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Alpha-$$gamma$$ decay studies of $$^{253}$$No and its daughter products $$^{253}$$Md, $$^{249}$$Fm

$$^{253}$$No及び娘核種$$^{253}$$Md, $$^{249}$$Fmの$$alpha$$-$$gamma$$核分光

He${ss}$berger, F. P.*; Antalic, S.*; Ackermann, D.*; Kalaninov$'a$, Z.*; Heinz, S.*; Hofmann, S.*; Streicher, B.*; Kindler, B.*; Kojouharov, I.*; Kuusiniemi, P.*; Leino, M.*; Lommel, B.*; Mann, R.*; 西尾 勝久   ; $v{S}$$'a$ro, $v{S}$.*; Sulignano, B.*; Venhart, M.*

He${ss}$berger, F. P.*; Antalic, S.*; Ackermann, D.*; Kalaninov$'a$, Z.*; Heinz, S.*; Hofmann, S.*; Streicher, B.*; Kindler, B.*; Kojouharov, I.*; Kuusiniemi, P.*; Leino, M.*; Lommel, B.*; Mann, R.*; Nishio, Katsuhisa; $v{S}$$'a$ro, $v{S}$.*; Sulignano, B.*; Venhart, M.*

Nuclear structure and decay of the isotope $$^{253}$$No and its decay products $$^{249}$$Fm and $$^{253}$$Md were investigated by means of $$alpha$$-$$gamma$$ spectroscopy. Besides the established strong $$alpha$$ transitions from the 9/2$$^{-}$$[734] Nilsson level in $$^{249}$$Fm, populated predominantly by the $$alpha$$ decay of $$^{253}$$No, into the ground-state(gs) rotational band, a couple of weaker $$alpha$$ lines were observed and placed into the $$^{249}$$Fm level scheme. The transition from the 7/2$$^{-}$$ level in $$^{249}$$Es, populated by the $$alpha$$ decay of $$^{253}$$Md, into the 9/2$$^{+}$$ member of the gs rotational band, so far established for other odd-mass Es isotopes, was observed clearly. The GEANT4 simulations were performed to investigate the influence of energy summing between $$alpha$$ particles and conversion electrons (CE) on the shape of the $$alpha$$ spectra at different implantation energies, leading to evidence for a weak $$alpha$$ decay branch of $$^{253}$$No into the gs of $$^{249}$$Fm or the ground-state rotational band, respectively.

発表言語

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English

掲載資料名

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European Physical Journal A

巻

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48

号

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5

ページ数

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p.75_1 - 75_9

発行年月

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2012/05

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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no keyword

特許データ

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PDF

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論文URL

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https://doi.org/10.1140/epja/i2012-12075-8

研究データの公開先DOI

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本成果にかかわる研究データのリンクです。

使用施設

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広報プレスリリース

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論文解説記事
(成果普及情報誌)

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受委託・共同研究相手機関

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Access

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- Accesses

InCites™

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パーセンタイル：76.80

分野：Physics, Nuclear

Altmetrics

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