Fragment emission from modestly excited nuclear systems

Two-fragment reduced-velocity correlation functions were measured for small-impact-parameter collisions of 86Kr +93Nb at E/A=50 MeV and compared to results of many-body Coulomb-trajectory calculations performed for instantaneous and sequential multifragment breakup scenarios. The correlation functions indicate emission on a very short time scale and appear consistent with an instantaneous breakup scenario, even though they exhibit a pronounced dependence on fragment kinetic energy when fragments are emitted at large transverse momenta. For the case of instantaneous breakup, sensitivities to initial-state momentum correlations due to total momentum conservation and to different emission patterns are investigated. For fragments emitted with large transverse momenta, momentum conservation constraints can cause a dependence of reduced-velocity correlation functions on fragment energy and fragment charge similar to those observed experimentally

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Fragment emission from modestly excited nuclear systems

Cited by 2 publications

References 43 publications

Direct observation of the inversion of flow

Direct observation of the inversion of flow

Sensitivity of two-fragment correlation functions to initial-state momentum correlations

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