Isomer spectroscopy of ²⁵⁴No
A number of experiments were carried out to clarify the structure and decay path of an isomeric state in ²⁵⁴No [Gh73, He06, Ta06]. A band built on the 1298 keV Kπ = 8- isomer was found. From the observed branching ratios in this band a two-proton configuration is favoured for this state, which furth...
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University of Liverpool
2008
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501596 |
| Summary: | A number of experiments were carried out to clarify the structure and decay path of an isomeric state in ²⁵⁴No [Gh73, He06, Ta06]. A band built on the 1298 keV Kπ = 8- isomer was found. From the observed branching ratios in this band a two-proton configuration is favoured for this state, which further supports our earlier conclusions [He08] that the deformed shell closures in this mass region are at Z = 100 and N = 152, in contradiction to predictions by Skyrme-Hartree-Fock models [Cha06]. Furthermore, the level scheme of ²⁵⁴No was extended to include a floating band and a systematic of reduced hindrance factors for ΔΚ = 8 E1 transitions is given. |
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