Observation and Quadrupole-Moment Measurement of the First Superdeformed Band in the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="italic">A</mi><mi></mi><mi>∼</mi><mi></mi><mn>60</mn></math></span> Mass Region

C. E. Svensson; C. Baktash; J. A. Cameron; M. Devlin; J. Eberth; S. Flibotte; D. S. Haslip; D. R. LaFosse; I. Y. Lee; A. O. Macchiavelli; R. W. MacLeod; J. M. Nieminen; S. D. Paul; L. L. Riedinger; D. Rudolph; D. G. Sarantites; H. G. Thomas; J. C. Waddington; W. Weintraub; J. N. Wilson; A. V. Afanasjev; I. Ragnarsson

doi:10.1103/PhysRevLett.79.1233

Observation and Quadrupole-Moment Measurement of the First Superdeformed Band in the $A \sim 60$ Mass Region

C. E. Svensson, C. Baktash, J. A. Cameron, M. Devlin, J. Eberth, S. Flibotte, D. S. Haslip, D. R. LaFosse, I. Y. Lee, A. O. Macchiavelli, R. W. MacLeod, J. M. Nieminen, S. D. Paul, L. L. Riedinger, D. Rudolph, D. G. Sarantites, H. G. Thomas, J. C. Waddington, W. Weintraub, J. N. Wilson, A. V. Afanasjev, and I. Ragnarsson

Phys. Rev. Lett. 79, 1233 – Published 18 August 1997

Abstract

A high-spin rotational cascade of six $γ$ rays has been observed in $^{62} Zn$ . The quadrupole moment of ${2.7}_{- 0.5}^{+ 0.7} e b$ measured for this band corresponds to a deformation $β_{2} {= 0.45}_{- 0.07}^{+ 0.10}$ . The properties of this band are in excellent agreement with calculations that predict high-spin superdeformed bands in $^{62} Zn$ with deformations $β_{2} = 0.41 - 0.49$ . These results establish a new region of superdeformation for nuclei with neutron and proton numbers $N, Z \approx 30 - 32$ .

Received 6 May 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.1233

Authors & Affiliations

C. E. Svensson¹, C. Baktash², J. A. Cameron¹, M. Devlin³, J. Eberth⁴, S. Flibotte¹, D. S. Haslip¹, D. R. LaFosse³, I. Y. Lee⁵, A. O. Macchiavelli⁵, R. W. MacLeod⁵, J. M. Nieminen¹, S. D. Paul², L. L. Riedinger⁶, D. Rudolph⁷, D. G. Sarantites³, H. G. Thomas⁴, J. C. Waddington¹, W. Weintraub⁶, J. N. Wilson¹, A. V. Afanasjev⁸, and I. Ragnarsson⁸

¹Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
²Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6371
³Chemistry Department, Washington University, St. Louis, Missouri 63130
⁴Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
⁵Nuclear Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
⁶Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
⁷Sektion Physik, Ludwig-Maximilians-Universität München, D-85748 Garching, Germany
⁸Department of Mathematical Physics, Lund Institute of Technology, S-22100 Lund, Sweden