Cold fission as cluster decay with dissipation

  • For cold (neutronless) fission we consider an analytical model of quantum tunneling with dissipation through a barrier U(q) evaluated with a M3Y nucleon-nucleon force. We calculate the tunneling spectrum, i.e., the fission rate as a function of the total kinetic energy of the fragments. The theoretical results are compared with the experimental data obtained for the fine structure of two cold fission modes of 252Cf: 148Ba+104Mo and 146Ba+106Mo. Taking into account the dissipative coupling of the potential function U(q) and of the momentum p with all the other neglected coordinates, we obtain a remarkable agreement with the experimental data. We conclude that the cold fission process is a spontaneous decay with a spectrum determined by the shape of the barrier and an amplitude depending on the strength of the dissipative coupling.

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Author:Eliade Ştefanescu, Werner ScheidGND, Aurel Săndulescu, Walter GreinerGND
Parent Title (German):Physical Review. C
Document Type:Article
Date of Publication (online):2006/07/14
Year of first Publication:1996
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/14
Page Number:8
First Page:3014
Last Page:3021
Source:Physical Review C 53(6), S. 3014-3021 (1996), ©1996 The American Physical Society,
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:00.00.00 GENERAL / 03.00.00 Quantum mechanics, field theories, and special relativity (see also section 11 General theory of fields and particles) / 03.65.-w Quantum mechanics [see also 03.67.-a Quantum information; 05.30.-d Quantum statistical mechanics; 31.30.J- Relativistic and quantum electrodynamics (QED) effects in atoms, molecules, and ions in atomic physics] / 03.65.Sq Semiclassical theories and applications
20.00.00 NUCLEAR PHYSICS / 24.00.00 Nuclear reactions: general / 24.75.+i General properties of fission
Licence (German):License LogoDeutsches Urheberrecht