Laser-assisted nuclear decay spectroscopy of 176,177,179Au

R.D. Harding, Andrei N. Andreyev, Anatoly (A.E.) Barzakh, Cubiss James G., Piet Van Duppen, Numa A. Althubiti, Boris Andel, Stanislav Antalic, Thomas Elias Cocolios, Thomas Day Goodacre, Kristof Dockx, Gregory James Farooq-Smith, Dmitry V. Fedorov, Valentin N. Fedosseev, Daniel A. Fink, Liam Paul Gaffney, Lars Ghys

Research outputpeer-review


A study of the laser-ionized and mass-separated neutron-deficient isotopes 176,177,179Au was performed using the Resonance Ionization Laser Ion Source and the Windmill detection setup at ISOLDE, CERN. New and improved data on complex fine-structure α decays of the three isotopes were deduced, providing insight into the low-lying levels in the daughter nuclei 172,173,175Ir. New information on the properties of β-decay daughter products 177,179Pt was also obtained. From the first in-source laser spectroscopy measurements of the hyperfine structure in the atomic 267.6-nm transition of 176Au, the nuclear magnetic moments for both high- and low-spin α-decaying states were deduced. Together with the values determined from the additivity relations, they were used to propose the most probable spins and configurations for both states. The α-decay branching ratios were determined as bα (176Auls ) = 58(5)% and bα (176Auhs ) = 29(5)%.
Original languageEnglish
Article number024326
Pages (from-to)1-16
Number of pages16
JournalPhysical Review C
StatePublished - 23 Aug 2021

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