Narrow Results

Berry's phase of the atom in the state with a positive or negative g factor for partial cycles of a conical rotating magnetic field was determined using a time-domain atom interferometer. The experimental results show that the solid angle for positive g-factor is ϕ(1-cosθ) and that for a negative g-factor is ϕ(1+cosθ) addition to the reversing the sign.

We present a new technique for measuring angular correlations between γ-rays emitted by the fragments from the spontaneous fission of ²⁵²Cf and measured with Gammasphere. For states with short lifetimes (≤10ps), these correlations can be used to determine the spin and parity of unknown levels. For states with long lifetimes, the technique can be used to determine the g-factor of the level in question by measuring the attenuation of the correlation caused by rotation of the nucleus about the randomly oriented domains in an un-magnetized iron foil. Applying our new method to our set of triple coincidence data, we have been able to assign spins to new levels in ^108,110,112Ru. Mixing ratio and g-factor measurements are also discussed.