Longitudinal Polarization of O14 Positrons

J. C. Hopkins, J. B. Gerhart, F. H. Schmidt, and J. E. Stroth
Phys. Rev. 121, 1185 – Published 15 February 1961
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Abstract

The longitudinal polarization of positrons from the pure Fermi transition of O14 has been studied by the method of Bhabha scattering. A prismatic beta-ray spectrometer selected 1.0-Mev positrons which then were focused by a solenoidal magnetic lens on a Supermendur foil magnetized by the lens. Scattered positrons and recoil electrons were detected in fast coincidence. The scattering asymmetry observed upon reversal of the lens magnetic field was (4.16±0.80)%, which corresponds to positron longitudinal polarization + (0.97±0.19) v/c.

  • Received 3 October 1960

DOI:https://doi.org/10.1103/PhysRev.121.1185

©1961 American Physical Society

Authors & Affiliations

J. C. Hopkins*, J. B. Gerhart, F. H. Schmidt, and J. E. Stroth

  • Department of Physics, University of Washington, Seattle, Washington

  • *Now at Los Alamos Scientific Laboratory, Los Alamos, New Mexico.
  • Now at San Jose State College, San Jose, California.

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Vol. 121, Iss. 4 — February 1961

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