Fluoride complexation of rutherfordium (Rf, element 104)
نویسندگان
چکیده
منابع مشابه
Fluoride Complexation of Rutherfordium (Rf, Element 104)
The distribution coefficient (Kd) of Rf on ion exchange resins at various HNO3/HF concentrations had been studied [1]. Rf was eluted at higher HF concentrations from CIX than Zr and Hf and rather resembled Th. Up to 1 M HF, Rf was not retained on the AIX also resembling its pseudo-homolog Th. Th is known to form no anionic fluoride complexes, while Zr and Hf are forming complexes of the type [M...
متن کاملTheoretical Treatment of Fluoride Complexation of Element 104 in HF Solutions
Recent experiments on fluoride complexation of element 104, Rf, in aqueous HF/HNO3 solutions [1,2] have demonstrated an unexpected behaviour of Rf in comparison with that of Zr and Hf: Whereas all the elements are retained as cations on cation exchange resins (CIX) below 10 HF, no rise of the Kd value of Rf is observed up to 1M HF in contrast to Zr and Hf when sorbed by anion exchange resins (A...
متن کاملRadiochemical Studies of the Transactinide Element, Rutherfordium (Rf) at JAERI
Radiochemical studies of element 104, rutherfordium (Rf), at JAAERI (Japan Atomic Energy Research Institute) are reviewed. The transactinide nuclide 261Rf has been successfully produced in the reaction 248Cm(18O, 5n) at the JAERI tandem accelerator. The excitation function of the reaction has been measured with a rotating wheel catcher apparatus and the maximum production cross section has been...
متن کاملTheoretical Predictions of Hydrolysis and Complex Formation of Element 104, Rf, in HF and HCl Solutions
The accumulated results on the extraction behaviour of element 104, Rf, from HF and HCl solutions have revealed quite a number of surprises and disagreements between separate measurements (for a review, see ref. [1]). Another open question was that of hydrolysis of Rf, where two types of experiments [2,3] revealed different trends for Zr, Hf and Rf. To clear those points, our theoretical resear...
متن کاملKd-Value Determination for Rf (Element 104) with the Multi-Column Technique
After online experiments with Hf (t1/2 = 76 s, decaying into Lu) at GSI [1] we performed two experiments with the multi-column-technique [2] with Rutherfordium. Rf was produced in the Cm(O, 5n) reaction at the PSI Philips Cyclotron. A 730 μg/cm Cm target was bombarded with a 0.5 μApart O beam. The KCl aerosols transporting the activities was continuously dissolved in a degasser with a yield > 8...
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ژورنال
عنوان ژورنال: Radiochimica Acta
سال: 2000
ISSN: 2193-3405,0033-8230
DOI: 10.1524/ract.2000.88.5.265