Laser-assisted nuclear decay spectroscopy of $^{176,177,179}$Au

Autor: Harding, R. D., Andreyev, A. N., Barzakh, A. E., Cubiss, J. G., Van Duppen, P., Al Monthery, M., Althubiti, N. A., Andel, B., Antalic, S., Cocolios, T. E., Goodacre, T. Day, Dockx, K., Farooq-Smith, G. J., Fedorov, D. V., Fedosseev, V. N., Fink, D. A., Gaffney, L. P., Ghys, L., Johnson, J. D., Joss, D. T., Huyse, M., Imai, N., Lynch, K. M., Marsh, B. A., Martinez Palenzuela, Y., Molkanov, P. L., O'Neill, G. G., Page, R. D., Rossel, R. E., Rothe, S., Seliverstov, M. D., Sels, S., Van Beveren, C., Verstraelen, E.
Jazyk: angličtina
Rok vydání: 2021
Předmět:
ISSN: 2469-9993
Popis: A study of the laser-ionized and mass-separated neutron-deficient isotopes $^{176,177,179}$Au 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 $^{172,173,175}$Ir. New information on the properties of β-decay daughter products $^{177,179}$Pt 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 $b_{\alpha}$ $\left (^{176}\textrm{Au}^{ls}\right)=58(5)$% and $b_{\alpha}$ $(^{176} \textrm{Au}^{hs})=29(5)$%.
Databáze: OpenAIRE