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Fine structure in the $$alpha$$ decay of $$^{179}$$Hg and $$^{177}$$Au

$v{S}$pa$v{c}$ek, A.*; Herz$'a$$v{n}$, A.*; Sedl$'a$k, A.*; Venhart, M.*; Andreyev, A. N.; 48 of others*

The $$alpha$$-decay fine structure of $$^{179}$$Hg and $$^{177}$$Au was studied using decay spectroscopy at JYFL, Finland. Heavy-ion fusion reactions ($$^{82}$$Kr + $$^{100}$$Ru and $$^{88}$$Kr + $$^{92}$$Mo) produced the nuclei. A new $$alpha$$-decay with E$$alpha$$ = 6156(10) keV was observed in $$^{179}$$Hg, populating an excited state in $$^{175}$$Pt. The internal conversion coefficient for the transition de-exciting this state was measured. In $$^{177}$$Au, a new $$alpha$$-decay with E$$alpha$$ = 5998(9) keV was observed, populating an excited state in $$^{173}$$Ir. Two de-excitation paths were seen from this state, and a new 215.7(13)~keV transition was observed to depopulate another excited state in $$^{173}$$Ir. The $$alpha$$-decay properties were analyzed using reduced widths and hindrance factors.

Language

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English

Journal

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European Physical Journal A

Volume

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61

Number

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3

Pages

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p.43_1 - 43_9

Publication Year/Month

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2025/03

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Paper URL

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https://doi.org/10.1140/epja/s10050-025-01513-9

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Keywords

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no keyword

Research Facility

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Press Release

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JAEA R&D Navigator

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Accesses

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- Accesses

InCites™

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Percentile:51.17

Category:Physics, Nuclear

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