Vanishing spin alignment : experimental indication of triaxial ${}^{28}\mathbf{Si}+{}^{28}\mathbf{Si}$ nuclear molecule

Abstract

Fragment-fragment-$\gamma$ coincidences have been measured for ${}^{28}\mathrm{Si}+{}^{28}\mathrm{Si}$ at an energy corresponding to the population of a conjectured resonance in ${}^{56}$Ni. Fragment angular distributions as well as $\gamma$-ray angular correlations indicate that the spin orientations of the outgoing fragments are perpendicular to the orbital angular momentum. This differs from the ${}^{24}\mathrm{Mg}+{}^{24}\mathrm{Mg}$ and the ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ resonances, and suggests two oblate ${}^{28}\mathrm{Si}$ nuclei interacting in an equator-to-equator molecular configuration.

arXiv comment14 pages standard REVTeX file, 3 ps Figures -- Accepted for publication in Physical Review C (Rapid Communication)

References in corpus (1)

• Binary Decay of Light Nuclear Systems

Cited by in corpus (13)

• Cluster-decay of hot ${}^{56}$Ni${}^{\ast }$ formed in ${}^{32}$S+${}^{24}$Mg reaction
• Dynamical cluster-decay model for hot and rotating light-mass nuclear systems, applied to low-energy ${}^{32}$S + ${}^{24}$Mg ${\to }^{56}$Ni reaction
• Deformation effects in ${}^{56}$Ni nuclei produced in ${}^{28}$Si+${}^{28}$Si at 112 MeV
• Highly deformed ${}^{40}$Ca configurations in ${}^{28}$Si + ${}^{12}$C
• The population of deformed bands in ${}^{48}$Cr by emission of ${}^8$Be from the ${}^{32}$S + ${}^{24}$Mg reaction
• Nonaxial octupole deformations in light N=Z nuclei at high spins
• Nuclear alpha-clustering, superdeformation, and molecular resonances
• Clusters in Light Nuclei
• Present status of nuclear cluster physics and experimental perspectives
• Recent Experimental Results on Nuclear Cluster Physics
• Clustering effects induced by light nuclei
• Non-statistical fluctuations for deep inelastic processes in 27Al + 27Al
• Molecular structures and clustering effects in reactions induced by light nuclei