A TECHNIQUE FOR OBSERVATION OF THE NUCLEAR MAGNETIC RESONANCE OF SOME SHORT-LIVED NUCLIDES AND ITS APPLICATION TO THE MEASUREMENT OF THE NUCLEAR g-FACTOR OF Li8

摘要

A novel technique is described for the observation of the nuclear magnetic resonance of some short-lived nuclides;namely, those which may be produced by slow-neutron capture and which decay by beta-emission. Substantial nuclear polarization (≧ 10 per cent) is obtained by the use of polarized neutrons, permitting observation of the parity-violating anisotropy in the beta-emission as a relative measure of the polarization and hence of its change when (in addition to a strong static magnetic field) an r.f. magnetic field is applied. The resonance depolarization curves thus obtained give the Larmor frequency and hence the nuclear g-factor directly. The g-factor of Li8 has been measured in this manner.