g factor of the 632 keV (5/2+) level in 77As

The g factor of the 632 keV level (T₁/₂=60±6 psec) in ⁷⁷As, populated in the 11.3 h β⁻ decay of ⁷⁷Ge, has been measured using the perturbed angular correlation technique. Large magnetic hyperfine fields present at arsenic in an iron host are used. Measurements were made using the 558-417 keV γ cascade through the 632 keV level. From the directional correlation of this cascade and the measured mean precession angle ωτ for the 632 keV level, the g factor for this state has been calculated. The results obtained are ωτ=0.148±0.019 and g=+1.01±0.16. The measured value of the g factor is compared with the predictions of various nuclear models applicable to nuclei in this region.RADIOACTIVITY ⁷⁷Ge, measured γγ(θ), γγ(θ,H). ⁷⁷As levels, deduced g.