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Transition quadrupole moments in the superdeformed band of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>40</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:math>

C. J. ChiaraDepartment of Chemistry, Washington University, St. Louis, Missouri 63130E. IdeguchiDepartment of Chemistry, Washington University, St. Louis, Missouri 63130M. DevlinDepartment of Chemistry, Washington University, St. Louis, Missouri 63130D. R. LaFosseDepartment of Chemistry, Washington University, St. Louis, Missouri 63130F. LermaDepartment of Chemistry, Washington University, St. Louis, Missouri 63130W. ReviolDepartment of Chemistry, Washington University, St. Louis, Missouri 63130S. K. RyuDepartment of Chemistry, Washington University, St. Louis, Missouri 63130D. G. SarantitesDepartment of Chemistry, Washington University, St. Louis, Missouri 63130C. BaktashPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831-6371A. Galindo-UribarriDepartment of Chemistry, Washington University, St. Louis, Missouri 63130M. P. CarpenterPhysics Division, Argonne National Laboratory, Argonne, Illinois, 60439-4843R. V. F. JanssensPhysics Division, Argonne National Laboratory, Argonne, Illinois, 60439-4843T. LauritsenDepartment of Chemistry, Washington University, St. Louis, Missouri 63130C. J. ListerPhysics Division, Argonne National Laboratory, Argonne, Illinois, 60439-4843P. ReiterPhysics Division, Argonne National Laboratory, Argonne, Illinois, 60439-4843D. SeweryniakPhysics Division, Argonne National Laboratory, Argonne, Illinois, 60439-4843P. FallonDepartment of Chemistry, Washington University, St. Louis, Missouri 63130A. GörgenNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720A. O. MacchiavelliDepartment of Chemistry, Washington University, St. Louis, Missouri 63130D. RudolphDepartment of Chemistry, Washington University, St. Louis, Missouri 63130

Physical Review Cjournal2003lv

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The transition quadrupole moments ${Q}_{t}$ for the superdeformed band in ${}^{40}\mathrm{Ca}$ have been determined through thin-target Doppler-shift attenuation analyses. A best-fit value of ${Q}_{t}=1.30\ifmmode\pm\else\textpm\fi{}0.05$ $e\mathrm{b}$ is obtained when a single value is assumed for the entire band. Fitting separate quadrupole moments for in-band transitions decaying from the high-spin states and the presumably admixed low-spin states results in ${Q}_{t}(\mathrm{high}{)=1.81}_{\ensuremath{-}0.26}^{+0.41}$ $e\mathrm{b}$ and ${Q}_{t}(\mathrm{low}{)=1.18}_{\ensuremath{-}0.05}^{+0.06}$ $e\mathrm{b},$ respectively. ${Q}_{t}$ values extracted for individual transitions in a Doppler-broadened line-shape analysis also indicate smaller ${Q}_{t}$ values at lower spins. These results are consistent with the interpretation of this band as an eight-particle--eight-hole superdeformed band with a significant admixture of less-collective configurations at low spins.

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Rare-earth and actinide compounds Inorganic Fluorides and Related Compounds Nuclear physics research studies

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DOI: 10.1103/physrevc.67.041303

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