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  • Decay of La<SUP>134</SUP>

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Gamma rays in the decay of Ce134→La134→Ba134 were investigated with a lithium drifted germanium detector. Gamma rays of energies 0.605±0.001 and 0.563±0.001 MeV were assigned to the decay of La134. The log ft values were deduced from the gamma ray intensities. That for the first beta component from the 1+ parent nuclide La134 to the ground state of Ba134 is 4.81±0.02 and those for the second component to the first 2+ state and the third component to the second 2+ state range from 5.60±0.08 to 5.65±0.11 and from 6.24±0.17 to 6.54±0.99 respectively, depending on the assumed decay schemes. These values indicate that the successive hindrance phenomenon of allowed beta transitions of G–T type in vibrational region exists in the decay treated in the present experiment.

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