Maqola

Decay and properties of the yrast superdeformed band in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>192</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Pb

D. P. McNabbDepartment of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903J. A. CizewskiDepartment of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903Ke DingDepartment of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903Ν. FotiadesDepartment of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903D. E. ArcherLawrence Livermore National Laboratory, Livermore, California 94550J. A. BeckerLawrence Livermore National Laboratory, Livermore, California 94550L. A. BernsteinLawrence Livermore National Laboratory, Livermore, California 94550K. HauschildLawrence Livermore National Laboratory, Livermore, California 94550W. YounesLawrence Livermore National Laboratory, Livermore, California 94550R. M. ClarkNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720P. FallonNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720I. Y. LeeNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720A. O. MacchiavelliNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720R. W. MacLeodNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

1997lv

ABI

Annotatsiya

The ${}^{173}$Yb${(}^{24}$Mg,$5n)$ reaction at $E$${(}^{24}$Mg) = 134.5 MeV with a gold-backed target was used to populate high-angular momentum states in ${}^{192}$Pb. Resulting $\ensuremath{\gamma}$ rays were detected with Gammasphere located at the 88-Inch Cyclotron. A discrete transition of energy ${E}_{\ensuremath{\gamma}}$ = 2057.7(6) keV has been identified in the depopulation the yrast superdeformed (SD) band in ${}^{192}$Pb. This transition has been tentatively placed in the level scheme based on coincidence relationships. Thus, the excitation energy of the SD level populated by the 262-keV in-band transition is tentatively assigned ${E}_{x}$ = 4.572(1) MeV. Confidence limits are discussed. Other transitions in coincidence with the SD band and general features of the band and its decay are also presented. In particular, we confirm that the ${\mathcal{J}}^{(2)}$ of the SD band decreases by $\ensuremath{\approx}13%$ at the lowest frequency. Also, by comparing the masses of the SD ground states in ${}^{192,194}$Pb to liquid drop model expectations and to each other we have been able to confirm enhanced stability for $N=112$ at superdeformation.

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DOI: 10.1103/physrevc.56.2474

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