K-X-ray-γ-ray directional correlation in the decay of Ba¹³³

Abstract

In view of recent work of Perepelkin on Mn⁵⁴, in which he finds a definite correlation between the K X ray following K capture and the succeeding γ ray, we have measured the directional correlation between K X rays following allowed K capture and the succeeding (303+356) γ rays in the decay of Ba¹³³. Our results can be expressed as W(θ)=1+(0.003±0.004)P₂(cosθ), with an anisotropy of 0.005±0.006. These results imply little or no correlation and are consistent with Dolginov's theory.