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

Cizewski, J A ; Johnson, M ; McNabb, D P

Lawrence Livermore National Laboratory

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

DOI  :  10.2172/15002528
RP-ID  :  UCRL-ID-150816
RP-ID  :  W-7405-ENG-48
RP-ID  :  15002528

美国|英语

来源: UNT Digital Library

【 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}.