Coulomb excitation of 68Ni at 600 AMeV

Acta. Phys. Pol. B

38
1229
(2007)
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. Grbosz, M. Kmiecik, W. Mczyski, J. Stycze, 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. Bürger

The γ decay following the Coulomb excitation of 68Ni at 600 AMeV has
been measured using the RISING array at GSI. The 68Ni beam has been
produced from the fragmentation of 86Kr at 900 AMeV 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
10.8 MeV has been observed in all type of RISING γ 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.

DOI
https://www.actaphys.uj.edu.pl/R/38/4/1229/pdf
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