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Decay studies of K isomer in $$^{254}$$No

He${ss}$berger, F. P.*; Antalic, S.*; Sulignano, B.*; Ackermann, D.*; Heinz, S.*; Hofmann, S.*; Kindler, B.*; Khuyagbaatar, J.*; Kojouharov, I.*; Kuusiniemi, P.*; Leino, M.*; Lommel, B.*; Mann, R.*; Nishio, Katsuhisa   ; Popeko, A. G.*; $v{S}$$'a$ro, $v{S}$.*; Streicher, B.*; Uusitalo, J.*; Venhart, M.*; Yeremin, A. V.*

$$gamma$$-rays decay study of two K isomers in $$^{254}$$No was performed. Two new transitions of 778 and 856 keV could be attributed to the decay pattern of $$^{254m1}$$No (T$$_{1/2}$$=275 ms). The population of an excited band built up on this isomer ($$K$$$$^{pi}$$=8$$^{-}$$) by the decay of $$^{252m2}$$No (198 $$mu$$s) could be proven. A spontaneous fission branch of 2.0$$times$$10$$^{-4}$$ was measured for $$^{252m1}$$No, and upper limit of 1.2$$times$$10$$^{-4}$$ was estimated for $$^{252m2}$$No. These values demonstrate the high stability of multi-quasiparticle configuration against spontaneous fission.

Language

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English

Journal

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European Physical Journal A

Volume

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43

Number

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1

Pages

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p.55 - 66

Publication Year/Month

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2010/01

Meeting title

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Held date

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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/10.1140/epja/i2009-10899-9

DOI for research data

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Keywords

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no keyword

Research Facility

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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

InCites™

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Percentile:95.13

Category:Physics, Nuclear

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