CAJ | 학술논문

利用活化法对西安脉冲反应堆辐照腔进行了中子能谱测量。对活化片的测量数据进行了分析，发现其中一个反应道的反应率测量值不准确，并以此为切入点展开深入研究，总结出评定实验数据的定性分析方法：在有限次迭代后，通过对各反应道反应率计算值与实验值之比与1的偏离程度判断实验数据的置信度，进行实验数据取舍后再进行解谱。此外，分析了不同初始能谱对解谱结果的影响。结果表明：初始能谱与实际能谱偏差越大，共振区的截面数据对结果的影响越明显。为此，提出了一种判断初始能谱是否合适的方法。
이용활화법대서안맥충반응퇴복조강진행료중자능보측량。대활화편적측량수거진행료분석，발현기중일개반응도적반응솔측량치불준학，병이차위절입점전개심입연구，총결출평정실험수거적정성분석방법：재유한차질대후，통과대각반응도반응솔계산치여실험치지비여1적편리정도판단실험수거적치신도，진행실험수거취사후재진행해보。차외，분석료불동초시능보대해보결과적영향。결과표명：초시능보여실제능보편차월대，공진구적절면수거대결과적영향월명현。위차，제출료일충판단초시능보시부합괄적방법。
Neutron spectrum in irradiation chamber of Xi′an pulsed reactor was measured with activation meth-od.The activity of foils was measured and analyzed.The analysis revealed that one of the measured reaction rates is not accurate.Further investigation was carried out, and then a method of qualitative analysis of the ex-perimental data was summarized:After finite iterations, the reliability of the data can be assessed, according to the departure of the ratio of calculated reaction rate to experimental reaction rate from 1.After the data selec-tion, the spectrum can be unfolded.Furthermore, the influence of different initial spectrum on the results was analyzed.The larger the difference between the initial spectrum and the reality, the more obvious influence of cross section of the resonance range on the results.In view of this, a method is proposed to determine the suita-bility of the initial spectrum.