The experimental study of the unresolved rotational bands, forming ridge structures in γ -γ spectra, has been performed on the superdeformed nucleus 151Tb. γ transitions from the reaction 27Al, at 155 MeV, on 130Te were measured with EUROBALL IV in high fold coincidence. The analysis of the intensities and count fluctuations of the ridge structures shows the existence of ≈30 discrete rotational bands of superdeformed nature, half of which is in direct coincidence with the superdeformed yrast band. A comparison with band mixing model predictions and with a previous work on the superdeformed nucleus 143Eu is presented.
Selective studies of the excited rotational bands in the superdeformed nucleus 151Tb / G. Benzoni, J. Robin, A. Bracco, F.C.L. Crespi, A. De Conto, S. Leoni, B. Million, D. Montanari, G. Duchene, D. Curien, T. Byrski, F.A. Beck, P. Bednarczyk, S. Courtin, O. Dorvaux, B.J.P. Gall, P. Joshi, A. Nourreddine, I. Piqueras, J.P. Vivien, P.J. Twin. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 75:4(2007), pp. 047301.047301.1-047301.047301.4.
Selective studies of the excited rotational bands in the superdeformed nucleus 151Tb
G. BenzoniPrimo
;A. Bracco;F.C.L. Crespi;S. Leoni;D. Montanari;
2007
Abstract
The experimental study of the unresolved rotational bands, forming ridge structures in γ -γ spectra, has been performed on the superdeformed nucleus 151Tb. γ transitions from the reaction 27Al, at 155 MeV, on 130Te were measured with EUROBALL IV in high fold coincidence. The analysis of the intensities and count fluctuations of the ridge structures shows the existence of ≈30 discrete rotational bands of superdeformed nature, half of which is in direct coincidence with the superdeformed yrast band. A comparison with band mixing model predictions and with a previous work on the superdeformed nucleus 143Eu is presented.Pubblicazioni consigliate
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