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First experiment on fission transients in highly fissile spherical nuclei produced by fragmentation of radioactive beams

Abstract : We report on a novel experimental approach for studying the dissipative spreading of collective motion in a meta-stable nuclear system, using, for the first time, highly fissile nuclei with spherical shape. This was achieved by fragmentation of 45 radioactive heavy-ion beams at GSI, Darmstadt. The use of inverse kinematics and a dedicated experimental set-up allowed for the identification in atomic number of both fission fragments. From the width of their charge distributions, a transient time of (3.3 +/- 0.7) 10-21 s is deduced for initially spherical nuclei.
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http://hal.in2p3.fr/in2p3-00141240
Contributor : Dominique Girod <>
Submitted on : Thursday, April 12, 2007 - 10:42:15 AM
Last modification on : Saturday, April 14, 2018 - 11:46:03 AM

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C. Schmitt, P.N. Nadtochy, A. Heinz, B. Jurado, A. Kelic, et al.. First experiment on fission transients in highly fissile spherical nuclei produced by fragmentation of radioactive beams. Physical Review Letters, American Physical Society, 2007, 99, pp.042701. ⟨10.1103/PhysRevLett.99.042701⟩. ⟨in2p3-00141240⟩

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