Multifragment decays of central collisions in ⁸⁴Kr+¹⁹⁷Au at E/A0ex0ex=0ex0ex35, 55, and 70 MeV are studied. The dependence of the extracted emission time on the velocity of the fragment pair is investigated. More energetic pairs manifest a stronger Coulomb interaction, indicating emission from a source of smaller spatial-temporal extent than less energetic pairs. This trend can be understood in the context of a statistical model that allows the source characteristics to evolve as the fragments are emitted.
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Cornell et al. (1995) studied this question.
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