Studies of fundamental properties of rutherfordium (Element 104) using organic complexing agents

Czerwinski, Kenneth R.

doi:10.2172/10158040

Cited by 7 publications

(12 citation statements)

References 23 publications

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“…The production of 261 Rf was performed using the 248 Cm( 18 O s+ ,5n) reaction at the LBL 88-Inch Cyclotron and is explained in detail elsewhere [14,15].…”

Section: Rf Productionmentioning

confidence: 99%

“…The K d is the concentration of the metal in the organic phase divided by the metal concentration in the aqueous phase. The methods used to detect the radioactive decay of the tracers isotopes are described elsewhere [14,15].…”

Section: Radiation Detectionmentioning

confidence: 99%

“…Benzene was used as the diluent. It was chosen because of its superior results with Zr extraction by TIOA in previous studies [14,15]. In addition, aromatic hydrocarbons have higher extraction coefficients for metal and do not form a third phase as readily as non-aromatic hydrocarbons [19].…”

Section: Zr-95 Nbmentioning

confidence: 99%

“…The handling and chemical procedures used for Rf at the cyclotron collection site are described elsewhere [14,15],…”

Section: Rutherfordium Extractionsmentioning

confidence: 99%

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Solution Chemistry of Element 104: Part II. Liquid-Liquid Extractions with Tributylphosphate

et al. 1994

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Element 104 / Rutherfordium / Liquid-liquid extraction / Transactinide chemistry / KurchatoviumAbstract Liquid-liquid extractions of element 104 (Rf), Zr, Nb, Hf, Th, and Pu(IV) were conducted using tributylphosphate (TBP) in benzene. Initial studies were conducted using 95 Zr and 95 Nb. The effect of TBP, HCl, chloride, and hydrogen ion concentrations on Zr and Nb extraction was examined. Based on the results from these experiments, it was decided to examine Rf extraction into 0.25 M TBP in benzene as a function of HCl, chloride, and hydrogen ion concentrations between 8 and 12 M. Studies of these extraction conditions were carried out using 95 Zr, 169 Hf, 228 Th, 238 Pu, and 26, Rf. The 65-second 261 Rf was produced via the 248 Cm( 18 0,5n) reaction at the 88-Inch Cyclotron at Lawrence Berkeley Laboratory. The results show that extraction for these elements increases or remains high as a function of HCl concentration. However, in the experiments in which the chloride and hydrogen ion were varied, Rf extraction differed from that of the group 4 elements and behaved more like Pu(IV).

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“…The production of 261 Rf was performed using the 248 Cm( 18 O s+ ,5n) reaction at the LBL 88-Inch Cyclotron and is explained in detail elsewhere [14,15].…”

Section: Rf Productionmentioning

confidence: 99%

Section: Radiation Detectionmentioning

confidence: 99%

Section: Zr-95 Nbmentioning

confidence: 99%

“…The handling and chemical procedures used for Rf at the cyclotron collection site are described elsewhere [14,15],…”

Section: Rutherfordium Extractionsmentioning

confidence: 99%

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Solution Chemistry of Element 104: Part II. Liquid-Liquid Extractions with Tributylphosphate

et al. 1994

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“…Recently, Czerwinski et al [22,23] produced 65-sec 261 Rf in 248 Cm( 18 0,5n) reactions at the 88-in. Cyclotron at LBL for examination of the properties of element 104 in a variety of different liquid-liquid extraction systems.…”

Section: Element 104 Rutherfordiummentioning

confidence: 99%