High-precision measurements of nuclear data with beam DT-neutrons

For about last 10 years the author's group of Osaka University has carried out development of new experimental techniques to measure high-precision nuclear data for the fusion reactor under the collaboration with the FNS group of JAEA. This could be realized using a pencil-beam DT neutron source implemented in the FNS facility. Up to now the author's group measured charged-particle emission double differential cross sections for beryllium, carbon and fluorine, and lithium under measurement, and angle correlated neutron spectrum of (n,2n) reaction for beryllium and zirconium. In the present report, summarized descriptions of the measuring techniques, measured results and future plans and perspectives are given. (author)