Nature of the 153 and 270 keV Transitons in ¹¹⁹Sb from ^119mTe

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The 153 and 270 keV transitions in ¹¹⁹Sb have been investigated for the presence of any anomalous conversion through conversion electron intensity and conversion-electron gamma and gamma-gamma directional correlation measurements. The resulting subshell ratios and particle parameters have been analysed for the accurate determination of mixing ratios for the transitions. The results are δ₁₅₃=±0.0025 and δ₂₇₀=0.10_−0.20^+0.03. The conversion process has been found to be normal in both cases.