2018 Impact factor 2.481
Hadrons and Nuclei


Eur. Phys. J. A 12, 327-334 (2001)

$\chem{^{16}O\mbox{-}^{8}Be}$ break-up states and cluster structure of $\chem{^{24}Mg}$

A. Tumino1, 2, M. Lattuada1, 3, S. Romano1, 3, C. Spitaleri1, 4, D. Vinciguerra1, 3, Z. Basrak5, O.Yu. Goryunov6, V.V. Ostashko6, S. Szilner5, P. Figuera1, D. Lo Presti3, 7, C. Petta3, 7, N. Randazzo3, 7, S. Reito7, G.V. Russo3, 7 and S. Tudisco1, 3

1  Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Catania, Italy
2  Hahn-Meitner-Institut GmbH, Berlin, Germany
3  Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
4  Dipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria, Università di Catania, Catania, Italy
5  Institut Rudjer Boskovic, Zagreb, Croatia
6  Institute for Nuclear Research, Kiev, Ukraine
7  Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Catania, Italy

lattuada@lns.infn.it

(Received: 6 July 2001 / Revised version: 30 August 2001 Communicated by D. Guerreau)

Abstract
High-spin states of $\chem{^{24}Mg}$ produced in the $\chem{^{16}O +{} ^{12}C}$ interaction and decaying into the $\chem{^{16}O_{g.s.}+{}^{8}Be_{g.s.}}$ channel have been observed in the excitation region between 35 and 52 MeV. Spins have been assigned on the basis of the analysis of the measured angular correlations. Some of these states with positive parity correspond to the known resonances of the $\chem{^{12}C}$( $\chem{^{12}C}$, $\chem{^{8}Be_{g.s.}}$) $\chem{^{16}O}$ reaction belonging to the $\chem{^{16}O}$-2 $\alpha $ rotational band of $\chem{^{24}Mg}$. Moreover other resonances show up at higher excitation energy with an energy-spin relationship again suggesting a $\chem{^{16}O}$-2 $\alpha $ cluster structure for the associated configuration.

PACS
25.70.Ef - Resonances.
21.60.Gx - Cluster models.
24.10.-i - Nuclear-reaction models and methods.

© Società Italiana di Fisica, Springer-Verlag 2001