Head-on Collision Between Two Envelope Solitary Waves in a Granular Medium

J. Korean Phys. Soc. 2019; 75: 903~908
Published online December 13, 2019 © 2019 The Korean Physical Society.


1Graduate School of China Academy of Engineering Physics, Beijing 100088, China
2College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of NWNU & IMP CAS,
Northwest Normal University, Lanzhou 730070, China
3Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730070, China
4Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
Correspondence to: Wen-Shan Duan, Xin Jiang
Abstract

Head-on collisions between two envelope solitary waves were investigated. The interesting result is that no phase shift or phase delay is detected after the head-on collision between two envelope solitary waves. At the same time, for the investigated amplitudes of the two envelope solitary wave, we found that the maximum amplitude during their collision is less than the sum of their initial amplitudes, but greater than the amplitude of either envelope solitary wave before collision.

PACS numbers: 45.05.+x, 05.45.-a, 45.70.-n
Keywords: Granular, Envelope solitary wave, Head-on collision, Phase shift, Maximum amplitude


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