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

C. Schmitt·P. N. Nadtochy·A. Heinz·B. Jurado·A. Kelic·K. -H. Schmidt
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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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C. Schmitt, P. N. Nadtochy, A. Heinz, B. Jurado, A. Kelic, K. -H. Schmidt. 2007-02-12. First experiment on fission transients in highly fissile spherical nuclei produced by fragmentation of radioactive beams. https://doi.org/10.1103/physrevlett.99.042701

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