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Low-energy Coulomb excitation of neutron-rich zinc isotopes

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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.
Keywords
SHELL-MODEL, RADIOACTIVE ION-BEAM, ISOTONES, ISOLDE, STABILITY, DETECTOR, NUCLEI, N=40, STATE

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Chicago
Van de Walle, J, F Aksouh, T Behrens, V Bildstein, A Blazhev, J Cederkall, E Clement, et al. 2009. “Low-energy Coulomb Excitation of Neutron-rich Zinc Isotopes.” Physical Review C 79 (1).
APA
Van de Walle, J, Aksouh, F., Behrens, T., Bildstein, V., Blazhev, A., Cederkall, J., Clement, E., et al. (2009). Low-energy Coulomb excitation of neutron-rich zinc isotopes. PHYSICAL REVIEW C, 79(1).
Vancouver
1.
Van de Walle J, Aksouh F, Behrens T, Bildstein V, Blazhev A, Cederkall J, et al. Low-energy Coulomb excitation of neutron-rich zinc isotopes. PHYSICAL REVIEW C. 2009;79(1).
MLA
Van de Walle, J, F Aksouh, T Behrens, et al. “Low-energy Coulomb Excitation of Neutron-rich Zinc Isotopes.” PHYSICAL REVIEW C 79.1 (2009): n. pag. Print.
@article{1018731,
  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)(+)-{\textrangle} 0(1)(+)) values in Zn74-80, B(E2, 4(1)(+)-{\textrangle} 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 Cederkall, J and Clement, E and Cocolios, TE and Davinson, T and Delahaye, P and Eberth, J and Ekstrom, A and Fedorov, DV and Fedosseev, VN and Fraile, LM and Franchoo, S and Gernhauser, R and Georgiev, G and Habs, D and Heyde, Kristiaan and Huber, G and Huyse, M and Ibrahim, F and Ivanov, O and Iwanicki, J and Jolie, J and Kester, O and Koster, U and Kroll, T and Krucken, R and Lauer, M and Lisetskiy, AF and Lutter, R and Marsh, BA 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, MD and Sieber, T and Sletten, G and Smirnova, N and Stanoiu, M and Stefanescu, I and Thomas, JC and Valiente-Dobon, JJ and Van Duppen, P and Verney, D and Voulot, D and Warr, N and Weisshaar, D and Wenander, F and Wolf, BH and Zielinska, M},
  issn         = {0556-2813},
  journal      = {PHYSICAL REVIEW C},
  language     = {eng},
  number       = {1},
  pages        = {13},
  title        = {Low-energy Coulomb excitation of neutron-rich zinc isotopes},
  url          = {http://dx.doi.org/10.1103/PhysRevC.79.014309},
  volume       = {79},
  year         = {2009},
}

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