Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-03-17
Ukr. j. Phys. v.52, #2, 130 (2007)
Physics
Condensed Matter
Statistical Mechanics
20 pages
Scientific paper
A mechanism is proposed for initial stage of instability development that can induce the fragmentation of nuclear matter, arising as a result of collisions of non-relativistic heavy nuclei. Collision of heavy nuclei is simulated as a collision of two unbounded Fermi-liquid ``drops''. The instability origination in such a system is related to propagation of increasing oscillations in the nuclear matter. These oscillations can exist in a resting Fermi-liquid: modified Landau zero sound, modified spin and isospin waves, combination of these more simple waves. These instabilities are analogous to the beam instability in ordinary electron plasma. Behavior features of the obtained oscillation increase increments are provided. They can be used as indication for experimental confirmation of the proposed mechanism of fragmentation at nuclear collisions. Directions along which nuclear matter ``jets'' can be expected are specified.
Ivashin A. P.
Peletminskii Sergey V.
Slyusarenko Yu. V.
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