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

摘要

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 (T1/2 = 6.36ns) 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.