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Stefanescu I, Georgiev G, Ames F, et al. Coulomb excitation of 68,70Cu: first use of postaccelerated isomeric beams. Phys Rev Lett. 2007;98(12):122701doi: 10.1103/PhysRevLett.98.122701.
Stefanescu, I., Georgiev, G., Ames, F., Aystö, J., Balabanski, D. L., Bollen, G., Butler, P. A., Cederkäll, J., Champault, N., Davinson, T., De Maesschalck, A., Delahaye, P., Eberth, J., Fedorov, D., Fedosseev, V. N., Fraile, L. M., Franchoo, S., Gladnishki, K., Habs, D., Heyde, K., Huyse, M., Ivanov, O., Iwanicki, J., Jolie, J., Jonson, B., Kröll, T., Krücken, R., Kester, O., Köster, U., Lagoyannis, A., Liljeby, L., Lo Bianco, G., Marsh, B. A., Niedermaier, O., Nilsson, T., Oinonen, M., Pascovici, G., Reiter, P., Saltarelli, A., Scheit, H., Schwalm, D., Sieber, T., Smirnova, N., Van De Walle, J., Van Duppen, P., Zemlyanoi, S., Warr, N., Weisshaar, D., & Wenander, F. (2007). Coulomb excitation of 68,70Cu: first use of postaccelerated isomeric beams. Physical review letters, 98(12), 122701. https://doi.org/10.1103/PhysRevLett.98.122701
Stefanescu, I, et al. "Coulomb excitation of 68,70Cu: first use of postaccelerated isomeric beams." Physical review letters vol. 98,12 (2007): 122701. doi: https://doi.org/10.1103/PhysRevLett.98.122701
Stefanescu I, Georgiev G, Ames F, Aystö J, Balabanski DL, Bollen G, Butler PA, Cederkäll J, Champault N, Davinson T, De Maesschalck A, Delahaye P, Eberth J, Fedorov D, Fedosseev VN, Fraile LM, Franchoo S, Gladnishki K, Habs D, Heyde K, Huyse M, Ivanov O, Iwanicki J, Jolie J, Jonson B, Kröll T, Krücken R, Kester O, Köster U, Lagoyannis A, Liljeby L, Lo Bianco G, Marsh BA, Niedermaier O, Nilsson T, Oinonen M, Pascovici G, Reiter P, Saltarelli A, Scheit H, Schwalm D, Sieber T, Smirnova N, Van De Walle J, Van Duppen P, Zemlyanoi S, Warr N, Weisshaar D, Wenander F. Coulomb excitation of 68,70Cu: first use of postaccelerated isomeric beams. Phys Rev Lett. 2007 Mar 23;98(12):122701. doi: 10.1103/PhysRevLett.98.122701. Epub 2007 Mar 23. PMID: 17501116.
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Phys Rev Lett. 2007 Mar 23;98(12):122701. doi: 10.1103/PhysRevLett.98.122701. Epub 2007 Mar 23.

Coulomb excitation of 68,70Cu: first use of postaccelerated isomeric beams.

Physical review letters

I Stefanescu, G Georgiev, F Ames, J Aystö, D L Balabanski, G Bollen, P A Butler, J Cederkäll, N Champault, T Davinson, A De Maesschalck, P Delahaye, J Eberth, D Fedorov, V N Fedosseev, L M Fraile, S Franchoo, K Gladnishki, D Habs, K Heyde, M Huyse, O Ivanov, J Iwanicki, J Jolie, B Jonson, Th Kröll, R Krücken, O Kester, U Köster, A Lagoyannis, L Liljeby, G Lo Bianco, B A Marsh, O Niedermaier, T Nilsson, M Oinonen, G Pascovici, P Reiter, A Saltarelli, H Scheit, D Schwalm, T Sieber, N Smirnova, J Van De Walle, P Van Duppen, S Zemlyanoi, N Warr, D Weisshaar, F Wenander

Affiliations

  1. Instituut voor Kern- en Stralingsfysica, K. U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium.

PMID: 17501116 DOI: 10.1103/PhysRevLett.98.122701

Abstract

We report on the first low-energy Coulomb excitation measurements with radioactive Ipi=6- beams of odd-odd nuclei 68,70Cu. The beams were produced at ISOLDE, CERN and were post-accelerated by REX-ISOLDE to 2.83 MeV/nucleon. Gamma rays were detected with the MINIBALL spectrometer. The 6- beam was used to study the multiplet of states (3-, 4-, 5-, 6-) arising from the pi2p3/2 nu 1g9/2 configuration. The 4- state of the multiplet was populated via Coulomb excitation and the B(E2;6--->4-) value was determined in both nuclei. The results obtained illustrate the fragile stability of the Z=28 shell and N=40 subshell closures. A comparison with large-scale shell-model calculations using the 56Ni core shows the importance of the proton excitations across the Z=28 shell gap to the understanding of the nuclear structure in the neutron-rich nuclei with N approximately 40.

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