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Molecular resonance phenomena and alpha-clustering: recent progress and perspectives | | C. Beck
; | | Date: |
6 Dec 2003 | | Journal: | Nucl.Phys. A738 (2004) 24-30 | | Subject: | nucl-ex | | Affiliation: | Institut de Recherches Subatomiques, and Universite Louis Pasteur, Strasbourg, France | | Abstract: | 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. | | Source: | arXiv, nucl-ex/0401004 | | Services: | Forum | Review | PDF | Favorites | |
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