Gamma Rays from Fast-Neutron Scattering in Fe54

R. W. Benjamin and I. L. Morgan
Phys. Rev. 163, 1252 – Published 20 November 1967
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Abstract

Cross sections for the production of γ rays by the inelastic scattering of neutrons in Fe54 have been measured for incident neutron energies in the range 1.81 to 5.25 MeVlab. γ-ray angular distributions have been measured for γ radiation of sufficient intensity at neutron energies of 1.81 and 4.0 MeV. The angular distributions compare favorably in shape with the theoretical predictions of the Satchler formalism using the neutron penetrabilities of Beyster and of Perey and Buck, but there are small differences in absolute cross sections which can be resolved in part through the incorporation of a correction for Moldauer level-width fluctuations. A multipole amplitude mixing ratio of 0δ+2.2 was determined for the M1, E2 transition from the 2.961-MeV(2+) to the 1.409-MeV(2+) level. Branching ratios for the γ rays stemming from the 2.961-MeV level and the 3.161-MeV level were also determined experimentally.

  • Received 12 June 1967

DOI:https://doi.org/10.1103/PhysRev.163.1252

©1967 American Physical Society

Authors & Affiliations

R. W. Benjamin*,† and I. L. Morgan

  • Texas Nuclear Corporation, Austin, Texas

  • *Present address: Laboratorium für Kernphysik, Eidg. Technische Hochschule, Zürich, Switzerland.
  • This work supported in part by the U. S. Atomic Energy Commission.

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Issue

Vol. 163, Iss. 4 — November 1967

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