New information on excited states below the µs isomer in $^{136}$Sb
- Simpson, G.S.
- Angélique, J.C.
- Genevey, J.
- Pinston, J.A.
- Covello, A.
- Gargano, A.
- Köster, U.
- Orlandi, R.
- Scherillo, A.
DOIAbstract
New experimental information has been obtained on the µs isomeric cascade in the very neutron-rich 136Sb using gamma-ray and conversion-electron spectroscopy at the Lohengrin mass spectrometer of the Institut Laue-Langevin. Two new transitions have been observed and their multipolarities determined, resolving the question of the origin of the isomerism. The new level scheme is in good agreement with predictions of a realistic shell-model calculation. The isomeric state is tentatively assigned a spin and parity of 6- and a proposed pig7/2nu(f7/2)3 dominant configuration
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