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The breakup of24Mg into16O and8Be

Authors :: Pople, J. S.
Clarke, N. M.
Fulton, B. R.
Leddy, M. J.
Murgatroyd, J. T.
Chan, Y.
Stokstad, R. G.
Rae, W. D. M.
Catford, W. N.
Fox, S. P.
Gyapong, G. J.
Watson, D. L.
Bennett, S. J.
Source :: Zeitschrift für Physik A Hadrons and Nuclei; September 1994, Vol. 349 Issue: 3-4 p349-350, 2p
Publication Year :: 1994
Abstract: The breakup of<superscript>24</superscript>Mg into<superscript>16</superscript>O and<superscript>8</superscript>Be fragments has been studied using the reactions<superscript>12</superscript>C(<superscript>24</superscript>Mg,<superscript>16</superscript>O<superscript>8</superscript>Be)<superscript>12</superscript>C and<superscript>12</superscript>C(<superscript>20</superscript>Ne,<superscript>16</superscript>O<superscript>8</superscript>Be)<superscript>8</superscript>Be. In the latter case, discrete states are observed near 24–28 MeV of excitation in<superscript>24</superscript>Mg and the yield from this reaction is an order of magnitude greater than that of the former. This implies the excited configuration populated in<superscript>24</superscript>Mg is favoured by the transfer of an alpha-particle and would therefore suggest an association with a 4-particle 4-hole configuration. This suggests a link with the octupole stabilised deformed minimum which appears in Nilsson-Strutinsky calculations of the potential energy surface in<superscript>24</superscript>Mg, and also with thea —<superscript>16</superscript>O —a structure predicted in cranked cluster model calculations. In the excitation spectrum no states appear above 31 MeV indicating a possible band termination in disagreement with recent results using the<superscript>16</superscript>O+<superscript>12</superscript>C reaction. These results are discussed in terms of the Harvey model.