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1. (WO2017187730) LONG-LIVED FISSION PRODUCT PROCESSING METHOD USING NEUTRONS

Pub. No.:    WO/2017/187730    International Application No.:    PCT/JP2017/006155
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Tue Feb 21 00:59:59 CET 2017
IPC: G21F 9/00
G21K 5/02
H05H 3/06
H05H 6/00
Applicants: KYOTO UNIVERSITY
国立大学法人京都大学
Inventors: MORI Yoshiharu
森 義治
Title: LONG-LIVED FISSION PRODUCT PROCESSING METHOD USING NEUTRONS
Abstract:
The present invention provides a long-lived fission product processing method using neutrons that makes it possible to generate high intensity neutrons using only an accelerator without using a fast reactor or an accelerator-driven reactor and efficiently cause nuclear transmutation in long-lived fission products (LLFPs). In the present invention, high-energy first neutrons that form a beam in a single direction are generated through the breaking up of deuterons or other primary particles including neutrons as a result of the acceleration of the primary particles in an FFAG accelerator 10 under prescribed conditions such that the primary particles collide with a plate-like target 18, and low-energy, diffuse second neutrons are generated through the excitation of nuclei in the plate-like target. A first LLFP 20 is disposed in the travel direction of the first neutron beam and a second LLFP 24 is disposed in the vicinity of the plate-like target 18.