Profile

Study in Research Group for Partitioning and Transmutation Cycle

We are conducting the fundamental study to develop a new separation process for uranium, plutonium, minor actinides (neptunium, americium and curium) and fission products for the purpose of establishing scientific basis of future reprocessing and future nuclear fuel cycle.

We are studying basic chemistry of actinide elements and developing a new extractant and a new adsorbent for the separation of actinides and fission products. Based on the results of these studies, we are developing various methods of separation process utilizing the experimental facility where spent fuel, plutonium, minor actinides and various radioisotopes can be used.

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(Explanation of the above figure)
Complex of americium (Am) with N,N,N',N'- tetraoctyldiglycolamide (TODGA) newly developed in our group. Three oxygen atoms in TODGA combine strongly with trivalent americium.

Handbook on Process and Chemistry of Nuclear Fuel Reprocessing

Extractants to Recover the Long-lived Minor Actinides (MA)

Extractants for Separation of Trivalent Minor Actinides from Lanthanides

Radiolysis Study of Extractants and Adsorbents for Separation of Actinides

Research on Advanced-ORIENT Cycle

Separation of heat-generating fission product, Sr and Cs

Simulation of Solvent Extraction Process in Reprocessing