First evidence for a new spontaneous fission decay produced in the reaction 30Si + 238U
H. Ikezoe1 - T. Ikuta1 - S. Mitsuoka1 - Y. Nagame1 - I. Nishinaka1 - K. Tsukada1 - T. Ohtsuki2 - T. Kuzumaki2 - J. Lu1,3
1 Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken,
2 Laboratory of Nuclear Science, Tohoku University, Mikamine, Taihaku-ku, Sendai 982, Japan
3 Institute of Modern Physics, Chinese Academy of Sciences, 73000 Lanzhou, China
Received: 13 March 1998 / Revised version: 4 May 1998 Communicated by V. Metag
The first evidence for a new spontaneous fission decay has been observed in the evaporation residues for the reaction 30Si + 238U at the bombarding energy of 158 MeV. The measured half-life is s and the production cross section is pb. The observed spontaneous fission decay is a possible candidate for the spontaneous fission decay of 264Sg or 263Db after the -decay of 263Sg.
23.90.+w Other topics in radioactive decay and in-beam spectroscopy - 25.70.-Z Low and intermediate energy heavy ion reactions - 27.90.+b