Sudden change in the nuclear charge distribution of very light gold isotopes.
نویسندگان
چکیده
On-line resonance-ionization mass spectrometry has been applied to determine the isotope shift and hyperfine structure of 185189Au and 189Aum in the 6s 2S 1/ 2 6p 2Pl/2 (A =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 n1ass 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 f3 ~ 0.25 in 186Au and 185Au.
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ورودعنوان ژورنال:
- Physical review letters
دوره 58 15 شماره
صفحات -
تاریخ انتشار 1987