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Low-energy Coulomb excitation of neutron-rich zinc isotopes

Van de Walle, J.; Aksouh, F.; Behrens, T.; Bildstein, V.; Blazhev, A.; Cederkäll, Joakim LU ; Clement, E.; Cocolios, T. E.; Davinson, T. and Delahaye, P., et al. (2009) In Physical Review C (Nuclear Physics) 79(1).
Abstract
At the radioactive ion beam facility REX-ISOLDE, neutron-rich zinc isotopes were investigated using low-energy Coulomb excitation. These experiments have resulted in B(E2, 2(1)(+)-> 0(1)(+)) values in Zn74-80, B(E2, 4(1)(+)-> 2(1)(+)) values in Zn-74,Zn-76 and the determination of the energy of the first excited 2(1)(+) states in Zn-78,Zn-80. The zinc isotopes were produced by high-energy proton- (A = 74, 76, 80) and neutron-(A = 78) induced fission of U-238, combined with selective laser ionization and mass separation. The isobaric beam was postaccelerated by the REX linear accelerator and Coulomb excitation was induced on a thin secondary target, which was surrounded by the MINIBALL germanium detector array. In this work, it is... (More)
At the radioactive ion beam facility REX-ISOLDE, neutron-rich zinc isotopes were investigated using low-energy Coulomb excitation. These experiments have resulted in B(E2, 2(1)(+)-> 0(1)(+)) values in Zn74-80, B(E2, 4(1)(+)-> 2(1)(+)) values in Zn-74,Zn-76 and the determination of the energy of the first excited 2(1)(+) states in Zn-78,Zn-80. The zinc isotopes were produced by high-energy proton- (A = 74, 76, 80) and neutron-(A = 78) induced fission of U-238, combined with selective laser ionization and mass separation. The isobaric beam was postaccelerated by the REX linear accelerator and Coulomb excitation was induced on a thin secondary target, which was surrounded by the MINIBALL germanium detector array. In this work, it is shown how the selective laser ionization can be used to deal with the considerable isobaric beam contamination and how a reliable normalization of the experiment can be achieved. The results for zinc isotopes and the N = 50 isotones are compared to collective model predictions and state-of-the-art large-scale shell-model calculations, including a recent empirical residual interaction constructed to describe the present experimental data up to 2004 in this region of the nuclear chart. (Less)
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Physical Review C (Nuclear Physics)
volume
79
issue
1
publisher
American Physical Society
external identifiers
  • wos:000262979900020
  • scopus:59449085227
ISSN
0556-2813
DOI
10.1103/PhysRevC.79.014309
language
English
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2009-03-17 11:27:10
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@article{5f0584d1-04c6-45c9-88d5-a8557e97045d,
  abstract     = {At the radioactive ion beam facility REX-ISOLDE, neutron-rich zinc isotopes were investigated using low-energy Coulomb excitation. These experiments have resulted in B(E2, 2(1)(+)-> 0(1)(+)) values in Zn74-80, B(E2, 4(1)(+)-> 2(1)(+)) values in Zn-74,Zn-76 and the determination of the energy of the first excited 2(1)(+) states in Zn-78,Zn-80. The zinc isotopes were produced by high-energy proton- (A = 74, 76, 80) and neutron-(A = 78) induced fission of U-238, combined with selective laser ionization and mass separation. The isobaric beam was postaccelerated by the REX linear accelerator and Coulomb excitation was induced on a thin secondary target, which was surrounded by the MINIBALL germanium detector array. In this work, it is shown how the selective laser ionization can be used to deal with the considerable isobaric beam contamination and how a reliable normalization of the experiment can be achieved. The results for zinc isotopes and the N = 50 isotones are compared to collective model predictions and state-of-the-art large-scale shell-model calculations, including a recent empirical residual interaction constructed to describe the present experimental data up to 2004 in this region of the nuclear chart.},
  articleno    = {014309},
  author       = {Van de Walle, J. and Aksouh, F. and Behrens, T. and Bildstein, V. and Blazhev, A. and Cederkäll, Joakim and Clement, E. and Cocolios, T. E. and Davinson, T. and Delahaye, P. and Eberth, J. and Ekström, Andreas and Fedorov, D. V. and Fedosseev, V. N. and Fraile, L. M. and Franchoo, S. and Gernhauser, R. and Georgiev, G. and Habs, D. and Heyde, K. and Huber, G. and Huyse, M. and Ibrahim, F. and Ivanov, O. and Iwanicki, J. and Jolie, J. and Kester, O. and Koester, U. and Kroell, T. and Kruecken, R. and Lauer, M. and Lisetskiy, A. F. and Lutter, R. and Marsh, B. A. and Mayet, P. and Niedermaier, O. and Pantea, M. and Raabe, R. and Reiter, P. and Sawicka, M. and Scheit, H. and Schrieder, G. and Schwalm, D. and Seliverstov, M. D. and Sieber, T. and Sletten, G. and Smirnova, N. and Stanoiu, M. and Stefanescu, I. and Thomas, J. -C. and Valiente-Dobon, J. J. and Van Duppen, P. and Verney, D. and Voulot, D. and Warr, N. and Weisshaar, D. and Wenander, F. and Wolf, B. H. and Zielinska, M.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Low-energy Coulomb excitation of neutron-rich zinc isotopes},
  url          = {http://dx.doi.org/10.1103/PhysRevC.79.014309},
  volume       = {79},
  year         = {2009},
}