Identification and Quadrupole-Moment Measurement of a Superdeformed Band in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>84</mn></mrow></msup></mrow></math></span>Zr

H.-Q. Jin; C. Baktash; M. J. Brinkman; C. J. Gross; D. G. Sarantites; I. Y. Lee; B. Cederwall; F. Cristancho; J. Döring; F. E. Durham; P.-F. Hua; G. D. Johns; M. Korolija; D. R. LaFosse; E. Landulfo; A. O. Macchiavelli; W. Rathbun; J. X. Saladin; D. W. Stracener; S. L. Tabor; T. R. Werner

doi:10.1103/PhysRevLett.75.1471

Identification and Quadrupole-Moment Measurement of a Superdeformed Band in $^{84}$ Zr

H.-Q. Jin, C. Baktash, M. J. Brinkman, C. J. Gross, D. G. Sarantites, I. Y. Lee, B. Cederwall, F. Cristancho, J. Döring, F. E. Durham, P.-F. Hua, G. D. Johns, M. Korolija, D. R. LaFosse, E. Landulfo, A. O. Macchiavelli, W. Rathbun, J. X. Saladin, D. W. Stracener, S. L. Tabor, and T. R. Werner

Phys. Rev. Lett. 75, 1471 – Published 21 August 1995

Abstract

High-spin states in $^{84} Zr$ were studied using the early implementation phase of the Gammasphere array and the “Microball” charged-particle detector system. A cascade of nine $γ$ rays with a dynamic moment of inertia which is characteristic of superdeformed rotational bands in the $A = 80$ region has been identified and assigned to $^{84} Zr$ . The measured transition quadrupole moment of the band corresponds to a prolate quadrupole deformation of $β_{2} = 0.53$ and confirms the superdeformed nature of this band. This is the first direct experimental confirmation of the existence of the predicted superdeformed shell gap at $N ≃ 44$ particle number.

Received 14 April 1995

DOI:https://doi.org/10.1103/PhysRevLett.75.1471

Authors & Affiliations

H.-Q. Jin^1,2, C. Baktash¹, M. J. Brinkman¹, C. J. Gross³, D. G. Sarantites⁴, I. Y. Lee⁵, B. Cederwall⁵, F. Cristancho⁶, J. Döring⁷, F. E. Durham⁸, P.-F. Hua⁴, G. D. Johns⁷, M. Korolija⁴, D. R. LaFosse⁴, E. Landulfo⁶, A. O. Macchiavelli⁵, W. Rathbun⁵, J. X. Saladin⁶, D. W. Stracener¹, S. L. Tabor⁷, and T. R. Werner^1,9,10

¹Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
²Department of Physics, Rutgers University, New Brunswick, New Jersey 08903
³UNISOR, Oak Ridge Institute of Science and Education, Oak Ridge, Tennessee 37831
⁴Chemistry Department, Washington University, St. Louis, Missouri 63130
⁵Nuclear Science Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
⁶Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
⁷Department of Physics, Florida State University, Tallahassee, Florida 32306
⁸Department of Physics, Tulane University, New Orleans, Louisiana 70118
⁹Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
¹⁰Institute of Theoretical Physics, Warsaw University, PL-00-681, Warsaw, Poland