arXiv subjects

Jan Toke

Publications and source records attributed to Jan Toke.

4 recordsLinked to original sources

arXiv2000

Dynamics of Heavy-Ion Collisions at Fermi Energies: Challenges and Opportunities

The dynamics of heavy-ion reactions at Fermi energies is dominated by a dissipative mechanism modified by the concurrent emission of non-statistical nucleons, light particles, and nuclear clusters. Experimental observables are available to monitor the relaxation processes driving the evolution of an interacting nuclear system towards equilibrium. Isospin degrees of freedom provide interesting new access to fundamental information on the reaction mechanism and the effective in-medium nucleonic interactions.

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arXiv2000

Liquid-Drop Model and Quantum Resistance Against Noncompact Nuclear Geometries

The importance of quantum effects for exotic nuclear shapes is demonstrated. Based on the example of a sheet of nuclear matter of infinite lateral dimensions but finite thickness, it is shown that the quantization of states in momentum space, resulting from the confinement of the nucleonic motion in the conjugate geometrical space, generates a strong resistance against such a confinement and generates restoring forces driving the system towards compact geometries. In the liquid-drop model, these quantum effects are implicitly included in the surface energy term, via a choice of interaction parameters, an approximation that has been found valid for compact shapes, but has not yet been scrutinized for exotic shapes.

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arXiv1998

Rochester Reply to Phair et al. "Evidence for dynamical fragment production?"

It is shown that the Comment by Phair et al. on PRL 77, 3514 (1996) does not challenge the paper by Tõke et al. It is, in fact, consistent with all conclusions of the targeted paper. The Comment disputes claims never made.

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arXiv1998

Comment on "Statistical nature of multifragmentation" (A.S.Botvina and D.H.E.Gross, Phys.Rev. C56, R23 (1998)

It is shown that conclusions regarding the statistical nature of multifragmentation, drawn by Botvina and Gross from experimental data, are unfounded. Imperfections of the experimental apparatus cannot restore information, once destroyed by statistical fluctuations. Attention is also called to the special treatment of neutron phase space in the Berlin MMMC, affecting the predicted relation between excitation energy and transversal kinetic energy of associated particles.

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