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Dissipative quantum dynamics in low-energy collisions of complex nuclei

Diaz-Torres, A, Hinde, DJ, Dasgupta, M, Milburn, GJ and Tostevin, JA (2008) Dissipative quantum dynamics in low-energy collisions of complex nuclei PHYSICAL REVIEW C, 78 (6). ? - ?. ISSN 0556-2813

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Abstract

Model calculations that include the effects of irreversible, environmental couplings on top of a coupled-channels dynamical description of the collision of two complex nuclei are presented. The Liouville-von Neumann equation for the time evolution of the density matrix of a dissipative system is solved numerically providing a consistent transition from coherent to decoherent (and dissipative) dynamics during the collision. Quantum decoherence and dissipation are clearly manifested in the model calculations. Energy dissipation, due to the irreversible decay of giant-dipole vibrational states of the colliding nuclei, is shown to result in a hindrance of quantum tunneling and fusion.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Nuclear, Physics, HEAVY-ION COLLISIONS, DEEP INELASTIC-COLLISIONS, GIANT-RESONANCES, FUSION REACTIONS, SYSTEMS, STATES, PROPAGATION, SCATTERING, CHANNELS, FISSION
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Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:07
Last Modified: 23 Sep 2013 18:26
URI: http://epubs.surrey.ac.uk/id/eprint/214

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