中子核反应截面实验数据的参数化理论分析
METHOD OF LEAST SQUARES ANALYSIS FOR MULTI-VARIABLES WITH UNCERTAINTIES
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摘要: 根据蒸发模型和激子模型，在一定的假设和近似下建立了（ｎ，２ｎ），（ｎ，３ｎ），（ｎ，ｘ）（ｘ＝ｐ，ａ，ｄ，ｔ，￣３Ｈｅ），（ｎ，ｎｐ＋ｐｎ），（ｎ，ｎａ＋ａｎ）．及（ｎ，γ）等十个反应道的中子核反应截面的参数化理论公式。公式中仅含最灵敏的参数，根据所建立的参数化理论公式，编制了参数化理论公式拟合分析程序ＳＦＦ。与实验数据的比较表明：参数化的理论公式可以很好地描述实验数据。
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[1] PARAMETERIZED THEORY ANALYSISOF THE EXPERIMENTAL DATAOF NEUTRON REACTION CROSS SECTIONSLIU TONG；ZHANGJIN；ZHAOZHIXIANG(China Institute of. Atomic Energy, P. O. Box 275(41), Beijing, 102413)ABSTRACTBased on the evaporation model and exciton model, under some assumptions andapproximations, parameterized model theory forniulas of excitation functions for ten reactions, in-cluding ( n,2n ), ( n, 3n ), ( n, x ), ( x = p, a, d, t, ~3He ), ( n, np + pn), ( n, na + an ) and ( n, γ), areestablished. Only the most sensitive parameters are included in the formulas. According to theseformulas, a code SFF to analyse the measured data are developed. The comparison of the resultswith the experimenlal data demonstrates that the parameterized formulae can describe the experi-mental data very well. Keywords Parameterized formulae Evaporation model Exciton model Least-squaresfitting
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