DETERMINATION OF DIFFUSION COEFFICIENTS OF ~(237)Np IN BENTONITE[J]. Journal of Nuclear and Radiochemistry, 2003, 25(4): 199-199.
    Citation: DETERMINATION OF DIFFUSION COEFFICIENTS OF ~(237)Np IN BENTONITE[J]. Journal of Nuclear and Radiochemistry, 2003, 25(4): 199-199.

    DETERMINATION OF DIFFUSION COEFFICIENTS OF ~(237)Np IN BENTONITE

    • The research is to determine diffusion coefficients of))~237)Np in three kinds of bentonite under atmosphere and anoxic atmosphere by back-to-back method. Da values determined by back-to-back way as follows:the mixed bentonite is 3.9×10~-13) m~2/s, Mg-bentonite 8.4×10~-13) m~2/s,Ca-bentonite 5.6×10~-13)m~2/s,respectively;and corresponding Da values under anoxic atmosphere:3.4×10~-13) m~2/s,3.1×10~-13) m~2/s and 4.7×10~-13) m~2/s. On the other hand,the Da value of))~237)Np on mixed bentonite is determined by flow experiment,and the result is Da=8.2×10~-12) m~2/s.
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