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对加速器驱动洁净核能系统 (ADS)次临界堆内核素的转换进行了研究。研究结果表明 :ADS具有充分利用核资源的可能性。次临界热堆只能工作在 φ <1× 10 14 cm- 2 ·s- 1的中子注量率下 ,快堆则在 φ =10 15～ 10 16cm- 2 ·s- 1下仍可稳定工作 ,且平衡时的易裂变核素 ( 2 33U和2 39Pu)数目与初始装料核素的比值远高于热堆的。ADS中 ,外源中子可有效地将可裂变核素转换成易裂变核素。为加速达到平衡 ,初始装料中加入少量2 33U及2 39Pu是一种可行的选择。
The conversion of accelerator-driven clean nuclear energy system (ADS) subcritical nuclide was studied. The results show that ADS has the possibility of making full use of nuclear resources. The subcritical thermal reactor can only work at the neutron fluence rate of φ <1 × 10 14 cm -2 · s -1, while the fast reactor can still be stable at φ = 10 15 ~ 10 16cm -2 · s -1 Work, and the ratio of the number of fissile nuclides (2 33U and 2 39Pu) at equilibrium to the initial charge nuclides is much higher than that of the thermal reactor. In ADS, exogenous neutrons can effectively convert fissile nuclides into fissile nuclides. To speed up the balance, adding a small amount of 2 33 U and 2 39 Pu to the initial charge is a viable option.