Detailed spectroscopy of the chiral-twin candidate bands in 136Pm

D. J. Hartley*, L. L. Riedinger, M. A. Riley, D. L. Balabanski, F. G. Kondev, R. W. Laird, J. Pfohl, D. E. Archer, T. B. Brown, R. M. Clark, M. Devlin, P. Fallon, I. M. Hibbert, D. T. Joss, D. R. LaFosse, P. J. Nolan, N. J. O'Brien, E. S. Paul, D. G. Sarantites, R. K. ShelineS. L. Shepherd, J. Simpson, R. Wadsworth, Jing Ye Zhang, P. B. Semmes, F. Dönau

*Corresponding author for this work

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The chiral-twin candidate bands recently observed in 136Pm have been extended to high spins [I=(21)] using the Gammasphere γ-ray spectrometer and the Microball charged-particle detector array. A more-detailed spectroscopy of the bands was possible, where the rotational alignments and B(M1)/B(E2) ratios confirm that both sequences have the πh11/2νh11/2 configuration. Particle-rotor calculations of intraband and interband transition strength ratios of the chiral-twin bands are compared with experimental values for the first time. Good agreement was found between the predicted transition strength ratios and the experimental values, thus supporting the possible chiral nature of the πh11/2νh11/2 configuration in 136Pm.

Original languageEnglish
Article number031304
Pages (from-to)313041-313045
Number of pages5
JournalPhysical Review C - Nuclear Physics
Issue number3
Publication statusPublished - 1 Jan 2001

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