Quadrupole moments and identical superdeformed bands in 149Tb

B. Kharraja, U. Garg, H. Jin, R. J. Ernst, S. S. Ghugre, R. V. F Janssens, M. P. Carpenter, S. M. Fischer, T. L. Khoo, T. Lauritsen, D. Nisius, E. F. Moore, Th. Byrski, R. Krücken, A. O. Macchiavelli, R. MacLeod, R. Kaczarowski, and I. M. Govil
Phys. Rev. C 58, 1422 – Published 1 September 1998
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Abstract

Five superdeformed (SD) bands have been observed in 149Tb, using the Gammasphere spectrometer. The measurement was performed with a backed target to obtain lifetime information from a Doppler-shift attenuation method analysis. It is proposed that the yrast SD band corresponds to the 148Gd(yrast)π63 intruder configuration. The first excited band (band 2) is found to be identical to the 150Tb yrast SD band. Band 3 is proposed to correspond to the π[301]1/2(α=1/2)[651]3/2(α=1/2) proton-hole excitation coupled to the π64ν71(ν[651]1/2)1 intruder configuration. Bands 4 and 5, the weakest SD bands seen in the present work, show similarities with band 3 and are most likely associated with a similar intruder configuration.

  • Received 9 April 1998

DOI:https://doi.org/10.1103/PhysRevC.58.1422

©1998 American Physical Society

Authors & Affiliations

B. Kharraja*, U. Garg, H. Jin, R. J. Ernst, and S. S. Ghugre

  • Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556

R. V. F Janssens, M. P. Carpenter, S. M. Fischer, T. L. Khoo, T. Lauritsen, and D. Nisius

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

E. F. Moore

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695

Th. Byrski

  • I.Re.S, IN2P3, Université Louis Pasteur, Strasbourg 67037, France

R. Krücken, A. O. Macchiavelli, and R. MacLeod

  • Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, Califonia 94720

R. Kaczarowski

  • Soltan Institute for Nuclear Studies, 05-400 Swierk, Poland

I. M. Govil

  • Department of Physics, Panjab University, Chandigarh 160 014, India

  • *On leave from Department of Physics, Univ. Chouaib Doukkali, BP20, El Jadida, Morocco.
  • Present address: IUCDAEF-Calcutta Centre, Calcutta 700 064, India.
  • Present address: W. A. Wright Nuclear Structure Laboratory, Physics Department, Yale University, New Haven, CT 06520.

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Vol. 58, Iss. 3 — September 1998

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