【摘要】 针对脉冲中子氧活化时间谱的解释问题,已有的峰形函数拟合解释模型中的峰形函数众多、解释精度偏低,加权平均解释模型解释精度不高。提出了一种间接的谱峰选取方法,并给出了一个新的渡越时间解释模型。首先人工选取背景谱段,然后按照给定的规则确定出多个谱峰段,代入建立的渡越时间解释模型,进而计算出体积流量。实测数据的处理结果表明,该解释模型的解释结果受背景谱段的选取方式影响很小,解释精度比已有模型的解释精度高。更多还原

【Abstract】 There are two existing interpretation model for impulse oxygen activation logging data.The first existing interpretation model is based on function fitting method,but it is difficult to choose a suitable functional forms,and the interpretation accuracy is low.The second existing interpretation model is weighted average model,and its interpretation accuracy is low.An indirect method is presented to choose the peak in time spectrum,and a new interpretation model is given to determine transit time.a bit of background time spectrum is choosen by manual firstly,and then,5 peak segments are determined in time spectrum secondly.Lastly,the transit time is calculated based on the new interpretation model to determine the volume flow rate.The results generated from the practical data indicate that the new model is efficient and stable.更多还原