Freiburg 1999 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 32: Postersitzung / Kernphysik

HK 32.16: Poster

Mittwoch, 24. März 1999, 10:15–12:00, Foyer

Giant Octupole Resonance Simulations — •R. Walke and K. Morawetz — FB Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock

Using a pseudoparticle simulation technique we are able to simulate large amplitude isoscalar octupole excitations in a finite nuclear system. We want to test the hypothesis by Swiatecki and coworkers that octupole motion should be overdamped [1,2]. Dependent on the initialization we can either observe clear octupole modes or overdamped octupole modes which decay immediately into quadrupole ones. We propose that octupole modes should be observed in central asymmetric collisions of heavy ions with mass relation 3:7.

[1] W. Bauer, D. McGrew, V. Zelevinsky, and P. Schuck, Phys. Rev. Lett. 72 (1994) 3771

[2] J.Blocki, J. Skalski, W.J. Swiatecki, Nucl. Phys. A816 (1997) 1

[3] R. Walke, K. Morawetz, Phys. Rev. C., sub