METHOD FOR MEASURING ANOMALOUS MAGNETIC MOMENT OF FREE ELECTRONS

It is shown that a previously described method for measuring the spin resonance of free electrons in a trap can also be used to measure their (g-2) anomaly. The electrons are trapped in an electrostatic quadrupole field with a superimposed homogeneous axial magnetic field, and are polarized by spin exchange. The spin and (g-2) resonance are monitored through the spin dependence of the excitation process e+Na (3 S)→e+Na(3 P). Calculations are made of the energy levels and transition probabilities of the trapped electrons. © 1969 Springer-Verlag.