Abstract

Helium, created by radioactive decay of dissolved tritium, forms a low concentration of equilibrium bubbles in α-titanium during soaking in low-pressure tritium gas at 600 °C. On cooling to room temperature, excess tritium is precipitated as δ-tritide phase, and a high density of small helium bubbles is produced within the tritide phase. During aging for up to ~1000 days at room temperature, the bubbles in the tritide phase grow linearly with t 1 3 as helium continues to be generated. Evidence is seen for channel formation by bubble linkage in the tritide phase.

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