Electrostatic rogue waves in double pair plasmas

Area of Science:

• Plasma Physics
• Astrophysics
• Nonlinear Dynamics

Background:

• Ion-acoustic waves (IAWs) are fundamental in plasma physics.
• Double pair plasmas exhibit complex wave behaviors.
• Super-thermal charged particles significantly alter plasma dynamics.

Purpose of the Study:

• To analyze the modulational instability of IAWs in a double pair plasma.
• To identify conditions for stable and unstable wave propagation.
• To explore the generation of rogue waves in such systems.

Main Methods:

• Derivation of a nonlinear Schrödinger equation.
• Analytical investigation of wave modes and stability criteria.
• Analysis of the influence of plasma constituents on wave dynamics.

Main Results:

• Two distinct modes (fast and slow) of IAWs were identified.
• Stable and unstable regions for IAWs were determined under external perturbations.
• Negative ion density and positron density were found crucial for rogue wave generation.

Conclusions:

• The study provides a theoretical framework for understanding IAWs in complex plasmas.
• Results have implications for astrophysical environments like Earth's ionosphere and laboratory plasmas.
• The findings contribute to the prediction and control of rogue waves in plasmas.