Phys. Rev. C 47, 1647 - 1658 (1993)Double differential cross sections for neutron emission induced by 256 MeV and 800 MeV protons |
S. Stamer and W. Scobel
I. Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
W. B. Amian, R. C. Byrd, R. C. Haight, and J. L. Ullmann
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
R. W. Bauer, M. Blann, and B. A. Pohl
Lawrence Livermore National Laboratory, Livermore, California 94550
J. Bisplinghoff
Institut für Strahlen- und Kernphysik, Universität Bonn, Bonn, Germany
R. Bonetti
Istituto di Fisica Generale Applicata dell’Università di Milano Istituto Nazionale di Fisica Nucleare, Sezione die Milano, Milano, Italy
Received 2 November 1992
Double differential cross sections were measured for neutron emission induced by 256 MeV and 800 MeV protons incident on Li, Al, Zr, and Pb targets. The experimental spectra obtained are almost exclusively attributable to a preequilibrium emission mechanism and are compared to predictions made by several preequilibrium reaction models. The intranuclear cascade model reproduces the data quite well at both incident energies. Other approaches—the statistical multistep direct model and the hybrid model—reach the limit of applicability in their present form as the pion production threshold is crossed.
©1993 The American Physical Society
URL: http://link.aps.org/abstract/PRC/v47/p1647
DOI: 10.1103/PhysRevC.47.1647
PACS: 24.60.Gv, 25.40.-h
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