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Comparison of dynamical multifragmentation models

J. Rizzo·M. Colonna·A. Ono
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Abstract

Multifragmentation scenarios, as predicted by antisymmetrized molecular dynamics (AMD) or momentum-dependent stochastic mean-field (BGBD) calculations are compared. While in the BGBD case fragment emission is clearly linked to the spinodal decomposition mechanism, i.e. to mean-field instabilities, in AMD many-body correlations have a stronger impact on the fragmentation dynamics and clusters start to appear at earlier times. As a consequence, fragments are formed on shorter time scales in AMD, on about equal footing of light particle pre-equilibrium emission. Conversely, in BGBD pre-equilibrium and fragment emissions happen on different time scales and are related to different mechanisms.

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J. Rizzo, M. Colonna, A. Ono. 2006-09-19. Comparison of dynamical multifragmentation models. https://doi.org/10.1103/physrevc.76.024611

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