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Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale
- Title
- Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale
- Funding
- ARC | Discovery Projects
- Contract (GA) number
- DP0879679
- Start Date
- 2008/01/01
- End Date
- 2011/12/31
- Open Access mandate
- no
- Organizations
- -
- More information
- http://purl.org/au-research/grants/arc/DP0879679
-
Effects of Nuclear Structure on Quasi-fission
Lin C.J.; Evers M.; Dasgupta M.; Rietz R. du; Hinde D.J.; Avez B.; Simenel Cédric; Wakhle Aditya; Luong D.H. (2012)
Projects: ARC | Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale (DP0879679), ARC | From coherent to dissipative dynamics in complex quantum systems: opening a new window through nuclear fusion (DP110102879)Invited talk to NSRT12. To be published in Eur. Phys. J. Web of Conf.; The quasi-fission mechanism hinders fusion of heavy systems because of a mass flow between the reactants, leading to a re-separation of more symmetric fragments in the exit channel. A good understanding of the competition between fusion and quasi-fission mechanisms is expected to be of great help to optimize the formation and study of heavy and superheavy nuclei. Quantum microscopic models, such as the time-dependent Hartr...Complete Fusion Enhancement and Suppression of Weakly Bound Nuclei at Near Barrier Energies
Gomes,P. R. S.; Canto, L. F.; Lubian, J.; Linares, R.; Luong, D. H.; Dasgupta, M.; Hinde, D. J.; Hussein, M. S. (2012)
Projects: ARC | From coherent to dissipative dynamics in complex quantum systems: opening a new window through nuclear fusion (DP110102879), ARC | Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale (DP0879679)We consider the influence of breakup channels on the complete fusion of weakly bound systems in terms of dynamic polarization potentials. It is argued that the enhancement of the cross section at sub-barrier energies may be consistent with recent experimental observations that nucleon transfer, often leading to breakup, is dominant compared to direct breakup. The main trends of the experimental complete fusion cross section for $^{6,7}$Li + $^{209}$Bi are analyzed in the framework of the DPP ...From light to hyper-heavy molecules and neutron-star crusts in a dynamical mean-field approach
Simenel, Cédric (2012)
Projects: ARC | Microscopic many-body quantum dynamics: new approaches for fundamental science and applications (FT120100760), ARC | Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale (DP0879679), ARC | Reaching the superheavy elements: a quantitative understanding through integrating new reaction time measurements with theoretical models (DP110102858)The richness of phenomena occurring in heavy-ion collisions calls for microscopic approaches where the motion of each nucleon is treated quantum mechanically. The most popular microscopic approach for low-energy collisions between atomic nuclei is the time-dependent Hartree-Fock (TDHF) theory, providing a quantum mean-field dynamics of the system. The TDHF approach and some of its extensions are used to predict the evolution of out-of-equilibrium nuclear systems. The formation of di-nuclear s...Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions
Simenel, Cédric (2012)
Projects: ARC | From coherent to dissipative dynamics in complex quantum systems: opening a new window through nuclear fusion (DP110102879), ARC | Reaching the superheavy elements: a quantitative understanding through integrating new reaction time measurements with theoretical models (DP110102858), ARC | Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale (DP0879679)A summary of recent researches on nuclear dynamics with realistic microscopic quantum approaches is presented. The Balian-V\'en\'eroni variational principle is used to derive the time-dependent Hartree-Fock (TDHF) equation describing the dynamics at the mean-field level, as well as an extension including small-amplitude quantum fluctuations which is equivalent to the time-dependent random-phase approximation (TDRPA). Such formalisms as well as their practical implementation in the nuclear phy...Actinide collisions for QED and superheavy elements with the time-dependent Hartree-Fock theory and the Balian-V\'en\'eroni variational principle
Kedziora David J.; Golabek Cédric; Simenel Cédric (2011)
Projects: ARC | From coherent to dissipative dynamics in complex quantum systems: opening a new window through nuclear fusion (DP110102879), ARC | Reaching the superheavy elements: a quantitative understanding through integrating new reaction time measurements with theoretical models (DP110102858), ARC | Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale (DP0879679)Proceeding of the FUSION11 conference.; International audience; Collisions of actinide nuclei form, during very short times of few zs ($10^{-21}$~s), the heaviest ensembles of interacting nucleons available on Earth. Such collisions are used to produce super-strong electric fields by the huge number of interacting protons to test spontaneous positron-electron pair emission (vacuum decay) predicted by the quantum electrodynamics (QED) theory. Multi-nucleon transfer in actinide collisions could... -
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Scientific Results
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