Ion-acoustic solitons in multispecies spatially inhomogeneous plasmas

Pramana

Tarsem Singh Gill²  Harvinder Kaur¹  Nareshpal Singh Saini1² 

[1] Department of Physics, Khalsa College, Amritsar 143 002, India$$;Department of Physics, Guru Nanak Dev University, Amritsar 143 005, India$$

关键词: Ion-acoustic solitons;    compressive;    multispecies;    electron-positron.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Ion-acoustic solitons are investigated in the spatially inhomogeneous plasma having electrons-positrons and ions. The soliton characteristics are described by Korteweg-de Vries equation which has an additional term. The density and temperature of different species play an important role for the amplitude and width of the solitons. Numerical calculations show only the possibility of compressive solitons. Further, analytical results predict that the peak amplitude of soliton decreases with the decrease of density gradient. Soliton characteristics like peak amplitude and width are substantially different from those based on KdV theory for homogeneous plasmas.

【 授权许可】

Unknown