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 Positron-Acoustic Solitons with Two Temperature q-Nonextensive Electrons in Plasma
Type Article
Soliton, Positron-acoustic, Plasma, q-nonextensive.
Journal Pramana - Journal of Physics
DOI https://doi.org/10.1007/s12043-022-02371-6
Researchers Mehdi Mirzaei (First researcher) , S.Mohammad Motevalli (Second researcher)


The propagation of solitons is studied in a tokamak plasma composed of immobile ions, hot fluid positrons and two electron sets with hot and cold temperatures with a q-non-extensive distribution. Korteweg–de Vries (KdV) equation is obtained via the reductive perturbation method (RPM). The dependence of positron-acoustic solitons on the ratio of hot /cold electrons density to positrons density, positrons temperature to temperature of hot/cold electrons, the non-extensivity parameters qeh and qec, as well as the angle between the magnetic field and wave propagation are investigated.