“…Shigeharu UKAI, Takeji KAITO, Satoshi OHTSUKA, Tsuyoshi NARITA, Masayuki FUJIWARA 1) and Toshimi KOBAYASHI 2) O-arai Engineering Center, Japan Nuclear Cycle Development Institute, Narita, O-arai, Ibaraki 311-1393 Japan. 1) Kobelco Research Inc., Kobe, Hyogo 651-2271 Japan.…”