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On the double and triple-humped fission barriers and half-lives of actinide elements

Abstract : The deformation barriers standing in the quasi-molecular shape path have been determined in the actinide region within a macroscopic-microscopic energy derived from a generalized liquid drop model, the algebraic droplet model shell corrections and analytic expressions for the pairing energies. Double and triple-humped fission barriers appear. The second barrier corresponds to the transition from one-body shapes to two touching ellipsoids. The third minimum and third peak, when they exist, come from shell rearrangements in the deformed fragment. The shape of the other almost magic one is close to the sphere. The barrier heights agreewith the experimental results, the energy of the second minimum being a little too high. The predicted half-lives follow the experimental data trend.
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http://hal.in2p3.fr/in2p3-00023212
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Wednesday, October 13, 2004 - 10:58:55 AM
Last modification on : Wednesday, April 27, 2022 - 3:53:29 AM
Long-term archiving on: : Thursday, April 1, 2010 - 3:25:27 PM

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C. Bonilla, Guy Royer. On the double and triple-humped fission barriers and half-lives of actinide elements. 2004, pp.1-21. ⟨in2p3-00023212⟩

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