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本文研究了快中子脉冲反应堆大厅内空气中裂变产物的污染问题。通过对ＣＦＢＲ－Ⅱ快中子脉冲反应堆爆发额定产额脉冲（１．５３×１０１６裂变）后，厅内气溶胶的取样和γ谱分析，确定了裂变产物从黄铜壳内空气中释放到厅内空气中形成气溶胶的释放份额为５×１０－３。利用此释放份额计算了厅内空气中不同放射性核素的气溶胶浓度；还计算了该堆爆发额定产额脉冲后不同冷却时间ｔ厅内空气中无分凝混合裂变产物的导出空气浓度ＤＡＣ（ｔ）值，为该堆辐射安全分析和现场辐射防护提供了依据。
This article studies the fission products fouling in the air in fast neutron impulse reactor hall. After the burst of rated output pulse (1.53 × 1016 fission) of CFBR-Ⅱ fast neutron pulse reactor, the sampling and the γ-ray analysis of aerosol inside the hall, it was confirmed that the fission products were released from the air inside the brass shell to the hall The release of aerosol in the air is 5 x 10-3. The aerosol concentration of different radionuclides in the air in the hall was calculated by using this release share. The derived air concentration of mixed fission products without air-core in the air at different cooling time t after the burst of rated output pulse was also calculated. t) value for the reactor radiation safety analysis and on-site radiation protection provided the basis.