nHe4 Elastic Scattering near 20 MeV

A. Niiler, M. Drosg, J. C. Hopkins, J. D. Seagrave, and E. C. Kerr
Phys. Rev. C 4, 36 – Published 1 July 1971
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Abstract

The differential cross sections for the elastic scattering of neutrons by He4 have been measured at incident neutron energies of 17.6, 20.9, and 23.7 MeV for lab angles between 20 and 140°. The cross sections were measured relative to the H1(n,n)H1 cross sections by the neutron time-of-flight technique. The 0.75MHe4 scattering sample was a liquid contained in a thin-walled cryostat. Corrections were made for multiple scattering and attenuation. Phase-shift analyses were performed using both differential-cross-section and polarization data. The present phase shifts are joined to the well-established low-energy phase shifts giving a smooth energy dependence.

  • Received 1 February 1971

DOI:https://doi.org/10.1103/PhysRevC.4.36

©1971 American Physical Society

Authors & Affiliations

A. Niiler*, M. Drosg, J. C. Hopkins, J. D. Seagrave, and E. C. Kerr

  • Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87544

  • *Present address: Nuclear Effects Laboratory, Edgewood Arsenal, Edgewood, Maryland 21010.
  • On leave from the University of Vienna, Vienna, Austria.

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Vol. 4, Iss. 1 — July 1971

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