“等离子体物理基础”课程讨论教学实践研究

讨论教学作为教学手段的重要表现形式,其对课程知识的扩展和教学效果的提升都具有积极作用.然而由于讨论教学具有较大的开放性,需要对讨论教学实施方法进行设计和可行性评估.“等离子体物理基础”作为选修课程,部分学生对该课程内容掌握浅显,甚至硬背结论的现象也有发生.为了改善上述情况,需开展课堂讨论教学.该教学实践表明有效的课堂讨论教学能较好地补充课程内容,增加整体教学效果,加强学生们对该课程的认识,同时也锻炼了他们的独立思考和动手能力.     

Propagation of Ion-Acoustic Wave in an Inhomogeneous Dusty Plasma with. Dust Charge Fluctuation

The propagation of dust ion-acoustic wave in an inhomogeneous dusty plasma is studied by taking the dust charge fluctuation and collisions into account. It is shown that the dust charge fluctuation brings a phase shift to the wave. Furthermore, because of the presence of dust charge fluctuation, a new damping term rises, which makes the damping more sharply.