| 中子共振参数的联合拟合分析 |
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| 引用本文： | 何锦昌,李冕丰.中子共振参数的联合拟合分析[J].原子能科学技术,1990,24(2):21-28. |
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| 作者姓名： | 何锦昌 李冕丰 |
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| 作者单位： | 中山大学 广州
(何锦昌)，中山大学 广州(李冕丰) |
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| 摘 要： | 文章给出一种对多个观测量进行联合拟合分析以获得中子共振参数的计算方法。这方法易于同时和精密地提取全部中子共振参数。采用复概率积分法计算多卜勒展宽截面;把解析法和蒙特卡罗法结合起来计算多次散射贡献,使得计算较为精确和省时。对~(232)Th的包括透射、俘获面积和自指示比的8个观测量进行联合拟合分析,结果颇为满意。
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| 关 键 词： | 中子 共振 参数 蒙特卡罗法 分析 |
THE COMBINATION FITTING ANALYSIS OF NEUTRON RESONANCE PARAMETERS |
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| HE JINCHANG,LI MIANFENG Zhongshan University,Guangzhou.THE COMBINATION FITTING ANALYSIS OF NEUTRON RESONANCE PARAMETERS[J].Atomic Energy Science and Technology,1990,24(2):21-28. |
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| Authors: | HE JINCHANG LI MIANFENG Zhongshan University Guangzhou |
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| Abstract: | A procedure for combination fitting analysis on various measured quantities toobtain simultaneously and accurately all neutron resonance parameters is given.Doppler broadening cross sections of resonance shape are calculated with complexprobability intergral. In order to obtain more accurated results and to save thetime of calculation, the Montecarlo method together with an analytical method isused in the calculation of the contribution of multiple scattering. A combinationfitting analysis on eight measured quantities of ~(232)Th including transmission area,capture area and self-indication ratio is performed and the results are satisfactory. |
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| Keywords: | Neutron resonance parameters Monte-Carlo method Combination fitting analysis |
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