小角散射中超微颗粒系的粒间相干模型  

STATISTICAL MODEL OF INTERPARTICLE INTERFERENCE FOUNDED BY SMALL ANGLE NEUTRON SCATTERING

作　　者：贺健[1] 杨同华[1] 

机构地区：[1]中国原子能科学研究院核物理研究所

出　　处：《原子能科学技术》1998年第1期31-37,共7页Atomic Energy Science and Technology

基　　金：国家自然科学基金;核工业科学基金

摘　　要：从统计物理的系综理论出发，借助熵和相互作用能概念构造出了超微颗粒系粒间相干的统计模型，避免了对颗粒相位角作复杂计算，并已得到初步实验结果的支持。With the aid of classic statistics theory,especially the concept of ensemble and the particle interaction function, a new statistical model describing the interparticle interference in a nanometer sized particle system is founded to avoid the complicated calculation of phase angle. It is significant that the model gives a quantitative and simple relationship between the interparticle interference and the scattering intensity measured within a strict range of scattering angle,which have been proven by experimental results. The model can also be used to describe the amorphous system.

关 键 词：小角散射 超微颗粒 粒间相干模型 统计模型 

分 类 号：O414.2[理学—理论物理]