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Report No.

Vaporization behaviour of Pu-Cd intermetallic compounds

Nakajima, Kunihisa  ; Nakazono, Yoshihisa; Arai, Yasuo

A pyrochemical process for the metallurgical treatment of the spent nuclear fuels contains the Cd-distillation step, where Pu is recovered as a residue. For understanding this Cd-ditillation behavior the samples of PuCd$$_{2}$$+PuCd$$_{4}$$ and PuCd$$_{4}$$+PuCd$$_{6}$$ were prepared and Knudsen-cell mass-spectrometric measurements were carried out to determine the vapour pressures of Cd(g) over these samples. Further,the thermodynamic quantities of PuCd$$_{2}$$ and PuCd$$_{4}$$ were evaluated from these vapour pressures.



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