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arXiv · 0905.2901

Binary reaction decays from 24Mg+12C

C. Beck·P. Papka·A. Sanchez i Zafra·S. Thummerer·F. Azaiez·P. Bednarczyk·S. Courtin·D. Curien·O. Dorvaux·D. Lebhertz·A. Nourreddine·M. Rousseau·W. von Oertzen·B. Gebauer·C. Wheldon·Tz. Kokalova·G. de Angelis·A. Gadea·S. Lenzi·S. Szilner·D. R Napoli·W. N. Catford·D. G. Jenkins·G. Royer
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Abstract

Charged particle and gamma decays in 24Mg* are investigated for excitation energies where quasimolecular resonances appear in 12C+12C collisions. Various theoretical predictions for the occurence of superdeformed and hyperdeformed bands associated with resonance structures with low spin are discussed within the measured 24Mg* excitation energy region. The inverse kinematics reaction 24Mg+12C is studied at E_lab(24Mg) = 130 MeV, an energy which enables the population of 24Mg states decaying into 12C+12C resonant break-up states. Exclusive data were collected with the Binary Reaction Spectrometer in coincidence with EUROBALL IV installed at the VIVITRON Tandem facility at Strasbourg. Specific structures with large deformation were selectively populated in binary reactions and their associated gamma decays studied. Coincident events associated with inelastic and alpha-transfer channels have been selected by choosing the excitation energy or the entry point via the two-body Q-values. The analysis of the binary reaction channels is presented with a particular emphasis on 24Mg-gamma, 20Ne-gamma and 16O-gamma coincidences. New information (spin and branching ratios) is deduced on high-energy states in 24Mg and 16O, respectively.

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C. Beck, P. Papka, A. Sanchez i Zafra, S. Thummerer, F. Azaiez, P. Bednarczyk, S. Courtin, D. Curien, O. Dorvaux, D. Lebhertz, A. Nourreddine, M. Rousseau, W. von Oertzen, B. Gebauer, C. Wheldon, Tz. Kokalova, G. de Angelis, A. Gadea, S. Lenzi, S. Szilner, D. R Napoli, W. N. Catford, D. G. Jenkins, G. Royer. 2009-07-16. Binary reaction decays from 24Mg+12C. https://doi.org/10.1103/physrevc.80.034604

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