Göttingen 1997 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 59: Postersitzung

HK 59.4: Poster

Donnerstag, 27. März 1997, 14:00–16:30, P

Long-lived Isomeric States Obtained via the ²⁸Si + ¹⁸¹Ta Reaction at 125 MeV — •A. Marinov¹, S. Gelberg¹, and D. Kolb² — ¹Racah Institute of Physics, The Hebrew University, Jerusalem — ²Fachbereich Physik, Universität Kassel, 34109 Kassel

The reaction ²⁸Si + ¹⁸¹Ta has been studied at a bombarding energy of 125 MeV using C catcher foils [1]. Long-lived coincidence events between 8 - 9.1 MeV α - particles and various γ - rays and time correlations between different α - particles have been found. The time correlated α - particle events fit with theoretical predictions for transitions from the second minima of the potential energy surfaces to the second minima of the daughter nuclei, and to the ground states of various nuclei. The data are interpreted in terms of productions of long-lived isomeric states coupled to the second well of the potential.

[1] A. Marinov, S. Gelberg and D. Kolb, Int. Workshop on Physics of Unstable Nuclear Beams, Sao Paulo, Brazil (1996)