1. Vitrification Technology Development Department, Japan Atomic Energy Agency, Ibaraki, Japan
2. Radioactive Waste Treatment and Disposal Technology Group, International Research Institute for Nuclear Decommissioning, Tokyo, Japan
3. Material Science and Engineering Course, The Graduate School of Science and Engineering, Ehime University, Matsuyama, Japan
4. Glass Research Center, Central Glass Co. Ltd., Matsusaka, Japan
5. 3rd Technical Department, Research Center of Computational Mechanics, Inc., Tokyo, Japan
6. GTT-Technologies, Herzogenrath, Germany