Monopole oscillations in light nuclei with a molecular dynamics approach

Abstract

Collective monopole vibrations are studied in the framework of an antisymmetrized version of molecular dynamics as a function of the vibration amplitude. The giant monopole resonance energy in ${}^{40}Ca$ is sensitive to the incompressibility of the effective interaction, in good agreement with complete time-dependent Hartree-Fock calculations. The collective response of ${}^{12}C$, ${}^{16}O$ and ${}^{24}Mg$ is also studied. For these lighter nuclei that have an important contribution of an $\alpha$-clustered component, different frequencies are observed, corresponding to two different types of vibrations associated with breathing and moving of the underlying clusters. Possible connections with direct breakup into $\alpha$ clusters at high excitation energy are discussed.

10 pages, 8 figures

References in corpus (6)

• Nuclear multifragmentation and phase transition for hot nuclei
• Pairing Vibrations Study with the Time-Dependent Hartree-Fock-Bogoliubov theory
• Negative parity states of ${}^{11}$B and ${}^{11}$C and the similarity with $^{12}C
• Light-Ion-Induced Multifragmentation: The ISiS Project
• Multi-particle correlation function to study short-lived nuclei
• Real-time Skyrme TDHF dynamics of giant resonances

Cited by in corpus (16)

• Microscopic Clustering in Light Nuclei
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions
• Giant Dipole Resonance as a Fingerprint of $\alpha$ Clustering Configurations in ${}^{12}$C and ${}^{16}$O
• Alpha-Particle Clustering from Expanding Self-Conjugate Nuclei within the Hartree-Fock-Bogoliubov Approach
• Isoscalar monopole excitations in ${}^{16}$O: $\alpha$-cluster states at low energy and mean-field-type states at higher energy
• Dipole oscillation modes in light $\alpha$-clustering nuclei
• $\alpha$-clustering effect on flows of direct photons in heavy-ion collisions
• Cluster states and monopole transitions in ${}^{16}$O
• Isoscalar monopole and dipole excitations of cluster states and giant resonances in ${}^{12}$C
• Correlations between the nuclear breathing mode energy and properties of asymmetric nuclear matter
• Isovector and isoscalar dipole excitations in ${}^9$Be and ${}^{10}$Be studied with antisymmetrized molecular dynamics
• Structure and direct decay of Giant Monopole Resonances
• Investigating the predicted breathing-mode excitation of the Hoyle state
• Isoscalar giant monopole resonance in Sn isotopes using a quantum molecular dynamics model
• Reexamination of ${}^6$Li scattering as a Probe to Investigate the Isoscalar Giant Resonances in Nuclei
• Multi-probe study of excited states in ${}^{12}\mathrm{C}$: disentangling the sources of monopole strength between the Hoyle state and $E_x=13$ MeV