【摘要】 报道了人工岩石样品———多孔介质的NMR实验的弛豫时间T1的测量数据及其处理分析方法.文中采用LevenbergMarquardt(LM)拟合技术,对实验数据利用3种不同的模型进行拟合:单指数,双指数和多指数模型拟合,特别是多指数拟合的弛豫时间τ分布曲线.各种方法利用价值函数χ2进行对比,与实验结果进行了比较.更多还原

【Abstract】 The paper reports measurements of T₁ relaxation time and its distribution in porous media. Three models: the single-exponential model, the double-exponential model, and the multi-exponential model （τ-distribution curves） were used to fit the experimental data and compared for their performance. The Levenberg-Marquardt algorithm was used to perform nonlinear regression.更多还原