The 2933-keV isomer in 187Ta decays by internal gamma emission and beta decay with a half-life of 136(24) s, implying a spin of at least 35/2 and a prolate five-quasiparticle structure.
The mea- surements of the growth and decay curves were carried out using macroscopically pulsed 187Ta+ beams with a Ton/Toff condition of 1800/1800 s
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Direct observation of $\beta$ and $\gamma$ decay from a high-spin long-lived isomer in $^{187}$Ta
The 2933-keV isomer in 187Ta decays by internal gamma emission and beta decay with a half-life of 136(24) s, implying a spin of at least 35/2 and a prolate five-quasiparticle structure.