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Coplanar ternary decay of hyper-deformed $^{56}$Ni

Abstract : Ternary fission events from the decay of $^{56}$Ni compound nuclei, formed in the $^{32}$S + $^{24}$Mg reaction at $E_{lab}(^{32}S)$ = 163.5 MeV, have been measured in a unique set-up consisting of two large area position sensitive (x,y) gas detector telescopes. Very narrow out-of-plane correlations are observed for two fragments emitted in either purely binary events or in events with a missing mass consisting of 2 and 3 $\alpha$-particles. These correlations are interpreted as ternary fission decay from compound nuclei at high angular momenta through an elongated (hyper-deformed) shape with very large moments of inertia, where the lighter mass in the neck region remains at rest.
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Preprints, Working Papers, ...
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http://hal.in2p3.fr/in2p3-00024022
Contributor : Yvette Heyd <>
Submitted on : Tuesday, April 12, 2005 - 1:44:37 PM
Last modification on : Thursday, April 23, 2020 - 2:26:21 PM
Long-term archiving on: : Thursday, April 1, 2010 - 9:17:20 PM

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  • HAL Id : in2p3-00024022, version 1

Citation

W. von Oertzen, B. Gebauer, G. Efimov, S. Thummerer, T. Kokalova, et al.. Coplanar ternary decay of hyper-deformed $^{56}$Ni. 2005. ⟨in2p3-00024022⟩

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