4 results on '"O, Stezowski"'
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2. The highest spin discrete levels in131,132Ce
- Author
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A. O. Evans, N. Redon, H. C. Scraggs, J. Gizon, P. J. Nolan, C. M. Petrache, D. Sohler, József Tímár, O. Stezowski, D. Bazzacco, Corina Andreoiu, P. T. W. Choy, J. Simpson, A. Prévost, A. Walker, D. Curien, L. Zolnai, D. E. Appelbe, S. Lunardi, S. Gros, P. Bednarczyk, A. J. Boston, J.A. Sampson, N. Buforn, B. M. Nyakó, Alain Astier, Ingemar Ragnarsson, G. Rainovski, C. Fox, D. T. Joss, E. S. Paul, N. Kintz, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics ,Spectrometer ,010308 nuclear & particles physics ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,27.60.+j, 23.20.Lv, 21.10.Re ,Condensed Matter Physics ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Nuclear magnetic resonance ,0103 physical sciences ,High population ,010306 general physics ,Mathematical Physics ,Spin-½ - Abstract
The three superdeformed (SD) bands in 132Ce and the two SD bands in 131Ce have been extended to higher spin following experiments with the EUROBALL IV spectrometer. The two SD bands in 131Ce have been linked together. However, despite the relatively high population intensity of the bands (up to 5% of the respective channel), it has not been possible to unambiguously link any of the five SD bands into the low-spin, normally deformed structures of 131, 132Ce.
- Published
- 2006
3. Backbending in the ${}_{90}^{223}\mathrm{Th}$ nucleus: presentation of the consistency of two different experiments
- Author
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D. Guinet, G. Maquart, L. Chaix, L Augey, I. Companis, A. Astier, N. Redon, C. Ducoin, J Dudouet, C. Mancuso, A Vancraeyenest, O. Stezowski, and G Lehaut
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Physics ,Spins ,010308 nuclear & particles physics ,Yrast ,Moment of inertia ,Condensed Matter Physics ,01 natural sciences ,Omega ,Atomic and Molecular Physics, and Optics ,medicine.anatomical_structure ,0103 physical sciences ,medicine ,Level structure ,Atomic physics ,010306 general physics ,Nucleus ,Mathematical Physics ,Isotopes of thorium ,Spin-½ - Abstract
The detailed level structure of ${}_{}^{223}\mathrm{Th}$ has been investigated in measurements of γ radiations following the fusion-evaporation channel of the ${}_{}^{208}\mathrm{Pb}{(}_{}^{18}{\rm{O}},3n{)}_{}^{223}\mathrm{Th}$ reaction at 85 MeV beam energy. The present data are extracted from two different experiments performed with the EUROBALL IV and JUROGAM II γ-ray detector array, respectively. The level structure has been extended up to spin $49/2$ and 33 new γ-rays have been added using triple-γ coincidence data. The spins and parities of the newly observed states have been confirmed by angular distribution ratios. In addition to the two known yrast bands based on a $K=5/2$ configuration, a non-yrast band has been established up to spin $35/2$. This observation has brought to light a sharp backbending occuring at the highest spins promoting the ${}^{223}\mathrm{Th}$ as the heavier thorium isotope having an accident observed in its moment of inertia at high spin. We interpret this new structure as based on the same configuration as the yrast band in ${}_{}^{221}\mathrm{Th}$ having dominant $K=1/2$ contribution. At the highest spin a backbending occurs around a rotational frequency of ${\hslash }\omega =0.23\,\mathrm{MeV}$, very close to the one predicted in the ${}_{}^{222}\mathrm{Th}$ where a sharp transition to a reflection-symmetric shape is expected.
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- 2017
4. Probing the maximally deformed light rare-earth region around the drip-line nucleus 130Sm
- Author
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M Petri, E S Paul, P J Nolan, A J Boston, R J Cooper, M R Dimmock, S Gros, B M McGuirk, H C Scraggs, G Turk, B Rossé, M Meyer, N Redon, Ch Schmitt, O Stézowski, D Guinet, Ph Lautesse, G De France, S Bhattachasyya, G Mukherjee, F Rejmund, M Rejmund, H Savajols, J N Scheurer, A Astier, I Deloncle, A Prévost, B M Nyakó, J Gál, J Molnár, J Timár, L Zolnai, K Juhász, V F E Pucknell, R Wadsworth, P Joshi, G La Rana, R Moro, M Trotta, E Vardaci, G Hackman, G Ball, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), EXOGAM, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), M., Petri, E. S., Paul, P. J., Nolan, A. J., Boston, R. J., Cooper, M. R., Dimmock, S., Gro, B. M., Mcguirk, H. C., Scragg, G., Turk, B., Rosse, M., Meyer, N., Redon, Schmitt, C. h., O., Stezowski, D., Guinet, Lautesse, P. h., G., De France, S., Bhattacharyya, G., Mukherjee, F., Rejmund, M., Rejmund, H., Savajol, J. N., Scheurer, A., Astier, I., Deloncle, A., Prevost, B. M., Nyako, J., Gal, J., Molnar, J., Timar, L., Zolnai, K., Juhasz, V. F. E., Pucknell, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, and G., Ball
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radioactive ion beam ,Proton ,Nuclear Theory ,27.60.+j, 21.10.Re, 23.20.Lv ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Cerium Isotopes ,Nuclear physics ,ground-state deformation ,0103 physical sciences ,medicine ,Neutron ,Nuclear Experiment ,010306 general physics ,Spin (physics) ,Mathematical Physics ,Line (formation) ,Physics ,Spectrometer ,010308 nuclear & particles physics ,neutron deficient rare-earth nuclei ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,medicine.anatomical_structure ,Physics::Accelerator Physics ,Atomic physics ,charged particle spectrometer ,Nucleus ,Beam (structure) - Abstract
The neutron deficient rare-earth nuclei of the A similar to 130 region are of particular interest since highly deformed prolate ground states are expected. Indeed these nuclei are predicted to show maximal ground-state deformations of beta(2) similar to 0.40 (axis ratio of 3:2), comparable to the deformation deduced for superdeformed cerium isotopes at high spin. A fusion-evaporation experiment was performed with radioactive ion beams at GANIL in October 2004 which had the goal to reach very proton-rich exotic nuclei located near the proton drip-line. A radioactive Kr-76 beam, delivered by the SPIRAL facility, was used to bombard a thin Ni-58 target. Emitted gamma-rays were detected by the EXOGAM gamma-ray spectrometer which was, for the first time, coupled with both the DIAMANT charged-particle array and the VAMOS spectrometer.
- Published
- 2006
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