroscopy, ddc:530, Nuclide, 010306 general physics, γ-Ray spectroscopy, Physics, 010308 nuclear & particles physics, Yrast, lcsh:QC1-999, medicine.anatomical_structure, chemistry, Atomic physics, Nucleus, Order of magnitude, Excitation, lcsh:Physics
Abstract

Physics letters / B 762, 404 - 408 (2016). doi:10.1016/j.physletb.2016.09.058, Published by North-Holland Publ., Amsterdam

Published
2016
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8. Decay spectroscopy of 160 Sm: The lightest four-quasiparticle K isomer

Author

Hiroyoshi Sakurai, P. H. Regan, István Kuti, M. Tanaka, Shunji Nishimura, H. Suzuki, Naohiro Inabe, Hiroki Nishibata, Tetsuro Komatsubara, T. Isobe, Toshiyuki Kubo, Rin Yokoyama, Shin'ichiro Michimasa, K. Kobayashi, Toshiyuki Sumikama, Zs. Dombrádi, N. Kurz, D. Kameda, E. Sahin, Ayumi Yagi, Zhengyu Xu, Atsuko Odahara, I. Kojouharov, R. Daido, Z. H. Li, Eiji Ideguchi, F. Browne, Stephen Rice, G. Benzoni, Zs. Podolyák, Jan Taprogge, Hiroyuki Takeda, H. Schaffner, P. Doornenbal, Guillaume Gey, H. L. Liu, Michikazu Kobayashi, Chang-Bum Moon, Hirofumi Watanabe, A. Gottardo, Nori Aoi, Zs. Vajta, Gary Simpson, F. L. Bello Garrote, I. Nishizuka, Shintaro Go, Zena Patel, P. M. Walker, N. Fukuda, L. Sinclair, P. A. Söderström, H. Baba, Y. F. Fang, Furong Xu, Masafumi Matsushita, Jin Wu, G. Lorusso, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, Fizikai tudományok, State (functional analysis), 7. Clean energy, 01 natural sciences, lcsh:QC1-999, Természettudományok, 0103 physical sciences, Potential energy surface, Quasiparticle, ddc:530, Atomic physics, 010306 general physics, Ground state, Electronic band structure, Spectroscopy, ComputingMilieux_MISCELLANEOUS, lcsh:Physics, Excitation
Abstract

The decay of a new four-quasiparticle isomeric state in 160Sm has been observed using γ-ray spectroscopy at the RIBF, RIKEN. The four-quasiparticle state is assigned a 2 π ⊗ 2 ν π 5 2 − [ 532 ] , π 5 2 + [ 413 ] , ν 5 2 − [ 523 ] , ν 7 2 + [ 633 ] configuration. The half-life of this ( 11 + ) state is measured to be 1.8(4) μs. The ( 11 + ) isomer decays into a rotational band structure, based on a ( 6 − ) ν 5 2 − [ 523 ] ⊗ ν 7 2 + [ 633 ] bandhead, consistent with the g K − g R values. This decays to a ( 5 − ) two-proton quasiparticle state, which in turn decays to the ground state band. Potential energy surface and blocked-BCS calculations were performed in the deformed midshell region around 160Sm. They reveal a significant influence from β 6 deformation and that 160Sm is the best candidate for the lightest four-quasiparticle K isomer to exist in this region. The relationship between reduced hindrance and isomer excitation energy for E1 transitions from multiquasiparticle states is considered with the new data from 160Sm. The E1 data are found to agree with the existing relationship for E2 transitions.

Published
2016

9. Restoration of the natural E(1/21+) - E(3/21+) energy splitting in odd-K isotopes towards N = 40

Author

David Steppenbeck, B. D. Linh, H. Törnqvist, Igor Gašparić, H. N. Liu, Kazuki Yoshida, Yosuke Kondo, Toshio Kobayashi, P. A. Söderström, K. Yoneda, N. Paul, Carlo Barbieri, S. Y. Park, D. M. Rossi, V. Lapoux, Donghang Yan, H. Baba, K. Moschner, Masaki Sasano, V. Werner, Yutaka Utsuno, Yoshiki Chazono, S. Wang, D. Sohler, Zaihong Yang, I. Murray, K. I. Hahn, L. Stuhl, Kathrin Wimmer, Jenny Lee, J. M. Gheller, Victor Vaquero, R.-B. Gerst, Takaharu Otsuka, F. Browne, A. Obertelli, Nobuyuki Chiga, D. Calvet, T. Isobe, Hiroyoshi Sakurai, T. Koiwai, Yuya Kubota, C. Hilaire, T. Motobayashi, F. Nowacki, F. Château, A. Delbart, C. Lehr, A. Gillibert, M. MacCormick, Julien Gibelin, A. Corsi, X. X. Xu, V. Panin, M. L. Cortés, Thomas Aumann, O. Aktas, S. Franchoo, Si-Ge Chen, L. X. Chung, L. Zanetti, A. Giganon, Francesco Raimondi, Hideaki Otsu, Hirofumi Yamada, Tomohiro Uesaka, W. Rodriguez, F. Flavigny, Yasuhiro Togano, T. Lokotko, E. Sahin, N.L. Achouri, Y.L. Sun, Takashi Nakamura, Petr Navrátil, P. Doornenbal, Thomas Duguet, V. Wagner, Satoshi Takeuchi, D. Kim, V. Somà, Masahiro Yasuda, Kazuyuki Ogata, and P. Koseoglou

Subjects
Physics, Nuclear and High Energy Physics, Chemical substance, Isotope, 010308 nuclear & particles physics, SHELL model, 01 natural sciences, Vertex (geometry), Ab initio quantum chemistry methods, Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Spectroscopy
Abstract

We report on the first γ-ray spectroscopy of 51,53K produced via the 52,54Ca(p,2p) reactions at ∼250 MeV/nucleon. Unambiguous final-state angular-momentum assignments were achieved for beam intensities down to few particles per second by using a new technique based on reaction vertex tracking combined with a thick liquid-hydrogen target. Through γ-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/2+ ground states and 1/2+ first excited states in 51,53K were established quantifying the natural ordering of the 1 d 3 / 2 and 2 s 1 / 2 proton-hole states that are restored at N = 32 and 34. State-of-the-art ab initio calculations and shell-model calculations with improved phenomenological effective interactions reproduce the present data and predict consistently the increase of the E(1/2 1 + ) - E(3/2 1 + ) energy differences towards N = 40.

Published
2020

10. Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in 168Dy and 169Dy

Author

JJ Liu, P. Lee, Shigeru Kubono, T. Lauritsen, Eunji Lee, J. J. Valiente-Dobón, S. Kanaya, Alison Bruce, H. Baba, S. Zhu, Shunji Nishimura, G. X. Zhang, Thamer Alharbi, Z. Korkulu, Zhengyu Xu, C.J. Chiara, D. Seweryniak, V. H. Phong, Gavin Lotay, C. J. Lister, C. M. Shand, Toshiyuki Kubo, Hirofumi Watanabe, Jin Wu, Y. Shimizu, Kenichi Yoshida, Zs. Vajta, C. S. Lee, I. Nishizuka, C. R. Nita, Atsuko Odahara, Chang-Bum Moon, H. Schaffner, M. P. Carpenter, F. Browne, G. J. Lane, Giuseppe Lorusso, P. M. Walker, Hiroshi Suzuki, I. Kojouharov, P. A. Söderström, D.S. Ahn, Hiroyoshi Sakurai, Eiji Ideguchi, Naohito Inabe, A. Estrade, K. Y. Chae, G.D. Dracoulis, István Kuti, Satoru Terashima, P. H. Regan, S. Lalkovski, Toshiyuki Sumikama, Hiroyuki Takeda, N. Kurz, P. Doornenbal, Zena Patel, Naoki Fukuda, Raymond J. Carroll, Zs. Podolyák, Zs. Dombradi, T. Isobe, Ayumi Yagi, C. J. Griffin, E. A. McCutchan, Oliver J. Roberts, H. Kanaoka, and F. G. Kondev

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Fission, 01 natural sciences, lcsh:QC1-999, Isotope separation, law.invention, Nuclear physics, law, 0103 physical sciences, Quasiparticle, Gammasphere, Neutron, 010306 general physics, Ground state, lcsh:Physics, Excitation
Abstract

The neutron-rich dysprosium isotopes ¹⁶⁸Dy₁₀₂ and ¹⁶⁹Dy₁₀₃ have been investigated using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity uranium beam in conjunction with isotope separation through the BigRIPS separator at RIBF in RIKEN Nishina Center. For ¹⁶⁸Dy, a previously unreported isomer with a half-life of 0.57(7) μs has been identified at an excitation energy of 1378 keV, and its presence affirmed independently using γ-γ-γ coincidence data taken with Gammasphere via two-proton transfer from an enriched ¹⁷⁰Er target performed at Argonne National Laboratory. This isomer is assigned Jπ = Kπ = (4⁻) based on the measured transition strengths, decay patterns, and the energy systematics for two-quasiparticle states in N = 102 isotones. The underlying mechanism of two-quasiparticle excitations in the doubly midshell region is discussed in comparison with the deformed QRPA and multi-quasiparticle calculations. In ¹⁶⁹Dy, the B(E2) value for the transition de-exciting the previously unreported Kπ = (1/2⁻) isomeric state at 166 keV to the Kπ = (5/2⁻) ground state is approximately two orders of magnitude larger than the E2 strength for the corresponding isomeric-decay transition in the N = 103 isotone ¹⁷³Yb, suggesting the presence of a significant γ-vibrational admixture with a dominant neutron one-quasiparticle component in the isomeric state.

Published
2019

11. Conceptual design and performance study for the first implementation of AGATA at the in-flight RIB facility of GSI

Author

D. Bazzacco, J. Gerl, H. J. Wollersheim, P. Doornenbal, E. Farnea, C. Domingo-Pardo, and A. Gadea

Subjects
Physics, Nuclear and High Energy Physics, Angular range, business.industry, Monte Carlo method, Detector, Electromagnetic radiation, Angular distribution, Optics, Conceptual design, AGATA, Aerospace engineering, business, Instrumentation, Preparatory phase
Abstract

The main objective of the Advanced GAmma Tracking Array (AGATA) is the investigation of the structure of exotic nuclei at the new generation of RIB facilities. As part of the preparatory phase for FAIR-NUSTAR, AGATA is going to be installed at the FRS fragmentation facility of the GSI centre for an experimental campaign to be performed in 2012 and 2013. Owing to its γ - ray tracking capabilities and the envisaged enhancement in resolving power, a series of in-flight γ - ray spectroscopy experiments are being planned. The present work describes the conceptual design of this first implementation of AGATA at GSI-FRS, and provides information about the expected performance figures. According to the characteristics of each particular experiment, it is foreseen that the target–array distance is adjusted in order to achieve the optimum compromise between detection efficiency and energy resolution, or to cover an specific angular range of the emitted electromagnetic radiation. Thus, a comprehensive Monte Carlo study of the detection sensitivity in terms of photopeak efficiency, resolution and peak-to-total ratio, as a function of the target–array distance is presented. Several configurations have been investigated, and MC-calculations indicate that a remarkable enhancement in resolving power can be achieved when double-cluster AGATA detectors are developed and implemented. Several experimental effects are also investigated. This concerns the impact of passive materials between the target and the array, the angular distribution of the detection efficiency and the influence of target thickness effects and transition lifetimes in the attainable detection sensitivity. A short overview on half-life measurements via lineshape effects utilizing AGATA is also presented.

Published
2012

12. Lifetime effects for high-resolution gamma-ray spectroscopy at relativistic energies and their implications for the RISING spectrometer

Author

S. Chmel, P. Reiter, L. Caceres, J. Walker, M. Górska, A. Bracco, I. Kojouharov, M. Kmiecik, S.K. Mandal, A. Richard, G. Benzoni, O. Wieland, O. Kavatsyuk, A. Bürger, P. Doornenbal, J. Gre¸bosz, Helmut Weick, F. Becker, Norio Saito, A. Al-Khatib, P. Bednarczyk, Hans Geissel, H. Schaffner, A. Maj, H. J. Wollersheim, M. Winkler, H. Hübel, N. Warr, Zs. Podolyák, J. Gerl, B. Million, W. Meczynski, F. Camera, T. Beck, T. Striepling, Tomoki Saito, H. Grawe, N. Kurz, M. Kavatsyuk, M. Seidlitz, F. C. L. Crespi, A. Banu, R. Lozeva, and Publica

Subjects
Physics, Nuclear and High Energy Physics, Photon, Spectrometer, Astrophysics::High Energy Astrophysical Phenomena, in-beam gamma-ray spectroscopy, lifetime measurement technique, Observable, Spectral line, symbols.namesake, Fragmentation (mass spectrometry), Excited state, symbols, Gamma spectroscopy, Atomic physics, Instrumentation, Doppler effect
Abstract

The lineshapes and peak position of Doppler corrected γ -ray spectra from in-beam experiments at relativistic energies are investigated with respect to the intrinsic energy resolution of the employed detectors, the particles’ velocities, and the photons’ emission angle uncertainties at the moment of γ -ray emission. The uncertainties in velocity and photon emission angle are dependent on the lifetime of the excited state. The impact of these two observables on the lineshape and energy resolution are studied for the RISING γ -spectrometer by means of simulations and experimental results from a two-step fragmentation experiment at ≈ 200 MeV / u . Potential use of the distinct lineshape for lifetime determination is demonstrated for measured γ -ray transitions.

Published
2010

13. Proton–hole excitation in the closed shell nucleus 205Au

Author

D. Mücher, Zhi Liu, Enrique Casarejos, I. Kojouharov, P. Doornenbal, J. J. Valiente-Dobón, C. Mihai, S. Pietri, Robert Hoischen, H. Grawe, J. Grȩbosz, W. Gelletly, I. J. Cullen, K. H. Maier, A. M. Denis Bacelar, A. Algora, H. J. Wollersheim, Atsushi Tamii, M. Górska, Stanislav Tashenov, N. Alkhomashi, Hans Geissel, S. J. Steer, G. Benzoni, Philip M Walker, H. Schaffner, Rajesh Kumar, A. Blazhev, G. F. Farrelly, A. B. Garnsworthy, Zs. Podolyák, J. Gerl, L. Caceres, P. J. Woods, J. Benlliure, Alison Bruce, P. Boutachkov, S. Lalkovski, P. H. Regan, M. E. Estevez, Berta Rubio, F. Molina, and Y. Fujita

Subjects
Physics, Nuclear and High Energy Physics, Particle decay, Proton, Neutron, Electron, Atomic physics, Nuclear Experiment, Spectroscopy, Beta decay, Open shell, Charged particle
Abstract

The neutron-rich N = 126 nucleus Au-205 has been populated following the relativistic energy projectile fragmentation of E/A = 1 GeV Pb-208, and studied via charged-particle decay spectroscopy. An internal decay with a transition energy of 907(5) keV and a half-life of T-1/2 = 6(2) s has been identified through the observation of the corresponding K and L internal conversion electron lines. The 907 keV energy level corresponds to the pi h(11/2)(-1) proton-hole state and decays both internally into the pi d(3/2)(-1) ground-state and via beta decay into Hg-205. The obtained data provides information on the evolution of single-proton hole energies which are vital inputs of shell model descriptions for nuclei around the Pb-208(82)126 doubly magic core. (C) 2009 Elsevier B.V. All rights reserved.

Published
2009

14. Testing of a DSSSD detector for the stopped RISING project

Author

H. J. Wollersheim, I. Kojouharov, Enrique Casarejos, Stanislav Tashenov, J. Benlliure, P. Doornenbal, W. Prokopowicz, Zs. Podolyák, P. H. Regan, R. Kumar, Alejandro Algora, S. Pietri, Berta Rubio, F. Molina, J. Gerl, M. Górska, and H. Schaffner

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Work (electrical), β-decay, HI implantation, Detector, Silicon detectors, Nuclear Experiment, Partial support, Instrumentation
Abstract

An active stopper for the RISING project at GSI has been developed for beta-decay studies and conversion electron spectroscopy following projectile fragmentation/fission reactions. This system employs six double-sided silicon strip detectors in the final focal plane of the GSI FRagment Separator (FRS) to detect both the fragment implantations and their subsequent charged-particle (alpha, beta, p) decays. The wide range of energy response required (150keV up to several GeVs) was covered by the use of a logarithmic preamplifier. Measurements with a Bi-207 conversion electron source yielded an energy resolution of 20 keV at electron energies of similar to 1 MeV and a detection threshold of 150 keV. The response to the implantation of 400 AMeV Xe-136 ions in the active stopper is also discussed in the present paper. (c) 2008 Elsevier B.V. All rights reserved., This work is supported by EPRSC (UK) and EURONS (EU Contract number 506065). Work partially supported by Spanish MEC, Grants FPA2005-03993 and FPA2005-00732. A.A. recognizes partial support of the Ramon y Cajal program.

Published
2009

15. Yrast and non-yrast 2+ states of 134Ce and 136Nd populated in relativistic Coulomb excitation

Author

A. B. Garnsworthy, J. Beller, Takeshi Koike, J. Jolie, W. Prokopowicz, I. Kojouharov, A. Banu, J. Leske, H. Schaffner, T. Saito, P. Reiter, F. Becker, A. Brünle, S. Mallion, N.J. Thompson, P. Bednarczyk, S. Schielke, D. L. Balabanski, S.K. Mandal, C. M. Petrache, Taka Otsuka, C. Boiano, R.A. Bark, L. Caceres, G. Lo Bianco, M. Kavatsyuk, Norbert Pietralla, F. C. L. Crespi, G. Benzoni, K.-H. Behr, J. Grebosz, M. Maliage, A. Richard, O. Wieland, N. Kurz, S. Brambilla, F. Camera, A. Bürger, Zs. Podolyák, J. Gerl, G. Rainovski, T. Beck, J. Walker, M. Górska, G.B. Hagemann, G. Sletten, P. Doornenbal, Dimitar Tonev, Norio Saito, O. Kavatsyuk, A. Maj, H. J. Wollersheim, Q. Zhong, A. Bracco, P. G. Bizzeti, Hans Geissel, N. Warr, and K. Starosta

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Yrast, State (functional analysis), Coulomb excitation, Atomic physics, Beta decay, Excitation
Abstract

The first 2+ states in 134Ce and 136Nd and the second 2+ state in 136Nd were populated by Coulomb excitation at relativistic energies, and γ-rays were measured using the RISING setup at GSI. For 134Ce an indication of the excitation to the second 2+ state was observed. This experiment performed for the first time Coulomb excitation to second 2+ states with rare isotope beams at relativistic energies. For 136Nd the B ( E 2 ; 2 1 + → 0 + ) , B ( E 2 ; 2 2 + → 0 + ) , and B ( E 2 ; 2 2 + → 2 1 + ) values relative to the previously known B ( E 2 ; 2 1 + → 0 + ) value for 134Ce are determined as 81(10), 11(3) and 180(92) W.u., respectively. The results are discussed in the framework of geometrical models that indicate pronounced γ-softness in these nuclei.

Published
2008

16. The T=2 mirrors 36Ca and 36S: A test for isospin symmetry of shell gaps at the driplines

Author

F. C. L. Crespi, Zs. Podolyák, S. Chmel, T. Beck, L. Caceres, A. Banu, Helmut Weick, S.K. Mandal, J. Grȩbosz, F. Becker, F. Camera, J. Gerl, Norio Saito, P. Reiter, P. Bednarczyk, Benedicte Million, H. Schaffner, H. Grawe, N. Kurz, H. J. Wollersheim, H. Hübel, T. Striepling, A. Maj, Yutaka Utsuno, O. Kavatsyuk, I. Kojouharov, M. Kmiecik, M. Seidlitz, A. Richard, J. Walker, A. Al-Khatib, M. Górska, W. Meczynski, O. Wieland, T. Saito, P. Doornenbal, M. Kavatsyuk, R. Lozeva, Hans Geissel, A. Bracco, G. Benzoni, A. Bürger, Takaharu Otsuka, M. Winkler, and N. Warr

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Isotope, Fragmentation (mass spectrometry), Excited state, Isospin, SHELL model, Coulomb, Neutron, Atomic physics, Spectroscopy
Abstract

The first excited 2+2+ state of 36Ca has been identified by its γ -decay, exploiting the two-step fragmentation technique at the FRS-RISING setup at GSI. This is the heaviest Tz=−2Tz=−2 nucleus in the Segré chart in which a γ-decay of an excited state has been observed. A stable beam of 40Ca at View the MathML source420AMeV impinged on a primary 9Be target. Out of the secondary beam of fragmentation products, 37Ca was separated by the FRS and struck on a second 9Be target at the final focus of the FRS. The energy for the View the MathML source21+ decay of 36Ca was determined to be 3015(16) keV, which is 276 keV lower than in its T=2T=2 mirror 36S. This mirror energy difference (MED) is discussed in the framework of shell model calculations using a 16O core, the sd shell isospin symmetric interaction USD and experimental single-particle energies from 17O and 17F. The results show that the MED within the sd shell provide a sensitive test for the evolution of the N , Z=14,16Z=14,16 subshell gaps towards the driplines. Especially the N , Z=16Z=16 gap is determined by Thomas–Ehrman shift in the A=17A=17, T=1/2T=1/2 isospin doublet, while Coulomb effects are found to have marginal influence. ispartof: Physics Letters B vol:647 issue:4 pages:237-242 status: published

Published
2007

17. A novel Calorimeter Telescope for identification of relativistic heavy-ion reaction channels

Author

I. Kojouharov, M. Górska, H. J. Wollersheim, P. Doornenbal, A. Banu, D. L. Balabanski, J. Gerl, R. Lozeva, S. K. Mandal, H. Schaffner, J. Gre¸bosz, F. Becker, and P. Bednarczyk

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Detector, law.invention, Calorimeter, Telescope, Nuclear physics, law, Physics::Accelerator Physics, Heavy ion, Nuclear Experiment, Instrumentation
Abstract

A novel Calorimeter Telescope (CATE) is employed in the fast beam Rare Isotope Investigations at GSI (RISING) g-campaign with relativistic energies at the Fragment Separator (FRS) at GSI. CATE consists of nine modular Si2CsIðTlÞ detector telescopes for position

Published
2006

18. Relativistic Coulomb excitation of neutron-rich 54,56,58Cr: On the pathway of magicity from N=40 to N=32

Author

W. Korten, S. Brambilla, Hans Geissel, A. Banu, Taka Otsuka, I. Kojouharov, Benedicte Million, G Hammond, A. Maj, P. Reiter, A. Bracco, M. Kmiecik, G. Benzoni, F. Becker, Zsolt Podolyak, O. Wieland, A Kavatsyuk, A. Al-Khatib, O. Kavatsyuk, P. Bednarczyk, Emyr Clement, F. Nowacki, T.R. Saito, S. Muralithar, H. Hübel, H. J. Wollersheim, A. Bürger, C. Wheldon, M. Górska, M. Winkler, J. Gerl, Michio Honma, A. Neusser, F. Camera, Andreas Görgen, S. K. Mandal, Norio Saito, Amrendra K. Singh, P. Doornenbal, R. Lozeva, J. Grebosz, P. Bringel, Margareta Hellström, H. Grawe, N. Kurz, T. Beck, and Helmut Weick

Subjects
Physics, Nuclear and High Energy Physics, Excited state, Neutron number, SHELL model, Neutron, Coulomb excitation, Atomic physics, Excitation
Abstract

The first excited 2 + states in 54,56,58Cr were populated by Coulomb excitation at relativistic energies and γ rays were measured using the RISING setup at GSI. For 56Cr and 58Cr the B ( E2 , 2 1 + → 0 + ) values relative to the previously known B ( E 2 ) value for 54Cr are determined as 8.7(3.0) and 14.8(4.2) W.u., respectively. The results are consistent with a subshell closure at neutron number N = 32 which was already indicated by the higher energy of the 2 1 + state in 56Cr. Recent large-scale shell model calculations using effective interactions reproduce the trend in the excitation energies, but fail to account for the minimum in the B ( E 2 ) values at N = 32 .

Published
2005

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

Author

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

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

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

Published
2005

20. Erratum to: 'Neutron–proton pairing competition in N=Z nuclei: Metastable state decays in the proton dripline nuclei 8241Nb and 8643Tc' [Phys. Lett. B 660 (2008) 326]

Author

H. J. Wollersheim, F. Camera, H. Schaffner, T. Saito, J. Gerl, S. Pietri, M. Górska, H. Grawe, N. Kurz, G. Benzoni, M. Kmiecik, S. Schwertel, I. Kojouharov, O. Wieland, Zs. Podolyák, Zs. Dombrádi, F. Becker, Zhi Liu, Andreas Martin Heinz, T. Kurtukian-Nieto, F. G. Kondev, B. Blank, E. Werner-Malento, A. Jungclaus, W. N. Catford, P. Bednarczyk, S. J. Steer, Hans Geissel, T. Shizuma, J. Grȩbosz, W. Prokopowicz, Robert Hoischen, A. B. Garnsworthy, M. Pfützner, Dirk Rudolph, P. Doornenbal, J. Jolie, Alison Bruce, A. Kelic, G. A. Jones, G. Ilie, L. Caceres, A. Maj, I. J. Cullen, Fernando Montes, A. J. Simons, S. Myalski, P. M. Walker, S. Tachenov, E. Estevez, S. Lalkovski, P. H. Regan, Furong Xu, C. Brandau, Yang Sun, and W. Gelletly

Subjects
Physics, Nuclear and High Energy Physics, Proton, Pairing, Metastability, Neutron, Atomic physics
Abstract

Erratum Erratum to: “Neutron–proton pairing competition in N = Z nuclei: Metastable state decays in the proton dripline nuclei 82 41Nb and 86 43Tc” [Phys. Lett. B 660 (2008) 326] A.B. Garnsworthy a,b,∗, P.H. Regan a, L. Caceres c,d, S. Pietri a, Y. Sun e,f, D. Rudolph g, M. Gorska c, Zs. Podolyak a, S.J. Steer a, R. Hoischen g,c, A. Heinz b, F. Becker c, P. Bednarczyk c,h, P. Doornenbal c, H. Geissel c, J. Gerl c, H. Grawe c, J. Grȩbosz h,c, A. Kelic c, I. Kojouharov c, N. Kurz c, F. Montes c, W. Prokopowicz c, T. Saito c, H. Schaffner c, S. Tachenov c, E. Werner-Malento c,i, H.J. Wollersheim c, G. Benzoni j, B.B. Blank k, C. Brandau a,c, A.M. Bruce l, F. Camera j, W.N. Catford a, I.J. Cullen a, Zs. Dombradim, E. Estevez n, W. Gelletly a, G. Ilie o,p, J. Jolie o, G.A. Jones a, A. Jungclaus d, M. Kmiecik h, F.G. Kondev q, T. Kurtukian-Nieto n,k, S. Lalkovski l,r, Z. Liu a, A. Maj h, S. Myalski h, M. Pfutzner i, S. Schwertel s, T. Shizuma a,t, A.J. Simons u,a, P.M. Walker a, O. Wieland j, F.R. Xu v

Published
2008

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