Elsevier

Nuclear Physics A

Volume 341, Issue 2, 2 June 1980, Pages 269-283
Nuclear Physics A

A search for the electric dipole moment of the neutron using ultracold neutrons

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Abstract

The results of measurements of the electric dipole moment (EDM) of the neutron using ultra-cold neutrons (UCN) are presented. A description is given of the source of UCN devised, and of a magnetic resonance spectrometer confining UCN for ≈ 5 s. The use of a double-chamber spectrometer and a system for double analysis of polarization enabled us to eliminate most of the systematic errors possible.

The measurements resulted in the EDM d=(4±7.5) × 10−25e · cm. From this it is inferred that ¦d¦ < 1.6 × 10−24e · cm at the confidence level of 90%.

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Also at the Institute for Nuclear Research of the Academy of Sciences Moscow. USSR.

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