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11 results on '"Scholey, Catherine -- 0000-0002-8743-6071"'

1. Collective excitations in the transitional nuclei Re-163 and Re-165

Author

Davis-Merry, T. R., Joss, D. T., Page, R. D., Simpson, J., Paul, E. S., Ali, F. A., Bianco, L., Carroll, R. J., Cederwall, B., Darby, I. G., Drummond, M. C., Eeckhaudt, S., Erturk, S., Gomez-Hornillos, M. B., Grahn, T., Greenlees, P. T., Hadinia, B., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nieminen, P., Nyman, M., O'Donnell, D., Pakarinen, J., Peura, P., Rahkila, P., Revill, J. P., Ruotsalainen, P., Sandzelius, M., Sapple, P. J., Saren, J., Saygi, B., Scholey, C., Sorri, J., Thomson, J., Uusitalo, J., Darby, Iain -- 0000-0003-2091-2616, Cederwall, Bo -- 0000-0003-1771-2656, SAYGI, BAHADIR -- 0000-0001-5406-506X, Pakarinen, Janne -- 0000-0001-8944-8757, O'Donnell, David -- 0000-0002-4710-3803, Scholey, Catherine -- 0000-0002-8743-6071, Grahn, Tuomas -- 0000-0002-6255-2279, Jakobsson, Ulrika -- 0000-0001-9741-141X, Ruotsalainen, Panu -- 0000-0002-8335-452X, Jones, Pete -- 0000-0001-7480-6603, Peura, Pauli -- 0000-0002-8541-0169, and [Davis-Merry, T. R. -- Page, R. D. -- Paul, E. S. -- Ali, F. A. -- Bianco, L. -- Carroll, R. J. -- Darby, I. G. -- Drummond, M. C. -- O'Donnell, D. -- Revill, J. P. -- Sapple, P. J. -- Saygi, B. -- Thomson, J.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Simpson, J. -- Gomez-Hornillos, M. B.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Cederwall, B. -- Hadinia, B.] Alba Nova Ctr, Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden -- [Eeckhaudt, S. -- Grahn, T. -- Greenlees, P. T. -- Jakobsson, U. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Nieminen, P. -- Nyman, M. -- Pakarinen, J. -- Peura, P. -- Rahkila, P. -- Ruotsalainen, P. -- Sandzelius, M. -- Saren, J. -- Scholey, C. -- Sorri, J. -- Uusitalo, J.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Erturk, S.] Nigde Univ, Fen Edebiyat Falkultesi, Fiz Bolumi, Nigde, Turkey -- [Ali, F. A.] Univ Sulaimani, Dept Phys, Sulaimani, Kurdistan Regio, Iraq

Abstract

WOS: 000351510400001, Excited states in the neutron-deficient nuclei (163)(75) Re-88 and (165)(75) Re-90 were populated in the Cd-106(Ni-60, p2n gamma) and Mo-92(Kr-78, 3p2n gamma) fusion-evaporation reactions at bombarding energies of 270 and 380 MeV, respectively.. rays were detected at the target position using the JUROGAM spectrometer while recoiling ions were separated in-flight by the RITU gas-filled recoil separator and implanted in the GREAT spectrometer. The energy level schemes for Re-163 and Re-165 were identified using recoil-decay correlation techniques. At low spin, the yrast bands of these isotopes consist of signature partner bands based on a single pi h(11/2) quasiproton configuration. The bands display large energy splitting consistent with the soft triaxial shape typical of transitional nuclei above N = 82. The configurations of the excited states are proposed within the framework of the cranked shell model., UK Science and Technology Facilities Council; EU 6th Framework Programme, "Integrating Infrastructure Initiative-Transnational Access" [506065]; Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator-Based Physics Programme at JYFL); Academy of Finland [121110, 209430]; Science and Technology Facilities Council [EP/D002257/1, ST/J000108/1, ST/J000094/1, EP/E004385/1, EP/C015266/1, ST/L005670/1, ST/G008671/1, ST/L005689/1], The authors express their gratitude to the staff of the Accelerator Laboratory at the University of Jyvaskyla for their excellent technical support. The authors also wish to thank Paul Morrall of the STFC Daresbury Laboratory for the preparation of the targets used in this work. Financial support for this work was provided by the UK Science and Technology Facilities Council and by the EU 6th Framework Programme, "Integrating Infrastructure Initiative-Transnational Access," Contract No. 506065 (EURONS), and by the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator-Based Physics Programme at JYFL). P.T.G (Grant No. 121110) and C.S. (Grant No. 209430) acknowledge the support of the Academy of Finland.

Published
2015

2. Probing the limit of nuclear existence: Proton emission from 159Re

Author

D. T. Joss, Robert Page, A. Steer, T. Grahn, Steffen Ketelhut, S. Erturk, P. Rahkila, C. Scholey, M. Venhart, Paul Stevenson, Janne Pakarinen, Juha Uusitalo, J. Simpson, B. Gall, Paul Greenlees, Baharak Hadinia, M. Nyman, Iain Darby, Peter M. Jones, A. J. Cannon, S. Juutinen, Matti Leino, A.-P. Leppänen, Jan Sarén, Jim Al-Khalili, R. Julin, S. Eeckhaudt, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Pakarinen, Janne -- 0000-0001-8944-8757, Darby, Iain -- 0000-0003-2091-2616, Stevenson, Paul -- 0000-0003-2645-2569, Scholey, Catherine -- 0000-0002-8743-6071, Jones, Pete -- 0000-0001-7480-6603, Grahn, Tuomas -- 0000-0002-6255-2279, Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- CCLRC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- Nigde Univ, Fen Edebiyat Falkultesi, Fizik Bolumu, Nigde, Turkey -- Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248 4, Slovakia -- Univ Strasbourg 1, CNRS, IN2P3, IPHC, F-67037 Strasbourg 2, France -- Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden, and 0-Belirlenecek

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Si detectors, Proton, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], measured E (p), (t)1 / 2, 01 natural sciences, 7. Clean energy, Nuclear physics, Ep, 0103 physical sciences, Enriched targets, Neutron, Nuclide, Proton emission, Nuclear Experiment, 010306 general physics, 106Cd at 300 MeV beam energy, Physics, Isotope, 010308 nuclear & particles physics, 21.10.Hw, 21.10.Tg, 23.50.+z, 27.70.+q, 58Ni, t1/2, NUCLEAR REACTIONS Ni-58+Cd-106 at 300 MeV beam energy, 13. Climate action, Nuclear reactions, Gas-filled recoil separator, Atomic physics, Nucleon, Measured, Radioactive decay
Abstract

WOS: 000240847400007, The observation of the new nuclide Re-159(75)84 provides important insights into the evolution of single-particle structure and the mass surface in heavy nuclei beyond the proton drip line. This nuclide, 26 neutrons away from the nearest stable rhenium isotope, was synthesised in the reaction Cd-106(Ni-58, p4n) and identified via its proton radioactivity using the RITU gas-filled separator and the GREAT focal-plane spectrometer. Comparisons of the measured proton energy (E-p = 1805 +/- 20 keV) and decay half-life (t(1/2) = 21 +/- 4 mu s) with values calculated using the WKB method indicate that the proton is emitted from an h(11/2) state. The implications of these results for future experimental investigations into even more proton unbound nuclei using in-flight separation techniques are considered. (c) 2006 Elsevier B.V. All rights reserved., Science and Technology Facilities Council [EP/C543157/1, EP/C015371/1, EP/C015266/1, ST/G008671/1]

Published
2006
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3. Precision measurements of proton emission from the ground states of Ta-156 and Re-160

Author

Darby, I. G., Page, R. D., Joss, D. T., Bianco, L., Grahn, T., Judson, D. S., Simpson, J., Eeckhaudt, S., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Leppanen, A-P., Nyman, M., Rahkila, P., Saren, J., Scholey, C., Steer, A. N., Uusitalo, J., Venhart, M., Erturk, S., Gall, B., Hadinia, B., Darby, Iain -- 0000-0003-2091-2616, Scholey, Catherine -- 0000-0002-8743-6071, Jones, Pete -- 0000-0001-7480-6603, Grahn, Tuomas -- 0000-0002-6255-2279, and [Darby, I. G. -- Page, R. D. -- Joss, D. T. -- Bianco, L. -- Grahn, T. -- Judson, D. S.] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England -- [Simpson, J.] Daresbury Lab, STFC, Warrington WA4 4AD, Cheshire, England -- [Eeckhaudt, S. -- Greenlees, P. T. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Leppanen, A-P. -- Nyman, M. -- Rahkila, P. -- Saren, J. -- Scholey, C. -- Steer, A. N. -- Uusitalo, J. -- Venhart, M.] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Erturk, S.] Nigde Univ, Fen Edebiyat Fak, Fiz Bolumu, Nigde, Turkey -- [Gall, B.] ULP Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg 2, France -- [Hadinia, B.] Royal Inst Technol, Alba Nova Ctr, S-10691 Stockholm, Sweden

Abstract

WOS: 000291798600001, The decays of the pi d(3/2) ground states of Ta-156 and Re-160 have been studied in detail using the GREAT spectrometer. More than 7000 Re-160 nuclei were produced in reactions of 290- and 300-MeV Ni-58 ions with an isotopically enriched Cd-106 target and separated in flight using the RITU separator. The proton and alpha decays of the pi d(3/2) level were confirmed and the half-life and branching ratios of this state were determined with improved precision to be t(1/2) = 611 +/- 7 mu s and b(p) = 89 +/- 1% and b(alpha) = 11 +/- 1%, respectively. The alpha-decay branch populated the ground state of Ta-156, allowing improved values for the proton-decay energy and half-life to be obtained (E-p = 1011 +/- 5 keV; t(1/2) = 106 +/- 4 ms). The beta decay of this level was identified for the first time and a branching ratio of b(beta) = 29 +/- 3% was deduced. The spectroscopic factors deduced from these measurements are compared with predictions., UK Science and Technology Facilities Council; Swedish Natural Science Research Council; Academy of Finland [44875]; European Union [RII3-CT-2004-506065, HPMT-CT-2001-00250]; [209430]; [111965]; Science and Technology Facilities Council [ST/J000108/1, ST/F012039/1, ST/G008620/1, ST/J000094/1, EP/C015266/1, EP/C015371/1, ST/G008671/1], The authors thank the technical staff at the University of Jyvaskyla for their excellent support and Paul Morrall from Daresbury Laboratory for making the targets. This work was supported by the UK Science and Technology Facilities Council; the Swedish Natural Science Research Council; the Academy of Finland through the Finnish Centre of Excellence Programme (Project No. 44875 Nuclear and Condensed Matter Physics Programme at JYFL) and support for C.S. (Contract No. 209430) and P.T.G. (Contract No. 111965); the European Union Sixth Framework Contract EURONS (Contract No. RII3-CT-2004-506065); and the European Union Marie Curie Programme (Contract No. HPMT-CT-2001-00250).

Published
2011

4. In-beam gamma-ray spectroscopy of the N=85 isotones W-159 and Re-160

Author

Sapple, P. J., Page, R. D., Joss, D. T., Bianco, L., Grahn, T., Pakarinen, J., Thomson, J., Simpson, J., O'Donnell, D., Erturk, S., Greenlees, P. T., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nyman, M., Peura, P., Puurunen, A., Rahkila, P., Ruotsalainen, P., Saren, J., Scholey, C., Uusitalo, J., Scholey, Catherine -- 0000-0002-8743-6071, Pakarinen, Janne -- 0000-0001-8944-8757, O'Donnell, David -- 0000-0002-4710-3803, Ruotsalainen, Panu -- 0000-0002-8335-452X, Jones, Pete -- 0000-0001-7480-6603, Grahn, Tuomas -- 0000-0002-6255-2279, Jakobsson, Ulrika -- 0000-0001-9741-141X, Peura, Pauli -- 0000-0002-8541-0169, and [Sapple, P. J. -- Page, R. D. -- Joss, D. T. -- Bianco, L. -- Grahn, T. -- Pakarinen, J. -- Thomson, J.] Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Simpson, J. -- O'Donnell, D.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Erturk, S.] Nigde Univ, Fen Edebiyat Fak, Fiz Bolumu, TR-51100 Nigde, Turkey -- [Greenlees, P. T. -- Jakobsson, U. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Nyman, M. -- Peura, P. -- Puurunen, A. -- Rahkila, P. -- Ruotsalainen, P. -- Saren, J. -- Scholey, C. -- Uusitalo, J.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland

Abstract

WOS: 000296522000001, Excited states have been identified in the isotones W-159(74) and Re-160(75), which were produced in fusion-evaporation reactions of a beam of 310-MeV Ni-58 ions with an isotopically enriched Cd-106 target. The strongest gamma-ray transitions in W-159 and Re-160 are interpreted as continuing the regular sequence of states identified in lighter N = 85 isotones that are built upon 9/2(-) and 10(+) states, respectively. The half-life of Hf-155, the beta-decaying daughter of the a decay of W-159, was measured with improved precision to be 840 +/- 30 ms., UK Science and Technology Facilities Council; EU [RII3-CT-2004-506065 (EURONS)]; Academy of Finland [213503, 209430, 111965]; Science and Technology Facilities Council [ST/J000108/1, ST/G008620/1, EP/C015371/1, ST/J000094/1, EP/C015266/1, ST/G008671/1], The authors thank the technical staff at the University of Jyvaskyla for their excellent support and Paul Morrall for making the targets. This work has been supported by the UK Science and Technology Facilities Council; by the EU 6th Framework Programme "Integrating Infrastructure Initiative Transnational Access," Contract No. RII3-CT-2004-506065 (EURONS); and by the Academy of Finland under the Finnish Centre of Excellence Programme 2006-2011 (Nuclear and Accelerator Based Physics Programme at JYFL), Contract No. 213503. C. S. (Contract No. 209430) and P. T. G. (Contract No. 111965) acknowledge the support of the Academy of Finland. We thank the GAMMAPOOL European Spectroscopy Resource for the loan of germanium detectors for JUROGAM, and we thank the French CNRS/IN2P3 for the use of the TNT2 digital electronics.

Published
2011

5. Discovery of W-157 and Os-161

Author

Bianco, L, Page, RD, Darby, IG, Joss, DT, Simpson, J, Al-Khalili, JJ, Cannon, AJ, Cederwall, B, Eeckhaudt, S, Erturk, S, Gall, B, Hornillos, MBG, Grahn, T, Greenlees, PT, Hadinia, B, Heyde, Kristiaan, Jakobsson, U, Jones, PM, Julin, R, Juutinen, S, Ketelhut, S, Labiche, M, Leino, M, Leppanen, AP, Nyman, M, O'Donnell, D, Paul, ES, Petri, M, Peura, P, Puurunen, A, Rahkila, P, Ruotsalainen, P, Sandzelius, M, Sapple, PJ, Saren, J, Scholey, C, Smirnova, NA, Steer, AN, Stevenson, PD, Suckling, EB, Thomson, J, Uusitalo, J, Venhart, M, Scholey, Catherine -- 0000-0002-8743-6071, Stevenson, Paul -- 0000-0003-2645-2569, O'Donnell, David -- 0000-0002-4710-3803, Petri, Marina -- 0000-0002-3740-6106, Cederwall, Bo -- 0000-0003-1771-2656, Darby, Iain -- 0000-0003-2091-2616, Jones, Pete -- 0000-0001-7480-6603, Jakobsson, Ulrika -- 0000-0001-9741-141X, Gomez Hornillos -- 0000-0002-9282-9195, Grahn, Tuomas -- 0000-0002-6255-2279, Peura, Pauli -- 0000-0002-8541-0169, and [Bianco, L. -- Page, R. D. -- Darby, I. G. -- Joss, D. T. -- Grahn, T. -- Paul, E. S. -- Petri, M. -- Sapple, P. J. -- Thomson, J.] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England -- [Simpson, J. -- Hornillos, M. B. Gomez -- Labiche, M. -- O'Donnell, D.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Al-Khalili, J. J. -- Cannon, A. J. -- Stevenson, P. D. -- Suckling, E. B.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- [Cederwall, B. -- Hadinia, B. -- Sandzelius, M.] Royal Inst Technol, Alba Nova Ctr, S-10691 Stockholm, Sweden -- [Eeckhaudt, S. -- Greenlees, P. T. -- Jakobsson, U. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Leppanen, A. -P. -- Nyman, M. -- Peura, P. -- Puurunen, A. -- Rahkila, P. -- Ruotsalainen, P. -- Saren, J. -- Scholey, C. -- Steer, A. N. -- Uusitalo, J. -- Venhart, M.] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Erturk, S.] Nigde Univ, Fen Edebiyat Fak, Fizik Bolumu, Nigde, Turkey -- [Gall, B.] ULP Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg 2, France -- [Heyde, K.] Univ Ghent, Vakgrp Subatomaire Stralingsfysika, B-9000 Ghent, Belgium -- [Smirnova, N. A.] CEN Bordeaux Gradignan, F-33175 Gradignan, France

Subjects
Deduced neutron single-particle configurations in Os-161, W-157, Si detectors, NUCLEI, t(1/2), TOTAL DATA READOUT, Measured E alpha, t(1/2), Shell model calculations, NUCLEAR REACTIONS Ni-58+Cd-106 at 290, Physics and Astronomy, Measured E alpha, Deduced neutron single-particle configurations in Os-161, W-157, NEUTRON-DEFICIENT ISOTOPES, gas-filled recoil separator, PROTON DRIP-LINE, 310 MeV beam energy, NUCLEAR REACTIONS Ni-58+Cd-106 at 290, 300, 310 MeV beam energy, gas-filled recoil separator, Si detectors
Abstract

WOS: 000278933900003, The nuclides W-157 and Os-161 have been discovered ill reactions of Ni-58 ion beams with a Cd-106 target. The Os-161 alpha-decay energy and half-life were 6890 +/- 12 keV and 640 +/- 60 mu s. The daughter W-157 nuclei beta-decayed with a half-life of 275 +/- 40 ms, populating both low-lying alpha-decaying states in Ta-157, which is consistent with a 7/2(-) ground state in W-157. Fine structure observed in the alpha decay of Os-161 places the lowest excited state in W-157 with 1(pi) = 9/2(-) at 318 +/- 30 key. The branching ratio of 5.5(-2.2)(+3.1)% indicates that Os-161 also has a 7/2(-) ground state. Shell-model calculations analysing the effects of monopole shifts and a tensor force on the relative energies of 2f(7/2) and 1h(9/2) neutron states in N = 83 isotones are presented. (C) 2010 Elsevier B.V. All rights reserved., Jyvaskyla; United Kingdom Science and Technology Facilities Council; Swedish Natural Science Research Council; Academy of Finland [44875, 209430, 111965]; European Union [R113-CT-2004-506065, HPMT-CT-2001-00250]; Science and Technology Facilities Council [EP/C015266/1, EP/C015371/1, ST/G008671/1, ST/F012012/1, ST/J000108/1, EP/C543157/1, ST/G008620/1, ST/F012039/1], We thank the accelerator staff at Jyvaskyla for their excellent support and Paul Morrall from Daresbury Laboratory for making the targets. This work was supported by the United Kingdom Science and Technology Facilities Council; the Swedish Natural Science Research Council; the Academy of Finland through the Finnish Centre of Excellence Programme (project 44875 Nuclear and Condensed Matter Physics Programme at JYFL) and support for C.S. (contract 209430) and P.T.G. (contract 111965); the European Union Sixth Framework contract EURONS (R113-CT-2004-506065) and the European Union Marie Curie Programme (contract HPMT-CT-2001-00250).

Published
2010

6. Isomeric and ground-state properties of Pt-171(78), Os-167(76), and W-163(74)

Author

Scholey, C., Andgren, K., Bianco, L., Cederwall, B., Darby, I. G., Eeckhaudt, S., Erturk, S., Hornillos, M. B. Gomez, Grahn, T., Greenlees, P. T., Hadinia, B., Ideguchi, E., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Leppanen, A.-P., Nieminen, P., Niikura, M., Nyman, M., O'Donnell, D., Page, R. D., Pakarinen, J., Rahkila, P., Saren, J., Sandzelius, M., Simpson, J., Sorri, J., Thomson, J., Uusitalo, J., Venhart, M., Cederwall, Bo -- 0000-0003-1771-2656, Darby, Iain -- 0000-0003-2091-2616, Niikura, Megumi -- 0000-0002-5940-2667, Scholey, Catherine -- 0000-0002-8743-6071, Pakarinen, Janne -- 0000-0001-8944-8757, O'Donnell, David -- 0000-0002-4710-3803, Grahn, Tuomas -- 0000-0002-6255-2279, Jones, Pete -- 0000-0001-7480-6603, Gomez Hornillos -- 0000-0002-9282-9195, and [Scholey, C. -- Darby, I. G. -- Eeckhaudt, S. -- Grahn, T. -- Greenlees, P. T. -- Jones, P. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Leppanen, A.-P. -- Nieminen, P. -- Nyman, M. -- Pakarinen, J. -- Rahkila, P. -- Saren, J. -- Sandzelius, M. -- Sorri, J. -- Uusitalo, J. -- Venhart, M.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Andgren, K. -- Cederwall, B. -- Hadinia, B. -- Sandzelius, M.] Royal Inst Technol, S-10691 Stockholm, Sweden -- [Bianco, L. -- Darby, I. G. -- Joss, D. T. -- Page, R. D. -- Thomson, J.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Erturk, S.] Nigde Univ, Dept Phys, TR-51200 Nigde, Turkey -- [Hornillos, M. B. Gomez -- O'Donnell, D. -- Simpson, J.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Ideguchi, E. -- Niikura, M.] Univ Tokyo, Ctr Nucl Study, Wako, Saitama 3510198, Japan -- [Venhart, M.] Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia

Abstract

WOS: 000274002700018, Decay paths, half-lives, and excitation energies of the i(13/2) bandheads of the neutron-deficient nuclei Pt-171, Os-167, and W-163 have been established for the first time. Gamma-ray transitions, X-rays, and internal conversion electrons have been observed, allowing internal-conversion coefficients to be measured and B(M2) reduced transition probabilities to be extracted. These results elucidate the low-lying single-quasiparticle structures and give the energy level spacings between the nu f(7/2), nu h(9/2), and nu i(13/2) quasineutron states for all three nuclei. Moreover, ground-state spin assignments have been made for the first time, along with the measurement of the alpha-decay branching ratio for Pt-171. The decay paths of the i(13/2) bandheads were followed by favored alpha decays, indicating that all three nuclei have the same I-pi = 7/2(-) ground state., Academy of Finland [44875, 213503]; Swedish Research Council; Goran Gustafsson Foundation; EU [HPRI-CT-1999-00044]; EXOTAG [HPRI-1999-CT-50017]; UK Engineering and Physical Sciences Research Council and Science; Technology Facilities Council [209430, 121110, 111965]; Slovak Research and Development Agency [APVV-20-006205]; Science and Technology Facilities Council [EP/C543157/1, EP/C015371/1, EP/C015266/1, ST/J000108/1, ST/G008671/1, ST/F012039/1, ST/G008620/1], This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme (Project Nos. 44875 and 213503), the Swedish Research Council, the Goran Gustafsson Foundation, the EU FP5(HPRI-CT-1999-00044) and EXOTAG (HPRI-1999-CT-50017), through the EU-FP6-I3 project EURONS (RII3-CT-2004-506065), and the UK Engineering and Physical Sciences Research Council and Science and Technology Facilities Council. C. S. (209430), P.N. (121110), and P. T. G. (111965) acknowledge the support of the Academy of Finland; V. M., M. S., and I. G. D. acknowledge support from the EC Marie Curie Actions grant; V. M. acknowledges the Slovak Research and Development Agency (Contract No. APVV-20-006205); and E. I. and M. N. support from the JSPS Core-to-Core Program, International Research Network for Exotic Femto Systems. We thank the UK/France (STFC/IN2P3) Loan Pool and GAMMAPOOL European Spectroscopy Resource for the loan of the detectors for JUROGAM and GSI for the loan of the VEGA (1/4018/07) detectors.

Published
2010

7. Competing quasiparticle configurations in W-163

Author

E. S. Paul, P. Rahkila, J. Simpson, Jan Sarén, David O'Donnell, S. Erturk, Paul Greenlees, Matti Leino, P. J. Sapple, M. B. Gomez-Hornillos, Juha Uusitalo, Janne Pakarinen, Peter M. Jones, R. D. Page, T. Grahn, Mikael Sandzelius, Steffen Ketelhut, C. Scholey, L. Bianco, N. Rowley, S. Eeckhaudt, Bo Cederwall, M. Nyman, J. Thomson, R. Julin, Juha Sorri, Baharak Hadinia, Iain Darby, S. Juutinen, D. T. Joss, Pakarinen, Janne -- 0000-0001-8944-8757, Darby, Iain -- 0000-0003-2091-2616, O'Donnell, David -- 0000-0002-4710-3803, Scholey, Catherine -- 0000-0002-8743-6071, Cederwall, Bo -- 0000-0003-1771-2656, Jones, Pete -- 0000-0001-7480-6603, Gomez Hornillos -- 0000-0002-9282-9195, Grahn, Tuomas -- 0000-0002-6255-2279, [Thomson, J. -- Joss, D. T. -- Paul, E. S. -- Bianco, L. -- Darby, I. G. -- Grahn, T. -- Page, R. D. -- Pakarinen, J. -- Sapple, P. J.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Scholey, C. -- Eeckhaudt, S. -- Greenlees, P. T. -- Jones, P. -- Julin, R. -- Juutinen, S. -- Leino, M. -- Nyman, M. -- Rahkila, P. -- Sandzelius, M. -- Saren, J. -- Sorri, J. -- Uusitalo, J.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Simpson, J. -- Gomez-Hornillos, M. B. -- O'Donnell, D. -- Rowley, N.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Erturk, S.] Nigde Univ, Fen Edebiyat Fak, Fizik Bolumu, TR-51100 Nigde, Turkey -- [Cederwall, B. -- Hadinia, B. -- Sandzelius, M.] Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden, and 0-Belirlenecek

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Neutron emission, Stable isotope ratio, Excited state, Quasiparticle, Parity (physics), Nuclide, Atomic physics, 0-Belirlenecek, Radioactive decay
Abstract

WOS: 000274002700019, Excited states in the neutron-deficient nuclide W-163 were investigated using the Cd-106(Ni-60, 2pn)W-163 reaction at a beam energy of 270 MeV. The level scheme for W-163 was extended significantly with the observation of five new band structures. The yrast band based on a 13/2(+) isomeric state is extended up to (57/2(+)). Two band structures were established on the 7/2(-) ground state. Quasiparticle configuration assignments for the new band structures were made on the basis of cranked Woods-Saxon shell-model calculations. The results reported in this article suggest that the negative-parity nu(f(7/2), h(9/2)) orbitals are responsible for the first rotational alignment in the yrast band., UK Science and Technology Facilities Council (STFC); EU [506065]; Academy of Finland; Swedish Research Council [111965]; C. S. [209430]; Science and Technology Facilities Council [EP/C015266/1, EP/C015371/1, ST/G008620/1, ST/J000108/1, ST/F012039/1, EP/C543157/1, ST/G008671/1], Financial support for this work has been provided by the UK Science and Technology Facilities Council (STFC), the EU sixth Framework Programme, Integrating Infrastructure Initiative-Transnational Access, (EURONS, Contract No. 506065), the Academy of Finland under the Finnish Centre of Excellence Programme 2006-2011, and by the Swedish Research Council. P. T. G. (Contract No. 111965) and C. S. (Contract No. 209430) acknowledge the support of the Academy of Finland. We thank the UK/France (STFC/IN2P3) Loan Pool and the GAMMAPOOL European Spectroscopy Resource for the loan of detectors for JUROGAM and GSI for the loan of the VEGA detectors. The authors express their gratitude to the staff of the Accelerator Laboratory at the University of Jyvaskyla a for their excellent technical support. The authors also thank Paul Morrall of Daresbury Laboratory for preparation of the Cd targets.

Published
2010

8. gamma-ray spectroscopy of Ta-163

Author

Sandzelius, M., Cederwall, B., Ganioglu, E., Thomson, J., Andgren, K., Bianco, L., Back, T., Eeckhaudt, S., Ertuerk, S., Hornillos, M. B. Gomez, Grahn, T., Greenlees, P. T., Hadinia, B., Johnson, A., Jones, P. M., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Khaplanov, A., Leino, M., Nyman, M., Page, R. D., Rahkila, P., Saren, J., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Wyss, R., Cederwall, Bo -- 0000-0003-1771-2656, Scholey, Catherine -- 0000-0002-8743-6071, Wyss, Ramon A. -- 0000-0001-6899-2964, Grahn, Tuomas -- 0000-0002-6255-2279, Jones, Pete -- 0000-0001-7480-6603, Back, Torbjorn -- 0000-0003-1996-0805, and [Sandzelius, M. -- Cederwall, B. -- Ganioglu, E. -- Andgren, K. -- Back, T. -- Hadinia, B. -- Johnson, A. -- Khaplanov, A. -- Wyss, R.] Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden -- [Sandzelius, M. -- Eeckhaudt, S. -- Grahn, T. -- Greenlees, P. T. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Nyman, M. -- Rahkila, P. -- Saren, J. -- Scholey, C. -- Sorri, J. -- Uusitalo, J.] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Thomson, J. -- Bianco, L. -- Joss, D. T. -- Page, R. D.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Ertuerk, S. -- Hornillos, M. B. Gomez -- Simpson, J.] CCLRC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Ganioglu, E.] Univ Istanbul, Fac Sci, Dept Phys, TR-34459 Istanbul, Turkey -- Nigde Univ, Fac Sci, Dept Phys, TR-51200 Nigde, Turkey

Abstract

WOS: 000272313000030, Excited states in Ta-163 have been identified for the first time using the Cd-106(Ni-60,3p) fusion evaporation reaction. gamma rays were detected using the JUROGAM gamma-ray spectrometer and recoil discrimination was achieved using the recoil ion transport unit (RITU) gas-filled separator in conjunction with the GREAT spectrometer situated at the focal plane of the RITU. The yrast states are assigned to a strongly coupled rotational band based on a pi h(11/2) configuration. This structure exhibits large signature splitting at low spins that disappears after the paired band crossing because of the alignment of a pair of i(13/2) neutrons. This effect is ascribed to triaxial shape changes induced by the core-polarizing properties of the deformation-aligned h(11/2) proton and the rotation-aligned i(13/2) neutrons. Two additional strongly coupled band structures have been established and are discussed in terms of octupole-vibrational and two-quasiparticle excitations built on the yrast structure. The experimental results are compared with predictions from cranked-shell-model and total-Routhian-surface calculations., Swedish Research Council; Goran Gustafsson Foundation; Academy of Finland under the Finnish Centre of Excellence Programme 2006-2011 [44875]; UK Science and Technology Facilities Council; European Union [HPRI-CT-1999-00044]; NordForsk [070315]; Turkish Atomic Energy Authority (TAEK) [DPT-04K120100-4]; Finnish Academy [209430-111965]; UK/France [EPSRC/IN2P3]; Science and Technology Facilities Council [ST/G008620/1, EP/C015266/1, ST/F012039/1, ST/G008671/1, EP/C015371/1, ST/J000108/1, EP/C543157/1], The authors thank the crew at the Accelerator Laboratory at the University of Jyvraskyla for their excellent technical support. Further support for this work has been provided by the Swedish Research Council, the Goran Gustafsson Foundation, the Academy of Finland under the Finnish Centre of Excellence Programme 2006-2011 (Project No. 44875, Nuclear and Condensed Matter Physics Programme at JYFL), the UK Science and Technology Facilities Council and the European Union Fifth Framework Programme "Improving Human Potential-Access to Research Infrastructure" (Contract No. HPRI-CT-1999-00044), the Nordic Infrastructure support by NordForsk (Project 070315), and the Turkish Atomic Energy Authority (TAEK) under Project No. DPT-04K120100-4. C. S. and P. T. G. acknowledge support from the Finnish Academy (Contract No. 209430-111965). We also thank the UK/France (EPSRC/IN2P3) Detector Loan Pool and the EUROBALL owners committee (gamma-pool network) for the loan of the EUROGAM detectors of JUROGAM and GSI for the loan of two additional VEGA clover detectors.

Published
2009

9. Probing single-particle structures beyond the proton drip line

Author

R. D. Page, L. Bianco, I. G. Darby, D. T. Joss, T. Grahn, R.-D. Herzberg, J. Pakarinen, J. Thomson, J. Uusitalo, S. Eeckhaudt, P. T. Greenlees, P. M. Jones, R. Julin, S. Juutinen, S. Ketelhut, M. Leino, A.-P. Leppänen, M. Nyman, P. Rahkila, J. Sarén, C. Scholey, A. Steer, M. Venhart, J. Simpson, J. S. Al-Khalili, A. J. Cannon, P. D. Stevenson, S. Ertürk, B. Gall, B. Hadinia, Lídia S. Ferreira, Paramasivan Arumugan, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Lídia S. Ferreira, Paramasivan Arumugan, Ferreira, LS, Arumugam, P, Scholey, Catherine -- 0000-0002-8743-6071, Stevenson, Paul -- 0000-0003-2645-2569, Pakarinen, Janne -- 0000-0001-8944-8757, Grahn, Tuomas -- 0000-0002-6255-2279, Jones, Pete -- 0000-0001-7480-6603, and [Page, R. D. -- Bianco, L. -- Darby, I. G. -- Joss, D. T. -- Grahn, T. -- Herzberg, R. -D. -- Pakarinen, J. -- Thomson, J.] Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Uusitalo, J. -- Eeckhaud, S. -- Greenlees, P. T. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Leppanen, A. -P. -- Nyman, M. -- Rahkila, P. -- Saren, J. -- Scholey, C. -- Steer, A. -- Venhart, M.] Univ jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Simpson, J.] STFC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Al-Khalili, J. S. -- Cannon, A. J. -- Stevenson, P. D.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- [Erturk, S.] Nigde Univ, Nigde, Turkey -- [Gall, B.] ULP Strasbourg, CNRS IN2P, IPHC, F-67037 Strasbourg 2, France -- [Hadinia, B.] AlbaNova Univ Ctr, Royal Inst Technol, S-10691 Stockholm, Sweden

Subjects
Proton, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, nuclei with mass number 150 to 189, Neutron, alpha-decay, radioactive decay periods, Proton emission, branching ratio. Re-159, 010306 general physics, Nuclear Experiment, Physics, RADIOACTIVITY Re-159(alpha)[from Cd-106(Ni-58,p4n)], Ta-155 deduced levels, Ta-155(p)[from Re-159 a decay], 010308 nuclear & particles physics, Alpha particle, previous Ta-155 study, Charged particle, comparisons with neighbouring nuclides, measured E-alpha, E-p, T-1/2, 23.50.+z, 23.60.+e, 27.70.+q, J, pi configurations, Alpha decay, Atomic physics, Nucleon, Radioactive decay, proton emission decay
Abstract

International Conference on Proton Emitting Nuclei and Related Topics -- JUN 17-23, 2007 -- Lisbon, PORTUGAL, WOS: 000252267300021, Single-particle energies have been investigated in the closed neutron shell proton emitter Ta-155. The Ta-155 nuclei were populated through the alpha decay of Re-159, which has been observed for the first time. The (159)Rc nuclei were produced in reactions of 300 MeV Ni-58 ions with an isotopically enriched Cd-106 target, separated in-flight using the RITU separator and implanted into the GREAT spectrometer. The Re-159 a decay emanates from the proton-emitting pi h(11/2) state and populates a state in Ta-155 which decays by the emission of a proton from a pi h(11/2) orbital. The results fit in with the systematics of proton and alpha-particle separation energies in the region, but disagree with the previously reported decay properties of Ta-155., Fundacao Ciencia & Tecnol, Minist Ciencia & Tecnol, Fundacao Calouste Gulbenklan, Fundacao Luso Americana, UK Engineering and Physical Sciences Research Council; Swedish Natural Science Research Council; Academy of Finland under the Firmish Centre of Excellence Programme (project 44875 Nuclear and Condensed Matter Physics Programme at JYFL); European Union Sixth Framework contract EURONS [RII3-CT-2004-506065]; European Union Marie Curie Programme [HPMT-CT-2001-00250], The authors would like to thank the technical staff at the Accelerator Laboratory at the University of Jyvaskyla for their excellent support and to Paul Morrall from Daresbury Laboratory for making the targets. This work has been supported by the UK Engineering and Physical Sciences Research Council; the Swedish Natural Science Research Council; the Academy of Finland under the Firmish Centre of Excellence Programme (project 44875 Nuclear and Condensed Matter Physics Programme at JYFL); the European Union Sixth Framework contract EURONS (contract RII3-CT-2004-506065) and the European Union Marie Curie Programme (contract HPMT-CT-2001-00250).

Published
2007
Full Text
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10. Discovery of the proton emitting nucleus Re-159

Author

Joss, D. T., Darby, I. G., Page, R. D., Uttsitalo, J., Eeckhaudt, S., Grahn, T., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, A., Leppanen, A. -P., Nyman, A., Pakarinen, J., Rahkila, P., Saren, J., Scholey, C., Steer, Ax, Al-Khafili, J. S., Cannon, A. J., Stevenson, P. D., Erturk, S., Gall, B., Hadinia, B., Venhart, A., Simpson, J., Ferreira, LS, Arumugam, P, Scholey, Catherine -- 0000-0002-8743-6071, Pakarinen, Janne -- 0000-0001-8944-8757, Stevenson, Paul -- 0000-0003-2645-2569, Jones, Pete -- 0000-0001-7480-6603, Grahn, Tuomas -- 0000-0002-6255-2279, and [Joss, D. T. -- Darby, I. G. -- Page, R. D. -- Grahn, T. -- Pakarinen, J.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Joss, D. T. -- Simpson, J.] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Uttsitalo, J. -- Eeckhaudt, S. -- Greenlees, P. T. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, A. -- Leppanen, A. -P. -- Nyman, A. -- Pakarinen, J. -- Rahkila, P. -- Saren, J. -- Scholey, C. -- Steer, Ax] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Al-Khafili, J. S. -- Cannon, A. J. -- Stevenson, P. D.] Univ Surrey, Dept Phys, Guildford GU2 5XH, Surrey, England -- [Erturk, S.] Nigde Univ, Nigde, Turkey -- [Gall, B.] ULP Strasbourg, F-67037 Strasbourg, France -- [Hadinia, B.] Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden -- [Venhart, A.] Comenius Univ, Dept Nuclear Phys & Biophys, Bratislava 81806, Slovakia

Subjects
measured Ep, t(1/2), NUCLEAR REACTIONS Ni-58+Cd-106 at 300 MeV beam energy, Si detectors, gas-filled recoil separator, enriched targets
Abstract

International Conference on Proton Emitting Nuclei and Related Topics -- JUN 17-23, 2007 -- Lisbon, PORTUGAL, WOS: 000252267300004, The observation of the new nuclide Re-159 provides important insights into the evolution of single-particle structure in heavy nuclei beyond the proton drip line. The nuclide Re-159 was synthesised in the reaction Cd-106(Ni-58, p4n) and identified via its proton radioactivity using the RITU gas-filled separator and the GREAT focal-plane spectrometer. Comparisons of the measured proton energy (E-p = 1805 +/- 20 keV) and decay half-life (t(1/2) = 21 +/- 4 ps) with values calculated using the YIKB method indicate that the proton is emitted from an h(11/2) state. The implications of these results for future experimental investigations into even more proton unbound Re isotopes using in-flight separation techniques are considered., Fundacao Ciencia & Tecnol, Minist Ciencia & Tecnol, Fundacao Calouste Gulbenklan, Fundacao Luso Americana

Published
2007

11. Decay of the high-spin isomer in 160Re: Changing single-particle structure beyond the proton drip line

Author

Matti Leino, D. S. Judson, Robert Page, A.-P. Leppänen, B. Gall, Juha Uusitalo, M. Nyman, Jan Sarén, J. Simpson, C. Scholey, T. Grahn, Steffen Ketelhut, L. Bianco, S. Erturk, D. T. Joss, R. J. Cooper, Paul Greenlees, M. Venhart, Peter M. Jones, P. Rahkila, S. Eeckhaudt, Rauno Julin, Baharak Hadinia, Iain Darby, S. Juutinen, A. Steer, 0-Belirlenecek, Darby, Iain -- 0000-0003-2091-2616, Scholey, Catherine -- 0000-0002-8743-6071, Jones, Pete -- 0000-0001-7480-6603, Grahn, Tuomas -- 0000-0002-6255-2279, and [Darby, I. G.] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium -- [Darby, I. G. -- Page, R. D. -- Joss, D. T. -- Bianco, L. -- Cooper, R. J. -- Grahn, T. -- Judson, D. S.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Simpson, J.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Eeckhaudt, S. -- Grahn, T. -- Greenlees, P. T. -- Jones, P. M. -- Julin, R. -- Juutinen, S. -- Ketelhut, S. -- Leino, M. -- Leppanen, A. -P. -- Nyman, M. -- Rahkila, P. -- Saren, J. -- Scholey, C. -- Steer, A. N. -- Uusitalo, J. -- Venhart, M.] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland -- [Erturk, S.] Nigde Univ, Fen Ebebiyat Falkultesi, Fiz Bolumu, Nigde, Turkey -- [Gall, B.] ULP Strasbourg, CNRS, IN2P3, IPHC, F-67037 Strasbourg 2, France -- [Hadinia, B.] Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Proton, ta114, Gas-filled recoil separator, Si and Ge strip detectors, NUCLEAR REACTIONS Ni-58+Cd-106 at 290, 300 MeV beam energy, enriched targets, Measured E gamma, t1/2, Particle, Neutron, Nuclear reactions, Atomic physics, Proton emission, Ground state, Measured, Line (formation), Spin-½
Abstract

WOS: 000286708700015, A new high-spin isomeric state (t(1/2) = 2.8 +/- 0.1 mu s) in Re-160 has been identified. This high-spin isomer is unique in that it only decays by gamma-decay and not by proton or alpha-particle emission as is the case in every other proton emitter between Z = 64 and 80. Shell model calculations indicate how the convergence of the h(9/2) and f(7/2) neutron levels in this region could open up a gamma-decay path from the high-spin isomer to the low-spin ground state of 160Re. providing a natural explanation for this anomalous absence of charged-particle emission. The consequences of these observations for future searches for proton emission from even more exotic nuclei and in-beam spectroscopic studies are considered. (C) 2010 Elsevier B.V. All rights reserved., UK Science and Technology Facilities Council; Swedish Natural Science Research Council; Academy of Finland [44875, 209430, 111965]; European Union [RII3-CT-2004-506065, HPMT-CT-2001-00250]; Science and Technology Facilities Council [ST/G008671/1, ST/J000108/1, EP/C015371/1, ST/J000094/1, EP/C015266/1, ST/G008620/1, ST/F012039/1], The authors thank the technical staff at the University of Jyvaskyla for their excellent support, Paul Morrall for making the targets and Witek Nazarewicz for stimulating discussions. This work was supported by the UK Science and Technology Facilities Council; the Swedish Natural Science Research Council; the Academy of Finland through the Finnish Centre of Excellence Programme (project 44875 Nuclear and Condensed Matter Physics Programme at JYFL) and support for C.S. (contract 209430) and P.T.G. (contract 111965); the European Union Sixth Framework contract EURONS (RII3-CT-2004-506065) and the European Union Marie Curie Programme (contract HPMT-CT-2001-00250).

Published
2011

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