Abstract
In order to use a wide variety of radioactive nuclei as probes in material research, an on-line isotope separator (ISOL) for fission products has been utilized to produce and accelerate short-lived nuclei suitable for TDPAC experiments. The140Cs isotope (T 1/2=63.7 s) from ISOL has been implanted into YBaCuO compounds to investigate the hyperfine field around a Ba atom. The140Ba-140La source of 3×104 decays/s is obtained for TDPAC experiments on the 329–487 keV γ-γ cascade in140Ce. Another candidate was examined to use the 345–94 keV cascade in the91Rb (T 1/2=58 s) decay. The angular correlation coefficients, however, unfortunately turned out to be fairly small. A tentative result of theg-factor measurement has been given. The details of the present method have been described with emphasis on the application to material research.
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