【作者】 夏辉； 李富石； 陈智全； 黄生祥； 李宏建；

【Author】 Xia Hui Li Fu-shi Chen Zhi-quan Huang Sheng-xiang Li Hong-jian(School of Physics Science and Technology,Central South University,Changsha,410083,China)

【机构】 中南大学物理科学与技术学院；

【摘要】 利用低相干动态光散射法测量不同浓度悬浮液中的颗粒粒径分布。由低相干光源和迈克尔逊干涉仪,结合传统的动态光散射技术组成低相干动态光散射装置,通过检测背散射单次散乱光的光场强度的自相关函数,利用CONTIN算法得到不同浓度悬浮液中颗粒的粒径分布。结果表明,对于在1%～10%体积浓度范围内的单分散悬浮液样品,测量得到的颗粒粒径精确度在4%以内。更多还原

【Abstract】 A low-coherence dynamic light scattering method was used to measure the particle size distribution of colloidal suspensions with different volume fraction.The experimental setup consists of the combination of the low-coherence Michelson interferometer and the traditional dynamic light scattering technology.By detecting the variation of the ampli- tude autocorrelation function of the singly backscattered light from the sample,the CONTIN algorithm was used to obtain the particle radius distributions.As a result,in the range of volume fraction(?)from 1% to 10%,the particle size distribu- tions with the accuracy approximately 4% can be obtained.更多还原