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Experimental identification of spin-parities and single-particle configurations in $$^{257}$$No and its $$alpha$$-decay daughter $$^{253}$$Fm

Asai, Masato  ; Tsukada, Kazuaki  ; Sakama, Minoru*; Ichikawa, Shinichi; Ishii, Tetsuro  ; Nagame, Yuichiro ; Nishinaka, Ichiro; Akiyama, Kazuhiko; Osa, Akihiko  ; Oura, Yasuji*; Sueki, Keisuke*; Shibata, Michihiro*

Excited states in $$^{253}$$Fm fed by the $$alpha$$ decay of $$^{257}$$No have been established through $$alpha$$-$$gamma$$ and $$alpha$$-electron coincidence spectroscopy using a gas-jet transport system and an on-line isotope separator. The spin-parity of the 124.1 keV level in $$^{253}$$Fm has been identified on the basis of the measured internal conversion coefficients. The $$nu 3/2^{+}[622]$$ configuration has been assigned to the ground state of $$^{257}$$No as well as to the 124.1 keV level. It was found that the ground state configuration of $$^{257}$$No is different from that of lighter $$N=155$$ isotones.

Language

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English

Journal

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Physical Review Letters

Volume

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95

Number

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10

Pages

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p.102502_1 - 102502_4

Publication Year/Month

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2005/09

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1103/PhysRevLett.95.102502

DOI for research data

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Keywords

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$$^{257}$$No; $$^{253}$$Fm; $$gamma$$-ray; Internal Conversion Electron; Spin-parity; Gas-jet Transport; Isotope Separator

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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First Identification of Quantum States in Superheavy Nuclei; Nuclear Structure Studies for Superheavy Nuclei through $$alpha$$-$$gamma$$ Spectroscopy[/]

Cooperating Institute

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東京都立大学

Accesses

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- Accesses

InCites™

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Percentile:87.64

Category:Physics, Multidisciplinary

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