In the field of nuclear arms control,non-proliferation is an significant area,particularly the proliferation of weapon usable nuclear materials,which is concerned by many countries.We used burnup calculating code MCORGS to simulate the relation between the burnup of spent fuel in PWR and Pu isotopic composition.We built the model of pin-cell with 20 average axial zones,calculated its axial burnup distribution,and got the axial burnup and Pu-239 isotopic mass concentration distribution in different axial pos...
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