Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-01-06
Nucl.Phys. A738 (2004) 24-30
Physics
Nuclear Physics
Nuclear Experiment
7 pages, 3 figures included. Invited Talk 8th Int. Conf. on Clustering Aspects of Nuclear Structure and Dynamics, Nara, Japan,
Scientific paper
10.1016/j.nuclphysa.2004.04.007
The connection between molecular resonance phenomena in light heavy-ion collisions, alpha-clustering and extremely deformed states in light $\alpha$-like nuclei is discussed. For example, the superdeformed bands recently discovered in light N=Z nuclei such as $^{36}$Ar, $^{40}$Ca, $^{48}$Cr, and $^{56}$Ni by $\gamma$-ray spectroscopy may have a special link with resonant states in collisions with $\alpha$-like nuclei. The resonant reactions involving identical bosons such as $^{12}$C+$^{12}$C, $^{16}$O+$^{16}$O $^{24}$Mg+$^{24}$Mg and $^{28}$Si+$^{28}$Si are of interest. For instance, a butterfly mode of vibration of the J$^{\pi}$ = 38$^{+}$ resonance of $^{28}$Si+$^{28}$Si has been discovered in recent particle $\gamma$-ray angular correlations measurements. The search for signatures of strongly deformed shapes and clustering in light N=Z nuclei is also the domain of charged particle spectroscopy. The investigation of $\gamma$-decays in $^{24}$Mg has been undertaken for excitation energies where previously nuclear molecular resonances were found in $^{12}$C+$^{12}$C collisions. In this case the $^{12}$C-$^{12}$C scattering states can be related to the breakup resonance and, tentatively, to the resonant radiative capture $^{12}$C+$^{12}$C reaction.
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