Institution: | (1) Tritium Engineering Laboratory, Department of Fusion Engineering Research, Japan Atomic Energy Research Institute (JAERI), Tokai, Ibaraki 319-1195, Japan;(2) Department of Radiation Research for Environment and Resources, Takasaki Radiation Chemistry Research Institute, JAERI, Takasaki, Gunma 370-1292, Japan;(3) Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-0198, Japan;(4) Meson Science Laboratory, Institute of Material Structure Science, High Energy Accelerator Research Organization (KEK-MSL), Oho, Tsukuba, Ibaraki 305-0801, Japan |