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APS » Journals » Phys. Rev. Lett. » Volume 58 » Issue 23
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Phys. Rev. Lett. 58, 2404–2407 (1987)

Enhancement of the relative (ΔS=1)/(ΔS=0) response of 40Ca at high excitation energies

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C. Glashausser, K. Jones, F. T. Baker, L. Bimbot, H. Esbensen, R. W. Fergerson, A. Green, S. Nanda, and R. D. Smith
Rutgers University, New Brunswick, New Jersey 08903;
Los Alamos National Laboratory, Los Alamos, New Mexico 87545;
University of Georgia, Athens, Georgia 30602;
Institut de Physique Nucléaire, F-91406 Orsay Cedex, France;
Argonne National Laboratory, Argonne, Illinois 60440;
University of Minnesota, Minneapolis, Minnesota 55455; and
Lawrence Livermore Laboratory, Livermore, California 94550

Received 24 February 1987; published in the issue dated 8 June 1987

Spin-flip probabilities have been measured for inelastic proton scattering from 40Ca at 319 MeV at angles between 3° and 12° and excitation energies up to about 40 MeV. These data can be directly related to the relative [(spin transfer)/(no spin transfer)] nuclear response via one model-dependent variable. Nuclear spin excitations appear relatively suppressed at low excitation energies but surprisingly enhanced at the highest excitation energies at intermediate angles. Many features of the data can be explained with a slab nuclear response with random-phase-approximation correlations.

© 1987 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.58.2404
DOI:
10.1103/PhysRevLett.58.2404
PACS:
25.40.Ep, 27.40.+z
 
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