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Sequential fissions of heavy nuclear systems

Abstract : In Xe+Sn central collisions from 12 to 20 MeV/A measured with the INDRA 4$\pi$ multidetector, the three-fragment exit channel occurs with a significant cross section. In this contribution, we show that these fragments arise from two successive binary splittings of a heavy composite system. Strong Coulomb proximity effects are observed in the three-fragment final state. By comparison with Coulomb trajectory calculations, we show that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming compatible with quasi-simultaneous multifragmentation above 18 MeV/A.
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Submitted on : Friday, August 23, 2013 - 4:57:10 PM
Last modification on : Monday, January 4, 2021 - 10:44:28 AM
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Diego Gruyer, J.D. Frankland, E. Bonnet, M. Boisjoli, A. Chbihi, et al.. Sequential fissions of heavy nuclear systems. Fifth International Workshop on Nuclear fission and Fission-Product Spectroscopy, May 2013, Caen, France. pp.07006, ⟨10.1051/epjconf/20136207006⟩. ⟨in2p3-00853643⟩

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