Assessing the Evolutionary Nature of Multifragment Decay

Authors

Document Type

Article

Publication Date

8-21-1995

Publication Source

Physical Review Letters

Volume Number

75

Issue Number

8

First Page

1475

Last Page

1478

Publisher

American Physical Society

Abstract

Multifragment decays of central collisions in 84Kr+197Au at E/A=35, 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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