Superdeformation in $^{198}$Po

Details Superdeformation in $^{198}$Po Superdeformation in $^{198}$Po

1995-11-17

arxiv.org/abs/nucl-ex/9511002v1

Phys.Rev.C53:544-548,1996

Physics

Nuclear Physics

Nuclear Experiment

10 pages, revtex, 2 figs. available on request, submitted to Phys. Rev. C. (Rapid Communications)

Scientific paper

10.1103/PhysRevC.53.544

The $^{174}$Yb($^{29}$Si,5n) reaction at 148 MeV with thin targets was used to populate high-angular momentum states in $^{198}$Po. Resulting $\gamma$ rays were observed with Gammasphere. A weakly-populated superdeformed band of 10 $\gamma$-ray transitions was found and has been assigned to $^{198}$Po. This is the first observation of a SD band in the $A \approx 190$ region in a nucleus with $Z > 83$. The ${\cal J}^{(2)}$ of the new band is very similar to those of the yrast SD bands in $^{194}$Hg and $^{196}$Pb. The intensity profile suggests that this band is populated through states close to where the SD band crosses the yrast line and the angular momentum at which the fission process dominates.

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