On the Determination of the Signs of Nuclear Magnetic Moments by the Molecular Beam Method of Magnetic Resonance

It is shown that the molecular beam magnetic resonance method for measuring nuclear magnetic moments is capable of determining the sign of a nuclear moment even though an oscillating perturbing field is substituted for the rotating field required by the theory. The sign determination is obtained from an asymmetry in the resonance curve introduced by the end effects of the oscillating field. The signs of the nuclear moments of ${\mathrm{Li}}^6$, ${\mathrm{Li}}^7$ and ${\mathrm{F}}^{19}$ were found to be positive, in agreement with known results.