摘要
Acoustic breathing modes of dusty plasmas have been investigated in a cylindrical system with an axial symmetry. The linear wave solution and a 'dispersion' relation were derived. It was found that in an infinite area, the mode is reduced to a 'classical' dust acoustic wave in the region away from the center. If the dusty plasma is confined in a finite region, however, the breathing (or heart-beating) behavior would be found as observed in many experiments.
Acoustic breathing modes of dusty plasmas have been investigated in a cylindrical system with an axial symmetry. The linear wave solution and a 'dispersion' relation were derived. It was found that in an infinite area, the mode is reduced to a 'classical' dust acoustic wave in the region away from the center. If the dusty plasma is confined in a finite region, however, the breathing (or heart-beating) behavior would be found as observed in many experiments.
基金
The project supported by the National Nature Science Foundation of China(No.10175013)andInternational Collaboration Funds(No.10010760807,10160420799)
