Level Density and Strength Function from Quasicontinuous Decay of Superdeformed Excitations in Lead Nuclei

[摘要] The shape of the spectrum associated with the quasicontinuous (QC) decay of superdeformed rotational bands in even- and odd-mass Pb isotopes is sensitive to the gap in level density at finite temperature and angular momentum at normal deformations. This gap in level density was deduced to be {approx}0.95 MeV at 6{Dirac_h} for {sup 194}Pb and {approx}0.4 MeV at 10{Dirac_h} for {sup 192}Pb, while the shape of the QC spectrum for {sup 195}Pb is consistent with no gap in the level density at about 11{Dirac_h}.

[发布日期] 2002-10-04 [发布机构] Lawrence Livermore National Laboratory

[关键词] Rotational States;Decay;Energy-Level Density;Shape;Strength Functions