在超细微晶和非磁性非晶材料的穆斯堡尔研究中,由于样品中每个原子核所处的环境是不相同的,因此,表现的四极分裂双线实际上是一系列重迭谱线的包络,即存在谱线的表观加宽。对于加宽穆斯堡尔谱的计算,原则上应根据电场梯度分布来进行计算。但是对于加宽并不太多的情况,事实上国内外不少作者仍然采用最小二乘法按洛伦兹线型拟合。显然,这样的拟合会使拟合优度x~2增加。 In the Mössbauer study of ultrafine-crystalline and non-magnetic amorphous materials, the quadrupole dipole represented is actually a series of overlaps because each nucleus in the sample is in a different environment The envelope of the line, that is, the apparent widening of the line. The calculations for widening the Mössbauer spectrum should in principle be based on the electric field gradient distribution. However, for the case of broadening is not too much, in fact, many authors at home and abroad still use LLS to fit Lorentz line type. Obviously, such a fit will make the goodness of fit x ~ 2 increase.