Effect of intrinsic 239Pu α-radiation on its extraction with a 40% solution of Tri-n-butyl phosphate in formal n2

Autor: G. P. Tkhorzhnitskii, Elena Belova, D. I. Danilin, A. V. Rodin, I. G. Tananaev
Rok vydání: 2013
Předmět:
Zdroj: Radiochemistry. 55:88-90
ISSN: 1608-3288
1066-3622
Popis: In extraction regeneration of spent nuclear fuel, namely, in refining of solutions containing 0.2 M Pu and more, the radiolytic effects caused by intrinsic Pu α-radiation become noticeable. To examine this effect, Pu extraction from an aqueous solution containing 0.21 M Pu(IV) nitrate and 3 M HNO3 with a 40% solution of TBP in bis(octafluoroamyl) formal, CH2[OCH2(CF2)3CF2H]2, was performed without intercycle treatments. As a result, after 2-month contact with aqueous Pu solution, the organic phase got an irradiation dose of 470 kGy. This led to a decrease in the Pu distribution ratio by a factor of 4.1 and in the phase separation rate by a factor of 1.3 and to an increase in the viscosity by 12%; the density varied within 1–3%.
Databáze: OpenAIRE
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