【摘要】：采用偽核素方法,建立了能夠精確快速處理干涉效應(yīng)的計算方法,在分析廣義等價理論特點的基礎(chǔ)上,提出了高保真的共振計算方法。該方法首先根據(jù)實際問題的幾何,建立238 U的非均勻共振積分表,基于此核素采用廣義等價理論處理柵元間的互屏效應(yīng),獲得不同位置燃料棒的背景截面,然后根據(jù)背景截面在非均勻截面表中插值建立不同燃料棒的等效柵元,在此柵元的基礎(chǔ)上根據(jù)實際問題中燃料棒內(nèi)的溫度分布和核素分布進行超細群計算,從而獲得燃料棒內(nèi)不同位置共振核素高保真的有效共振截面。
[Abstract]:Based on the analysis of the characteristics of generalized equivalence theory, a high fidelity resonance calculation method is proposed by using pseudonuclide method to calculate the interference effect accurately and quickly. Firstly, according to the geometry of practical problems, a non-uniform resonance integral table of 238 U is established. Based on the generalized equivalence theory, the cross-section of fuel rods with different positions is obtained by using the generalized equivalence theory to deal with the cross-screen effect between grid elements. Then the equivalent grid elements of different fuel rods are established by interpolation in the non-uniform cross-section table according to the background section. Based on the grid element, the ultrafine group calculation is carried out according to the temperature distribution and nuclide distribution in the fuel rod in the actual problem. The effective resonance cross section of the high fidelity resonance nuclide at different positions in the fuel rod is obtained.
【作者單位】： 西安交通大學核科學與技術(shù)學院;
【基金】：國家自然科學基金項目(11605128) 中國博士后基金項目(2015M580854)
【分類號】：TL329.2

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1 張乾;吳宏春;曹良志;鄭友琦;;等價理論的偏差分析與改進研究[J];原子能科學技術(shù);2013年S2期

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