Abstract.
Isomeric states in 253No have been investigated by conversion electron and γ -ray spectroscopy with the GABRIELA detection system. The 31μs isomer reported more than 30 years ago is found to decay to the ground state of 253No by the emission of a 167keV M2 transition. The spin and parity of this low-lying isomeric state are established to be 5/2+ . The presence of another longer-lived isomeric state is also discussed.
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Lopez-Martens, A., Hauschild, K., Yeremin, A.V. et al. Isomeric states in 253No . Eur. Phys. J. A 32, 245–250 (2007). https://doi.org/10.1140/epja/i2007-10391-8
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DOI: https://doi.org/10.1140/epja/i2007-10391-8