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Mass-spectrometric study of PuCd$$_{2}$$

PuCd$$_{2}$$の質量分析的研究

中島 邦久; 荒井 康夫; 山下 利之

Nakajima, Kunihisa; Arai, Yasuo; Yamashita, Toshiyuki

PuCd$$_{2}$$金属間化合物は、金属PuとCdを約950Kで加熱することで調製した。X線回折測定によってPuCd$$_{2}$$はCdI$$_{2}$$型であることがわかった。質量分析測定は650-770Kの温度範囲で行った。この温度領域においてPuCd$$_{2}$$+Pu上のCd蒸気圧は、Cd上の蒸気圧よりも3-5桁低くなった。また、これらの蒸気圧からPuCd$$_{2}$$の生成自由エネルギーを評価した。

PuCd$$_{2}$$ intermetallic compound was prepared by heating pure Pu and Cd metals at about 950K. PuCd$$_{2}$$ was found to be a prototype of CdI$$_{2}$$ by means of powder X-ray diffractometry. Mass-spectrometric experiment was performed in the temperature range of 650-770K. It was found that the vapor pressures of Cd over PuCd$$_{2}$$+Pu were three to five orders of magnitude lower than those over Cd in this temperature range. From these vapor pressures, Gibbs free energy of formation of PuCd$$_{2}$$ was evaluated.

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パーセンタイル:86.53

分野:Chemistry, Multidisciplinary

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