Empirical Investigation of Extreme Single-Particle Behavior of Nuclear Quadrupole Moments in Highly Collective <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>150</mn></math></span> Superdeformed Bands

S. T. Clark; G. Hackman; R. V. F. Janssens; R. M. Clark; P. Fallon; S. N. Floor; G. J. Lane; A. O. Macchiavelli; J. Norris; S. J. Sanders; C. E. Svensson

doi:10.1103/PhysRevLett.87.172503

Empirical Investigation of Extreme Single-Particle Behavior of Nuclear Quadrupole Moments in Highly Collective $A \sim 150$ Superdeformed Bands

S. T. Clark, G. Hackman, R. V. F. Janssens, R. M. Clark, P. Fallon, S. N. Floor, G. J. Lane, A. O. Macchiavelli, J. Norris, S. J. Sanders, and C. E. Svensson

Phys. Rev. Lett. 87, 172503 – Published 9 October 2001

Abstract

The intrinsic quadrupole moment $Q_{0}$ of superdeformed rotational bands in $A \sim 150$ nuclei depends on the associated single-particle configuration. We have derived an empirical formula based on the additivity of effective quadrupole moments of single-particle orbitals that describes existing measurements from $^{142} Sm$ to $^{152} Dy$ . To further test the formula, the predicted $Q_{0}$ moments for two superdeformed bands in $^{146} Gd$ of $14.05 e b$ were confronted with a new measurement yielding $13.9 \pm 0.4 e b$ and $13.9 \pm 0.3 e b$ , respectively. This excellent agreement provides empirical evidence of extreme single-particle behavior in highly deformed, collective systems.

Received 4 June 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.172503

Authors & Affiliations

S. T. Clark^1,*, G. Hackman^1,†, R. V. F. Janssens², R. M. Clark³, P. Fallon³, S. N. Floor¹, G. J. Lane^3,‡, A. O. Macchiavelli³, J. Norris¹, S. J. Sanders¹, and C. E. Svensson^3,§

¹Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045
²Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
³Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

^*Present address: Physics Department, Boston University, Boston, MA 02215.
^†Present address: TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada.
^‡Present address: Department of Nuclear Physics, Australia National University, Canberra, ACT 0200, Australia.
^§Present address: Department of Physics, University of Guelph, Guelph, ON N1G 2W1, Canada.