高こう速そく中ちゅう性せい子し

noun

fast neutron

Technical term in nuclear physics for a neutron with kinetic energy above a certain threshold, typically around 1 MeV.

• 高こう速そく中ちゅう性せい子しは原げん子し炉ろの設せっ計けいで重じゅう要ような役やく割わりを