本文關(guān)鍵詞： 核天體物理反應(yīng)率 擬合方法 相對離差　出處：《原子能科學(xué)技術(shù)》2015年11期 　論文類型：期刊論文

【摘要】：為進(jìn)行大規(guī)模核天體網(wǎng)絡(luò)運算,通常將核天體物理反應(yīng)率擬合為與溫度相關(guān)的數(shù)值表達(dá)式,以簡化程序中的核物理輸入量。通過分析國際上常用的幾種核天體物理數(shù)據(jù)庫,本工作得到了一種新的擬合方法,其對反應(yīng)率的擬合精度較目前國際上通用的REACLIB和NACRE數(shù)據(jù)庫的擬合方法的有明顯改善。該擬合方法適用于直接反應(yīng)和窄共振、寬共振、閾下共振和多諧共振反應(yīng),方便建立核天體物理反應(yīng)率數(shù)據(jù)庫。
[Abstract]:In order to perform large-scale nuclear astrophysical network operation, the nuclear astrophysical reaction rate is usually fitted to a numerical expression related to temperature, in order to simplify the nuclear physical input in the program. By analyzing several kinds of nuclear astrophysical databases commonly used in the world, In this work, a new fitting method is obtained, and the fitting accuracy of the reaction rate is obviously improved compared with that of REACLIB and NACRE databases, which are widely used in the world. This fitting method is suitable for direct reaction, narrow resonance and wide resonance. Subliminal resonance and multiharmonic resonance facilitate the establishment of a database of nuclear astrophysical reactivity.
【作者單位】： 中國原子能科學(xué)研究院核物理研究所;南京航空航天大學(xué)材料科學(xué)與技術(shù)學(xué)院;
【分類號】：P144

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