The European Physical Journal A

ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)

Table of Contents

Abstract Volume 2 Issue 2 (1998) pp 123-127

nuclear structure: Quadrupole moment of superdeformed bands in ¹⁵¹Tb

C. Finck (1), O. Stézowski (1), F.A. Beck (1), D.E. Appelbe (4), T. Byrski (1), S. Courtin (1), D.M. Cullen (4), D. Curien (1), G. de France (1), G. Duchêne (1), S. Ertürk (4), B.J.P. Gall (1), U. Garg (3), B. Haas (1), N. Khadiri (1), B. Kharraja (3)(5), N. Kintz (1), A. Nourreddine (1)(5), D. Prévost (1), C. Rigollet (6)(1), H. Savajols (1), P.J. Twin (4), J.P. Vivien (1), K. Zuber (2)(1)

(1) Institut de Recherches Subatomiques, IN2P3-CNRS, F-67037 Strasbourg Cedex 2, France
(2) Institute of Nuclear Physics, PL31-42 Krakow, Poland
(3) University of Notre Dame, Notre Dame, IN 46556, USA
(4) Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
(5) Departement of physics, University Chouaïb Doukkali, B.P. 20 El Jadida, Morocco
(6) National Accelerator Center, PO BOX 72 Faure 7131, South Africa

Received: 25 November 1997 / Revised version: 26 February 1998

Abstract: The quadrupole moments of the first two superdeformed (SD) bands in the nucleus ¹⁵¹Tb have been measured with the Doppler Shift Attenuation Method (DSAM) using the EUROGAM <Gamma>-ray spectrometer. The first excited band (B2) is identical to the yrast SD band of ¹⁵²Dy in terms of dynamical moments of inertia and <Gamma>-ray energies. The measured relative quadrupole moments of the yrast band (B1) with respect to the band B2 are nicely reproduced by self-consitent Hartree-Fock calculations. The variation of the Q₀ value at the bottom of the yrast band suggests a large admixture between wave functions in the normal and the SD wells. This could explain the rather high deexcitation spin for the yrast band.

PACS: 21.10.Ky Electromagnetic moments - 21.10.Tg Lifetimes - 21.10.Re Collective levels

Communicated by B. Herskind

Article in PDF-Format (296 KB)

Online publication: June 16, 1998
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