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$$alpha$$-$$gamma$$ spectroscopy of superheavy nuclei

Asai, Masato  

$$alpha$$-$$gamma$$ spectroscopy of superheavy nuclei have been performed at JAEA tandem accelerator. The nuclei $$^{255}$$No, $$^{257}$$No, $$^{259}$$No, and $$^{261}$$Rf were produced by the cold-fusion reactions with a $$^{248}$$Cm target, and were transported with a gas-jet transport technique to a rotating wheel $$alpha$$-$$gamma$$ detection system, where $$gamma$$ rays associated with the $$alpha$$ decays of these nuclei were observed. Energies, spin-parities, and neutron configurations of the ground- as well as excited states in these nuclei have been successfully identified. These results suggest that the order of neutron orbitals should be inverted between the neutron number 152 and 162. The cause of this inversion is discussed through the comparison with theoretical calculations.

Language

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Japanese

Journal

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Meeting title

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日本物理学会2008年秋季大会(素粒子,核物理,宇宙線・宇宙物理)

Held date

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2008/09

Location (city)

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山形

Location (country)

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日本

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DOI for research data

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Keywords

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no keyword

Research Facility

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タンデム加速器  

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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