Spin Quantization in Heavy Ion Collision

Abstract

We analyzed recent experimental data on the disassembly of ${}^{28}$Si into 7$\alpha$ in terms of a hybrid $\alpha$-cluster model. We calculated the probability of breaking into several $\alpha$-like fragments for high $l$-spin values for identical and non-identical spin zero nuclei. Resonant energies were found for each $l$-value and compared to the data and other theoretical models. Toroidal-like structures were revealed in coordinate and momentum space when averaging over many events at high $l$. The transition from quantum to classical mechanics is highlighted.

arXiv comment16 pages, 15 figures

References in corpus (20)

• Constraint Molecular Dynamics approach to Fermionic systems
• A systematic description of evaporation spectra for light and heavy compound nuclei
• Structure of Light Unstable Nuclei Studied with Antisymmetrized Molecular Dynamics
• Alpha-particle condensation in 16O via a full four-body OCM calculation
• Antisymmetrized molecular dynamics with quantum branching processes for collisions of heavy nuclei
• Reaction Dynamics and Multifragmentation in Fermi Energy Heavy Ion Reactions
• Universal Behavior of Lyapunov Exponents in Unstable Systems
• Structures in high-energy fusion data
• A region of high-spin toroidal isomers
• Evidence for high excitation energy resonances in the 7 alpha disassembly of ${}^{28}$Si
• High-spin torus isomers and their precession motions
• Existence of exotic torus configuration in high-spin excited states of ${}^{40}$Ca
• Density and Temperature of Bosons from Quantum Fluctuations
• Calculation of the 12C+12C sub-barrier fusion cross section in an imaginary time-dependent mean field theory
• Pure Collective Precession Motion of High-Spin Torus Isomer
• Oscillations above the barrier in the fusion of 28Si + 28Si
• Toroidal high-spin isomers in light nuclei with N not equal to Z
• Constrained Molecular Dynamics Simulations of Atomic Ground-States
• Particle-hole nature of the light high-spin toroidal isomers
• Remarkable long-range-systematic in the binding energies of alpha-nuclei II