The gamma decay following the Coulomb excitation of 68Ni at 600AMeV has been measured using the RISING array at GSI. The 68Ni beam has been produced from the fragmentation of 86Kr at 900AMeV from the UNILACSIS on a 9Be target and selected using the Fragment Separator. After the selection of Coulomb excited 68Ni isotopes a peak centered at approximately 10.8MeV has been observed in all type of RISING gamma detectors. Because of the reaction mechanism the measured peak is interpreted to have a dipole nature and to come from the Pygmy Dipole Resonance. The measured data are consistent with the predictions of the Relativistic Mean Field and the Random Phase Approximation approaches.
Coulomb excitation of 68Ni at 600 AMeV / A. Bracco, G. Benzoni, N. Blasi, S. Brambilla, F. Camera, F.C.L. Crespi, S. Leoni, B. Million, D. Montanari, M. Pignanelli, O. Wieland, A. Maj, P. Bednarczyk, J. Grebosz, M. Kmiecik, W. Meczynski, J. Styczen, T. Aumann, A. Banu, T. Beck, F. Becker, L. Caceres, P. Doornenbal, H. Emling, J. Gerl, H. Geissel, M. Gorska, O. Kavatsyuk, M. Kavatsyuk, I. Kojouharov, N. Kurz, R. Lozeva, N. Saito, T. Saito, H. Shaffner, H.J. Wollersheim, J. Jolie, P. Reiter, N. Warr, G. De Angelis, A. Gadea, D. Napoli, S. Lenzi, S. Lunardi, D. Balabanski, G. Lo Bianco, C. Petrache, A. Saltarelli, M. Castoldi, A. Zucchiatti, J. Walker, A. Buerger. - In: ACTA PHYSICA POLONICA B. - ISSN 0587-4254. - 38:4(2007), pp. 1229-1236.
Coulomb excitation of 68Ni at 600 AMeV
A. Bracco;G. Benzoni;F. Camera;F.C.L. Crespi;S. Leoni;D. Montanari;M. Pignanelli;
2007
Abstract
The gamma decay following the Coulomb excitation of 68Ni at 600AMeV has been measured using the RISING array at GSI. The 68Ni beam has been produced from the fragmentation of 86Kr at 900AMeV from the UNILACSIS on a 9Be target and selected using the Fragment Separator. After the selection of Coulomb excited 68Ni isotopes a peak centered at approximately 10.8MeV has been observed in all type of RISING gamma detectors. Because of the reaction mechanism the measured peak is interpreted to have a dipole nature and to come from the Pygmy Dipole Resonance. The measured data are consistent with the predictions of the Relativistic Mean Field and the Random Phase Approximation approaches.
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