1. New sub-mus isomers in 125,127,129Sn and isomer systematics of 124-130Sn
- Author
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Lozeva, Radomira, Simpson, G.S., Grawe, H., Neyens, G., Atanasova, L.A., L. Balabanski, D., Bazzacco, D., Becker, F., Bednarczyk, P., Benzoni, G., Blasi, N., Blazhev, A., Bracco, A., Brandau, C., Caceres, L., Camera, F., K. Chamoli, S., C. L. Crespi, F., Daugas, J.-M., Detistov, P., De Rydt, M., Doornenbal, P., Fahlander, C., Farnea, E., Georgiev, G., Gerl, J., A. Gladnishki, K., Gorska, M., Grebosz, J., Hass, M., Hoischen, R., Ilie, G., Ionescu-Bujor, M., Iordachescu, A., Jolie, J., Jungclaus, A., Kmiecik, M., Kojouharov, I., Kurz, N., P. Lakshmi, S., Lo Bianco, G., Mallion, S., Maj, A., Montanari, D., Perru, O., Pfutzner, M., Piétri, S., Pinston, J.A., Podolyak, Zs., Prokopowicz, W., Rudolph, D., Rusev, G., R. Saitoh, T., Saltarelli, A., Schaffner, H., Schwengner, R., Tashenov, S., Turzo, K., Valiente-Dobon, J.J., Vermeulen, N., Walker, J., Werner-Malento, E., Wieland, O., Wollersheim, H.-J., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Département de Physique Théorique et Appliquée (DPTA), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and ILL
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[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,21.10.Tg, 21.60.Cs, 23.20.Lv, 27.60.+j - Abstract
Newsub-μs isomers have been observed in the neutron-rich Sn isotopes. 125,127,129Sn nuclei have been produced in a relativistic fission reaction of 238U on a 9Be target at 750 A·MeV and by the fragmentation of 136Xe at 600 A·MeV populating high-spin yrast states. In addition to the already known μs isomers, three new ones with sub-μs half-lives have been observed. These yrast isomers are the high-spin members of the ν(d−1 3/2h−2 11/2) and νh−n 11/2, seniority v = 3 multiplets leading to isomeric (23/2+) and (27/2−) states, respectively. Added to the already known 19/2+μs isomers in this region the current work completes the systematic information of neutron-hole excitations toward the filling of the last h11/2 orbital at N = 82. The results are discussed in the framework of state-of-the-art shell-model calculations using realistic interactions.
- Published
- 2008
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