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What can we learn from fission times?

Abstract : Fission times have been measured by the blocking technique in single crystal for uranium nuclei and for super-heavy elements with Z = 120. The fission times measured for uranium nuclei can be reproduced by statistical calculations following the Bohr and Wheeler approach only if a friction coefficient increasing with temperature is considered. In the super-heavy element domain, a discrimination between the fast quasi-fission process and the slow fusion-fission one has been achieved from reaction time measurements. A minimum cross-section $\sigma$= 22 mb for formation of Z = 120 compound nuclei in $^{238}$U+Ni reactions at 6.62 MeV/A has been inferred.
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http://hal.in2p3.fr/in2p3-00025269
Contributor : Michel Lion <>
Submitted on : Thursday, December 22, 2005 - 4:44:43 PM
Last modification on : Thursday, February 1, 2018 - 1:33:24 AM

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M. Morjean. What can we learn from fission times?. 3rd International Workshop on Nuclear Fission and Fission-Product Spectroscopy, May 2005, Cadarache, France. pp.194-201, ⟨10.1063/1.2137247⟩. ⟨in2p3-00025269⟩

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