Possible triaxial structures in Mg24 from O16+Mg24 elastic and inelastic scattering

J. S. Eck, J. Nurzynski, T. R. Ophel, P. D. Clark, D. F. Hebbard, and D. C. Weisser
Phys. Rev. C 23, 2068 – Published 1 May 1981

Abstract

The energy level scheme for the low-lying collective levels of Mg24 are reasonably described by an asymmetric rotor with β2=0.52 and γ=22°. To further investigate possible triaxial structures in Mg24, we have measured elastic and inelastic scattering angular distributions for excitation of the lowest three excited states in Mg24 at an O16 bombarding energy of 67 MeV in the angular range θc.m.=1065°. The measured cross sections have been analyzed using coupled channels calculations assuming that Mg24 behaves as (1) a symmetric rotor and (2) a triaxial rotor. Because of the fact that the 22+ and 41+ states in Mg24 are unresolved, difficulty occurs in distinguishing between the two models. Considering Mg24 to be a triaxial rotor, however, does yield a simple description of the bound states and scattering to the low-lying collective levels.

NUCLEAR REACTIONS Mg24(O16,O16)Mg*24 elastic and inelastic scattering Q=0.00, 1.37, 4.12, and 4.23 MeV at E(O16)=67 MeV. Measured σel(θ) and σinel(θ) for θc.m.=1065°, calculated σel(θ) and σinel(θ) using coupled channels and symmetric and triaxial rotor models.

  • Received 10 September 1980

DOI:https://doi.org/10.1103/PhysRevC.23.2068

©1981 American Physical Society

Authors & Affiliations

J. S. Eck

  • Department of Physics, Kansas State University, Manhattan, Kansas, 66506
  • Department of Nuclear Physics, Australian National University, Canberra, ACT 2600, Australia

J. Nurzynski, T. R. Ophel, P. D. Clark, D. F. Hebbard, and D. C. Weisser

  • Department of Nuclear Physics, Australian National University, Canberra, ACT 2600, Australia

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Vol. 23, Iss. 5 — May 1981

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