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Sudden change in the nuclear charge distribution of very light gold isotopes

AuthorsWallmeroth, K.; Bollen, G.; Dohn, A.; Egelhof, P.; Grüner, J.; Lindenlauf, F.; Krönert, U.; Campos, J.; Rodríguez Yunta, A.; García Borge, María José ; Venugopalan, A.; Wood, J. L.; Moore, R. B.; Kluge, H.-J.
Keywords[PACS] Charge distribution
[PACS] Electromagnetic moments
[PACS] Properties of specific nuclei listed by mass ranges:150 ≤ A ≤ 189
Issue Date13-Apr-1987
PublisherAmerican Physical Society
CitationPhysical Review Letters 58(15): 1516-1519 (1987)
AbstractOn-line resonance-ionization mass spectrometry has been applied to determine the isotope shift and hyperfine structure of 185-189Au and 189mAu in the 6s 2S(1/2)→6p 2p 1/2 (λ=268 nm) transition. The Au atoms were obtained as daughters of mass-separated Hg isotopes produced at the ISOLDE facility at CERN ionized by a three-color, two-step resonant photoionization process, detected and mass-selected by time of flight. A drastic change of the nuclear charge radius was observed between 187Au and 186Au, which is interpreted as an onset of strong deformation of β≈0.25 in 186Au and 185Au.
Description4 pages, 3 tables, 2 figures.-- PACS nrs.: 21.10.Ft, 21.10.Ky, 27.70.+q.
Publisher version (URL)http://link.aps.org/doi/10.1103/PhysRevLett.58.1516
Appears in Collections:(CFMAC-IEM) Artículos
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