Testing the theoretical predictions and affirming chiral behavior in the $A\sim130$ region: Chirality in ${}^{133}Ce$

ORAL

Abstract

Microscopic calculations based on the three dimensional Tilted Axis Cranking (TAC) model have predicted the existence of a chiral partner band to the $\pi(h{}_{11/2}g{}_{7/2})\otimes\nu(h{}_{11/2})$ band in ${}^{133}$Ce. To test this prediction, high spin states in ${}^{133}$Ce were populated with the ${}^{116}Cd({}^{22}Ne,5n) {}^{133}Ce$ fusion evaporation reaction at a beam energy of 112MeV using GAMMASPHERE. A $\Delta I=1$ candidate chiral-band partner built on the $\pi(h{}_{11/2}g{}_{7/2})\otimes\nu(h{}_{11/2})$ configuration has been observed. Details of chiral assignment to this pair of bands will be presented.

*This work is supported in part by NSF (Grant No. PHY07-58100) and DOE (Contract Nos. DE-FG02-95ER40939 and DE-AC02-06CH11357)

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Authors

  • A.D. Ayangeakaa

    • University of Notre Dame

  • U. Garg

    • University of Notre Dame

  • S. Frauendorf

    • University of Notre Dame

  • J.T. Matta

    • University of Notre Dame

  • B.K. Nayak

    • University of Notre Dame

  • S.S. Ghugre

    • UGC-DAE Consortium for Science Research, Kolkata, India

  • M.P. Carpenter

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • C. Chiara

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • C. Hoffman

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • R.V.F. Janssens

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • F. Kondev

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • T. Lauritsen

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • C. Nair

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • D. Seweryniak

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • A. Torben

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • I. Stefanescu

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439

  • S. Zhu

    • Physics Division, Argonne National Laboratory, Argonne, IL 60439