论文部分内容阅读
文章介绍了用质谱计测量反应堆元件的燃耗的基本方法,铀同位素比值法和燃耗监测核素~(148)Nd含量测定法的测量误差分别是(3.0—4.0)％和(1.6—2.0)％。用质谱法获得的燃耗值与用γ谱法和放化法获得的燃耗值是一致的。 文章给出了铀同位素比值、α_5值和燃耗值沿反应堆元件轴向的分布曲线,铀同位素比值与燃耗值的关系曲线。铀同位素比值和燃耗值的关系曲线是线性的,它与裂变生成的毒物核素~(149)Sm同燃耗的关系曲线是一致的。
In this paper, the basic method for measuring the fuel consumption of reactor components by mass spectrometry is introduced. The measurement errors of the uranium isotope ratio method and the fuel consumption monitoring radionuclide ~ (148) Nd determination method are (3.0-4.0)% and (1.6-2.0 )%. The burnup values obtained by mass spectrometry are consistent with the burnup values obtained by gamma spectrometry and radiochemical methods. The article gives the uranium isotope ratio, α_5 value and fuel consumption along the axis of the reactor distribution curve, uranium isotope ratio and fuel consumption curve. The relationship between the uranium isotope ratio and the burnup value is linear, which is in agreement with the fission-produced poisoning nuclide ~ (149) Sm.