The European Physical Journal A

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

Table of Contents

Abstract Volume 2 Issue 3 (1998) pp 249-251

short notes: Quadrupole moment measurement of the highly deformed <pi>g_9/2 \otimes <nu>h_11/2 band in ¹³⁰Pr

F.G. Kondev (1), M.A. Riley (1), T.B. Brown (1), R.M. Clark (2), M. Devlin (3), P. Fallon (2), D.J. Hartley (1), I.M. Hibbert (4) (a), D.T. Joss (5), D.R. LaFosse (3) (b), R.W. Laird (1), F. Lerma (3), M. Lively (1), P.J. Nolan (5), N.J. O'Brien (4), E.S. Paul (5), J. Pfohl (1), D.G. Sarantites (3), R.K. Sheline (1), S.L. Shepherd (5), J. Simpson (6), R. Wadsworth (4)

(1) Department of Physics, Florida State University, Tallahassee, FL 32306, USA
(2) Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
(3) Department of Chemistry, Washington University, St. Louis, MO 63130, USA
(4) Department of Physics, University of York, Heslington, York Y01 5DD, UK
(5) Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, UK
(6) CCLRC, Daresbury Laboratory, Daresbury, Warrington WA4 4AD, UK

Received: 23 April 1998

Abstract: The quadrupole moment for the <pi>g_9/2 \otimes <nu>h_11/2 band in the ^130>Pr nucleus has been measured using the Doppler-shift attenuation method. A centroid shift analysis was carried out and a value of Q₀=6.1±0.4 eb, corresponding to an axial prolate deformation of <beta>₂=0.35(3), has been determined. This is the first direct experimental confirmation of the deformation-driving character of the <pi>g_9/2 orbital in an odd-odd nucleus in the A\simeq135 superdeformed region.

PACS: 21.10.Tg Lifetimes - 21.10.Re Collective levels - 23.20.Lv Gamma transitions and level energies - 27.60.+j 90 \leq A \leq 149

(a) Present address: Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, UK
(b) Present address: State University of New York at Stony Brook, NY 11794, USA
Communicated by B. Herskind

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Online publication: July 16, 1998
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