1. Commissariat à l’Energie Atomique, Cadarache, F-13108 Saint Paul lez Durance, France
2. Commissariat à l’Energie Atomique, Saclay, F-91191 Gif sur Yvette, France
3. Kinki University, Higashi-Osaka 577-8502, Japan
4. Brookhaven National Laboratory, Upton, New York 11973-5000
5. European Commission—Joint Research Centre—Institute for Reference Materials and Measurements (EC-JRC-IRMM), B-2440 Geel, Belgium