Experimental Limit to the Electric Dipole Moment of the Neutron

Phys. Rev. 108, 120 – Published 1 October 1957
J. H. Smith, E. M. Purcell, and N. F. Ramsey

Abstract

An experimental measurement of the electric dipole moment of the neutron by a neutron-beam magnetic resonance method is described. The result of the experiment is that the electric dipole moment of the neutron equals the charge of the electron multiplied by a distance D=(-0.1±2.4)×10-20 cm. Consequently, if an electric dipole moment of the neutron exists and is associated with the spin angular momentum, its magnitude almost certainly corresponds to a value of D less than 5×10-20 cm.

DOI: http://dx.doi.org/10.1103/PhysRev.108.120

  • Received 17 May 1957
  • Published in the issue dated October 1957

© 1957 The American Physical Society

Authors & Affiliations

J. H. Smith*, E. M. Purcell, and N. F. Ramsey

  • Oak Ridge National Laboratory, Oak Ridge, Tennessee, and Harvard University, Cambridge, Massachusetts

  • *Now at the University of Illinois, Urbana, Illinois.

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