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

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

2007-02-12

arxiv.org/abs/nucl-ex/0702026v1

Phys.Rev.Lett.99:042701,2007

Physics

Nuclear Physics

Nuclear Experiment

7 pages, 4 figures, background information at http://www-win.gsi.de/charms/

Scientific paper

10.1103/PhysRevLett.99.042701

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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