1. National Laboratory for High Energy Physics, Oho 1-1, Tsukuba, Ibaraki 305
2. Department of Nuclear Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060
3. Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka 560
4. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611
5. Institute for Material Research, Tohoku University, Sendai, Miyagi 980
6. Macromolecular Research Laboratory, Faculty of Engineering, Yamagata University, Yonezawa, Yamagata 992
7. Department of Chemistry, Nagoya Institute of Technology, Nagoya 466
8. ISIS Pulsed Neutron Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, U.K.