Envelope solitary waves and their reflection and transmission due to impurities in a granular material  

作　　者：杜文青 孙建安 杨阳阳 段文山 

机构地区：[1]College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of NWNU & IMP CAS,Northwest Normal University [2]Institute of Modern Physics, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2018年第1期402-407,共6页中国物理B（英文版）

基　　金：Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA01020304);the National Natural Science Foundation of China(Grant Nos.91026005,11547304,11275156,11047010,and 61162017)

摘　　要：A nonlinear Schrodinger equation in one-dimensional bead chain is first obtained and an envelope solitary wave of the system is verified numerically in this system. The reflection and the transmission of an incident envelope solitary wave due to impurities has also been investigated. It is found that the magnitudes of both the reflection and the transmission not only depend on the characters of impurity materials, the wave number, the incident wave amplitude, but also on the impurity number. This can be used to detect the character and the number of the impurity materials in the bead chain by measuring the reflection and the transmission of an incident pulse.A nonlinear Schrodinger equation in one-dimensional bead chain is first obtained and an envelope solitary wave of the system is verified numerically in this system. The reflection and the transmission of an incident envelope solitary wave due to impurities has also been investigated. It is found that the magnitudes of both the reflection and the transmission not only depend on the characters of impurity materials, the wave number, the incident wave amplitude, but also on the impurity number. This can be used to detect the character and the number of the impurity materials in the bead chain by measuring the reflection and the transmission of an incident pulse.

关 键 词：IMPURITIES envelope solitary wave numerical simulation 

分 类 号：O4[理学—物理]