Abstract
An ‘atmosphere controllable high temperature mass spectrometer’ was developed in order to investigate the effect of D 2 and/or D 2O on vaporization behavior of ceramic breeder blanket materials. The measurements were made on Li 4SiO 4, LiAlO 2 and Li 2TiO 3. The enhancement of Li vaporization and the formation of LiOD caused by D 2 and D 2O introduction, respectively, were confirmed quantitatively. From the resulting thermodynamic data, an discussion on Li loss from the breeder ceramic materials was made. The maximum allowable temperature with respect to lithium transport through the sweep gas in fusion reactor blanket was estimated.
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