Study of the Characteristics of Dust Acoustic Solitary Waves and Dust Acoustic Shock Waves in Electron Free Dusty Space Plasma

• 作者: Raicharan Denra Samit Paul Susmita Sarkar
• 来源期刊: 现代物理(英文)
• 学科: 数学
• 关键词: DUST ACOUSTIC SOLITON DUST ACOUSTIC Shock KAPPA Distribution DUSTY Space Plasma Positive DUST CHARGE
• 年，卷（期）: 2018,（5）
• 页码范围: 948-960
• 页数: 13页
• 分类号: O1

摘要

A theoretical investigation has been done for the study of dust acoustic solitary waves and dust acoustic shock waves propagating in an unmagnetized, collisionless Lorentzian dusty plasma considering adiabatic and non-adiabatic dust charge variation. Plasma under consideration is composed of inertialess Lorentzian positive and negative ions along with inertial positively charged dust grains. Such dust grains are charged by the flow of positive ion and negative ion current over the grain surface. Adiabatic grain charge variation shows the existence of compressive soliton whose amplitude decreases and width increases with increasing number of suprathermal particles. Non-adiabatic dust charge variation is concerned with the propagation of monotonic dust acoustic shock waves which do not loose monotonicity even when a number of suprathermal particles are very large.