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  Laser-assisted decay spectroscopy for the ground states of 180,182Au

Harding, R. D., Andreyev, A. N., Barzakh, A. E., Atanasov, D., Cubiss, J. G., Van Duppen, P. V., et al. (2020). Laser-assisted decay spectroscopy for the ground states of 180,182Au. Physical Review C, 102(2): 024312. doi:10.1103/PhysRevC.102.024312.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-D777-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D77D-C
Genre: Journal Article

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 Creators:
Harding, R. D., Author
Andreyev, A. N., Author
Barzakh, A. E., Author
Atanasov, D.1, Author              
Cubiss, J. G., Author
Van Duppen, P. Van, Author
Monthery, M. Al, Author
Althubiti, N. A., Author
Andel, B., Author
Antalic, S., Author
Blaum, K.1, Author              
Cocolios, T. E., Author
Day Goodacre, T. , Author
de Roubin, A.1, Author              
Farooq-Smith, G. J., Author
Fedorov, D. V., Author
Fedosseev, V. N., Author
Fink, D.1, Author              
Gaffney, L. P., Author
Ghys, L., Author
Joss, D. T., AuthorHerfurth, F., AuthorHuyse, M., AuthorImai, N., AuthorKreim, S.1, Author              Lunney, D., AuthorLynch, K. M., AuthorManea, V.1, Author              Marsh, B. A., AuthorMartinez Palenzuela, Y. , AuthorMolkanov, P. L., AuthorNeidherr, D., AuthorPage, R. D., AuthorPastore, A., AuthorRosenbusch, M., AuthorRossel, R. E., AuthorRothe, S., AuthorSchweikhard, L., AuthorSeliverstov, M. D., AuthorSels, S., AuthorVan Beveren, C. V, AuthorVerstraelen, E., AuthorWelker, A., AuthorWienholtz, F., AuthorWolf, R. N.1, Author              Zuber, K., Author more..
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              

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 MPINP: Präzisionsexperimente - Abteilung Blaum
 Abstract: A study of the ground states of the laser-ionized and mass-separated odd-odd isotopes 180,182Au was performed using the Resonance Ionization Laser Ion Source, Windmill detection setup and ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer at ISOLDE, CERN. A complex fine-structure α-decay pattern of 180Au was deduced, providing insight into the low-lying levels in the daughter nucleus 176Ir. An α-decay branching ratio of bα(180Au)=0.58(10)% and a half-life of T1/2=7.2(5) s have also been derived, allowing for the calculation of the reduced α-decay widths and determining the degree of hindrance of respective α-decay branches. From complementary first in-source laser spectroscopy measurements of the hyperfine structure in atomic transitions of 180,182Au, the nuclear magnetic moments of μ(180Au)=−0.83(9)μN and μ(182Au)=1.66(9)μN were extracted with an inclusion of a correction for the hyperfine anomaly. Based on the observed hyperfine structure patterns, and on the comparison of the measured and calculated μ values, a preferred ground-state spin and parity Iπ(180Augs)=(1+) is proposed, and the earlier assignment of Iπ(182Augs)=(2+) is confirmed. For 180Au, the most probable proton-neutron Nilsson configuration of π3/2−[532]⊗ν5/2−[512] suggests the same proton state as in the heavier deformed odd-odd nuclei 182,184Au.

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 Dates: 2020-08-11
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevC.102.024312
 Degree: -

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Title: Physical Review C
  Other : Phys. Rev. C
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 102 (2) Sequence Number: 024312 Start / End Page: - Identifier: ISSN: 0556-2813
CoNE: https://pure.mpg.de/cone/journals/resource/954925225009