Nonequilibrium Population of Magnetic Substates and Excitation-Energy Division in the Decay of an Orbiting Complex

A. Ray, D. D. Leach, R. Vandenbosch, K. T. Lesko, and D. Shapira
Phys. Rev. Lett. 57, 815 – Published 18 August 1986
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Abstract

γ-ray angular correlations have been measured for the strongly damped reaction C12(Si28, C12)Si28 at θc.m.=180° for Ec.m.=42.7 and 33.7 MeV. The C12 4.44-MeV, Jπ=2+ state is found to be produced almost exclusively in the m=0 magnetic substate with respect to the beam axis. Comparison of singles and coincidence yields shows that the C12 comes out in its ground state most of the time (≅ 70%) resulting in the entire excitation energy ≅ 15-20 MeV appearing in Si28. These results can be reproduced by a constrained phase-space calculation.

  • Received 2 May 1986

DOI:https://doi.org/10.1103/PhysRevLett.57.815

©1986 American Physical Society

Authors & Affiliations

A. Ray*, D. D. Leach, and R. Vandenbosch

  • Nuclear Physics Laboratory, University of Washington, Seattle, Washington 98195

K. T. Lesko

  • Argonne National Laboratory, Argonne, Illinois 60439

D. Shapira

  • Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830

  • *Present address: Cyclotron Laboratory, Texas A&M University, College Station, TX 77843.
  • Present address: Lawrence Berkeley Laboratory, Berkeley, CA 94720.

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Vol. 57, Iss. 7 — 18 August 1986

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