【摘要】 从裂变产物的衰变规律出发,导出了利用 HPGe γ谱仪测量的裂变产物γ峰计数计算裂变产物零时刻总核数的公式。利用该公式计算了²³⁹Pu 裂变产生的气体裂变产物⁸⁵Kr^m、⁸⁷Kr、⁸⁸Kr、¹³³Xe^m、¹³³Xe、¹³⁵Xe^m、¹³⁵Xe和¹³⁸Xe的核数目随时间的变化关系,并计算了距相对效率为 60％的 HPGe 探测器表面 25 cm处各气体裂变产物γ峰计数率变化,为气体裂变产物的实验分析提供了参考。更多还原

【Abstract】 On the basis of the decay law of fission products and the γ peak counts mea-sured by HPGe detector, the formula of calculating the total numbers of fission productsat zero time was deduced. Taking binary fission of ²³⁹Pu as an example, the numbers ofgas fission products ⁸⁵Kr^m, ⁸⁷Kr,⁸⁸Kr, ¹³³Xe^m, ¹³³Xe,¹³⁵Xe^m, ¹³⁵Xe and ¹³⁸Xe as a func-tion of decay time were calculated, and the gamma ray count rates at the distance of 25cm from a HPGe detector with the detection efficiency of 60% were evaluated.更多还原