Increase of Lifetime of Thallium Zeolite Ion Source for Single-Ended Accelerator

By multiple sintering, we have significantly increased the lifetime of the thallium (Tl) zeolite ion source used in single-ended electrostatic accelerators. The obtained lifetime of a small ion source (6.4 mm in diameter and 10 mm long) was about 4400 µ Ah (70 µ Ah/mm3 for Tl zeolite).