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Inicio » Actividades I+D > Publicaciones 2006 > High-spin octupole yrast levels in 216Rn...
"High-spin octupole yrast levels in 216Rn86"
M.E. Debray, J. Davidson, M. Davidson, A.J. Kreiner, M.A. Cardona, D. Hojman, D.R. Napoli, S. Lenzi, G. de Angelis, D. Bazzacco, S. Lunardi, M. De Poli, C. Rossi-Alvarez, A. Gadea, N. Medina and C.A. Ur
Phys. Rev. C 73(2) (2006) 024314/1-7
Abstract
The yrast level structure of 216Rn has been studied using in-beam spectroscopy α-γ-γ coincidence techniques through the 208Pb(18O, 2α2n) reaction in the 91–93 MeV energy range, using the 8π GASP-ISIS spectrometer at Legnaro. The level scheme of 216Rn resulting from this study shows alternating parity bands only above a certain excitation energy. From this result, the lightest nucleus showing evidence of octupole collectivity at low spins is still 216Fr, thereby defining the lowest-mass corner for this kind of phenomenon as N ≥ 129 and Z ≥ 87.
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