Low-energy fission investigated in reactions of 750 AMeVU-ions with Pb and Be targets.

Autor: Armbruster, P., Bernas, M., Czajkowski, S., Geissel, H., Aumann, T., Dessagne, Ph., Donzaud, C., Hanelt, E., Heinz, A., Hesse, M., Kozhuharov, C., Miehe, Ch., Münzenberg, G., Pfützner, M., Schmidt, K., Schwab, W., Stéphan, C., Sümmerer, K., Tassan-got, L., Voss, B.
Zdroj: Zeitschrift für Physik A Hadrons & Nuclei; 1996, Vol. 355 Issue 1, p191-201, 11p
Abstrakt: Charge distributions of fragments from low energy nuclear fission are investigated in reactions of highly fissileU projectiles at relativistic energies (750 A·MeV) with a heavy (Pb) and a light (Be) target. The fully stripped fission fragments are separated by the Fragment Separator (FRS). Their high kinetic energies in the laboratory system allow the identification of all atomic numbers by using Multiple-Sampling Ionization Chambers (MUSIC). The elemental distributions of fragments observed at larger magnetic rigidities than theU projectiles show asymmetric break-up and odd-even effects. They indicate a low energy fission process, induced mainly by dissociation in the electro-magnetic field for the U/Pb-system, or by peripheral nuclear interactions for the U/Be-system. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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