TY - JOUR
T1 - Low relativistic effects on the modulational instability of rogue waves in electronegative plasmas
AU - Panguetna, Chérif S.
AU - Tabi, Conrad B.
AU - Kofané, Timoléon C.
N1 - Funding Information:
This work is supported by the Botswana International University of Science and Technology under the Grant No. DVC/RDI/2/1/16I (25). CBT thanks the Kavli Institute for Theoretical Physics (KITP), University of California Santa Barbara (USA), where this work was supported in part by the National Science Foundation Grant No. NSF PHY-1748958 and NIH Grant No. R25GM067110.
Funding Information:
This work is supported by the Botswana International University of Science and Technology under the Grant No. DVC/RDI/2/1/16I (25). CBT thanks the Kavli Institute for Theoretical Physics (KITP), University of California Santa Barbara (USA), where this work was supported in part by the National Science Foundation Grant No. NSF PHY-1748958 and NIH Grant No. R25GM067110.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Relativistic ion-acoustic waves are investigated in an electronegative plasma. The use of the reductive perturbation method summarizes the hydrodynamic model to a nonlinear Schrödinger equation which supports the occurrence of modulational instability (MI). From the MI criterion, we derive a critical value for the relativistic parameter α1, below which MI may develop in the system. The MI analysis is then conducted considering the presence and absence of negative ions, coupled to effects of relativistic parameter and the electron-to-negative ion temperature ratio. Under high values of the latter, additional regions of instability are detected, and their spatial expansion is very sensitive to the change in α1 and may support the appearance of rogue waves whose behaviors are discussed. The parametric analysis of super-rogue wave amplitude is performed, where its enhancement is debated relatively to changes in α1, in the presence and absence of negative ions.
AB - Relativistic ion-acoustic waves are investigated in an electronegative plasma. The use of the reductive perturbation method summarizes the hydrodynamic model to a nonlinear Schrödinger equation which supports the occurrence of modulational instability (MI). From the MI criterion, we derive a critical value for the relativistic parameter α1, below which MI may develop in the system. The MI analysis is then conducted considering the presence and absence of negative ions, coupled to effects of relativistic parameter and the electron-to-negative ion temperature ratio. Under high values of the latter, additional regions of instability are detected, and their spatial expansion is very sensitive to the change in α1 and may support the appearance of rogue waves whose behaviors are discussed. The parametric analysis of super-rogue wave amplitude is performed, where its enhancement is debated relatively to changes in α1, in the presence and absence of negative ions.
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U2 - 10.1007/s40094-019-00342-8
DO - 10.1007/s40094-019-00342-8
M3 - Article
AN - SCOPUS:85070753543
SN - 2251-7227
VL - 13
SP - 237
EP - 249
JO - Journal of Theoretical and Applied Physics
JF - Journal of Theoretical and Applied Physics
IS - 3
ER -