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On the multiple-humped fission barriers and half-lives of actinides

Abstract : The energy of actinide nuclei has been determined within a generalized liquid drop model taking into account the proximity energy, the mass and charge asymmetry, an accurate nuclear radius in adding the shell and pairing energies. Double and triple-humped potential barriers appear. The second maximum corresponds to the transition from compact and creviced one-body shapes to two touching ellipsoids. A third minimum and third peak appear in special asymmetric exit channels where one fragment is almost a magic nucleus with a quasi-spherical shape while the other one evolves from oblate to prolate shapes. The heights of the double and triple-humped fission barriers agree precisely with the experimental results in all the actinide region. The predicted half-lives follow the experimental data trend.
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http://hal.in2p3.fr/in2p3-00025719
Contributor : Dominique Girod <>
Submitted on : Thursday, March 2, 2006 - 1:41:57 PM
Last modification on : Tuesday, February 11, 2020 - 10:26:05 AM
Long-term archiving on: : Saturday, April 3, 2010 - 8:14:34 PM

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  • HAL Id : in2p3-00025719, version 1

Citation

C. Bonilla, G. Royer. On the multiple-humped fission barriers and half-lives of actinides. Heavy Ion Physics, 2006, 25, pp.11-28. ⟨in2p3-00025719⟩

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