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4 results on '"Neil Rowley"'

1. Isomeric states in 253No

Author

A. Minkova, O. Dorvaux, Louise Stuttge, Neil Rowley, Yu. Ts. Oganessian, A. Lopez-Martens, Sunniva Siem, A. Korichi, M. L. Chelnokov, D. Curien, André Larsen, A. P. Kabachenko, Alexey Belozerov, S. Sharo, B. Gall, A. I. Svirikhin, R. N. Sagaidak, K. Hauschild, V. A. Gorshkov, M. Rousseau, A. G. Popeko, Ch. Briançon, Francis Hanappe, V. I. Chepigin, Magne Guttormsen, O. N. Malyshev, Alexander Yeremin, Pierre Désesquelles, Ch. Theisen, N. U. H. Syed, F. Khalfallah, A. Shutov, 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), 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), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), financement du CNRS/IN2P3, du JINR, du Russian Foundation for Basic Research, des programmes de coopération JINR-Allemagne, JINR-Pologne et JINR-Slovaquie, du Norwegian Research Council, du Bulgarian National Foundation, GABRIELA, and 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)

Subjects
Physics, Nuclear and High Energy Physics, noyaux lourds, 010308 nuclear & particles physics, Hadron, 21.10.-k 21.10.Tg 23.20.Lv 23.30.Nx, mesure de temps de vie, Parity (physics), Electron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, spectrosocpie gamma et électrons de conversion, Crystallography, 0103 physical sciences, Atomic physics, 010306 general physics, Spectroscopy, Ground state
Abstract

6 pages; International audience; Isomeric states in 253No have been investigated by conversion-electron and gamma-ray spectroscopy with the GABRIELA detection system. The 31 micro second isomer reported more than 30 years ago is found to decay to the ground state of 253No by the emission of a 167 keV M2 transition. The spin and parity of this low-lying isomeric state are established to be 5/2+. The presence of another longer-lived isomeric state is also discussed.

Published
2007

2. Fusion-evaporation cross-sections for 48Ca + 154Sm near the Coulomb barrier

Author

Fernando Scarlassara, F. Haas, A. Gadea, Y. W. Wu, B. R. Behera, Suzana Szilner, I. M. Itkis, R. N. Sagaidak, S. Courtin, A. Yu. Chizhov, G. N. Kniajeva, A. M. Stefanini, S. Beghini, L. Corradi, E. M. Kozulin, A. Latina, V. M. Voskressensky, E. Fioretto, Neil Rowley, M. Trotta, N. A. Kondratiev, I. V. Pokrovskiy, G. Montagnoli, Institut de Recherches Subatomiques (IReS), and 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)

Subjects
Physics, Nuclear and High Energy Physics, Fusion, Range (particle radiation), Hadron, Evaporation, Nuclear fusion, Coulomb barrier, Prolate spheroid, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Deformation (engineering), Atomic physics, 25.70.-z - Low and intermediate energy heavy-ion reactions. 25.70.Jj - Fusion and fusion-fission reactions
Abstract

Measurements of fusion-evaporation cross-sections for the system 48Ca + 154Sm have been performed in the sub- and near-barrier energy range. Barrier-passing cross-sections have been obtained by adding recently measured capture-fission cross-sections at the same energies, and the barrier distribution for capture has been extracted. The data have been analyzed within a coupled-channel model, and a large subbarrier cross-section enhancement is observed, due to the ground-state prolate deformation of 154Sm. The 48Ca + 154Sm capture cross-sections are compared to existing data on 16O + 186W fusion, leading to the same CN, where a few higher-energy points have also been measured. The evaporation residue cross-sections for the two systems above the barrier indicate that complete fusion is inhibited for 48Ca + 154Sm by ≈ 40% in that energy region, with respect to 16O + 186W.

Published
2005

3. The low-spin structure of 115Xe

Author

A. Lopez-Martens, O. Stezowski, J.C. Lisle, B. J. Varley, H. C. Scraggs, John Durell, A. J. Boston, C Finck, Neil Rowley, P.J. Dagnall, F. Hannachi, F. Haas, J.C. Merdinger, F. Hoellinger, J. P. Vivien, E. S. Paul, B. J. P. Gall, B. Haas, and S. Courtin

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Spectrometer, Excited state, Atomic physics, Spin structure, Electronic band structure, Charged particle, Excitation, Spectral line
Abstract

The low-spin band structure of neutron-deficient 115 54Xe has been studied following a low-energy (212.3 MeV) 60Ni(58Ni,2pnγ) reaction performed at IReS, Strasbourg, with the Garel+ spectrometer. The relative excitation energies of νh11/2 (isomeric), νg7/2, and νd5/2 bandheads have been established.

Published
2000

4. The low-spin structure of

Author

Neil Rowley, B. Haas, J.P. Vivien, S. Courtin, O. Stezowski, F. Haas, John Durell, B. J. Varley, P. J. Dagnall, H. C. Scraggs, A. J. Boston, F. Hoellinger, C Finck, J.C. Merdinger, B. J. P. Gall, F. Hannachi, A. Lopez-Martens, E. S. Paul, and J.C. Lisle

Subjects
Physics, Nuclear and High Energy Physics, Spin polarization, Condensed matter physics, Spin structure
Published
2000

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