Investigation of Electron Capture after- Effects and Environmental Changes in some Barium Compounds with 133Ba Nuclear Probe

Abstract

Perturbed angular correlation parameters in various compounds of barium are measured to investigate influences of chemical and physio-chemical environments in the K-capture decay of ¹³³Ba to ¹³³Cs. It is found that the correlation coefficients of 356-81 keV cascade are attenuated purely as a matter of half-life (T_1/2 = 6.36 ns) of 81 keV intermediate state and the electric field gradients available at the probe site. The results are a step forward to establish insignificance of after-affects preceding K-capture and K-conversion.