June 2, 2023
S.Mohammad Motevalli

S.Mohammad Motevalli

Degree: Associate professor
Address: Department of Nuclear Physics, Faculty of Sciences, University of Mazandaran, P. O. Box 47415-416, Babolsar, Iran
Education: Ph.D in Nuclear physics
Phone: 01135302480
Faculty: Faculty of Science


Title Investigation of Ion-Acoustic Solitons in Magnetosphere and Tokamak Warm Plasma with Two-Temperature Electrons
Type Article
Ion-Acoustic - Solitons - Magnetosphere - Tokamak
DOI https://doi.org/10.1134/S1063780X18090027
Researchers noushin Dashtban (First researcher) , S.Mohammad Motevalli (Second researcher) , Taghi Mohsenpour (Third researcher)


The properties of oblique propagation of small amplitude ion-acoustic soliton are investigated in a plasma containing weakly relativistic ions and two-temperature electrons (cold and hot electrons). The reductive perturbation method is used to derive the Korteweg−de Vries equation for the present plasma model. It is found that the parameters determining the nature of soliton are different for compressive or rarefactive structures. Moreover, the effects of weakly relativistic ions, the temperature ratio, and the density ratio of hot-to-cold electron species on soliton characters are studied. The theory is applied on the case of relativistic ions observed in the magnetosphere and in the case of nonrelativistic ions observed in tokamaks.