Particle simulation of the strong magnetic field effect on dust particle charging process

Abstract

A particle-in-cell simulation is modeled and run on a dusty plasma to determine the effect of the magnetic field on the process of dust-particle charging through electron–ion plasma. The electric field is solved through the Poisson equation, and the electron-neutral elastic scattering, excitation, and ionization processes are modeled through Monte Carlo collision method. The effects observed from the initial density of the plasma, the initial temperature of the electrons, and the changing magnetic field are included in this simulation model. In the dust particle charging process, saturation time and saturation charge are compared. An increase in the magnetic field does not reduce time to reach the saturation state. Determining the magnetic field boundaries which depend on the physical properties of the plasma, can be contributive in some areas of dusty(complex) plasma. The applications of the results obtained here for fusion plasma conditions and space and laboratory plasmas are discussed. The results here can be applied in future simulation models with a focus on the dust particle movement and their effect on plasma, leading to the modeling of different astrophysical plasmas thorough laboratory experiments.

Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology

“…(e) The ion density and electric potential profile are almost independent of both, dust size as well as dust density [340]. (f) Results available from the RF-generated plasma suggest that the plasma and dust cloud appear to coexist and coupling of both is weak [340]. (g) Many-particle quantum mechanics calculations by Balzer et al [341] predict that energetic ion-particle collision can excite the electrons in the solid leading to the occupation of a single lattice position by two electrons thus forming a doubloon.…”

“…However, according to Petersen et al [333], the size dependence is weak. (e) The ion density and electric potential profile are almost independent of both, dust size as well as dust density [340]. (f) Results available from the RF-generated plasma suggest that the plasma and dust cloud appear to coexist and coupling of both is weak [340].…”

“…At this stage, several other manifestations of the dusty plasma phenomenon will not be considered. These include dust density waves, the formation of voids in the form of dust-free gas spaces, vortices and shock waves generated by dust particles [335][336][337][338][339][340][341].…”

Magnetized dusty plasma: On issues of its complexity and magnetization of charged dust particles

“…At the same time, Choudhary et al [55] estimated charge on magnetic and nonmagnetic spherical probes (large dust grains) in magnetized rf discharge. Theoretical study and computational experiments have been performed to understand the charging mechanism in magnetized plasma background [59,68,[70][71][72][73] However, there are inconsistencies in the numerically estimated and experimentally observed values of the dust charge in weakly magnetized dusty plasma. The available theoretical models to understand the charging mechanism of nonmagnetic (magnetic) solid spherical particles in the magnetized plasma (weakly and strongly) are incomplete.…”

“…There are few dusty plasma devices based on permanent magnet [52] and superconducting electromagnet [53][54][55] to conduct dusty plasma studies with strong magnetic field (few Tesla). Researchers are continuously working to explore the effect of strong magnetic field on low-temperature plasma and dusty plasma phenomena such as patterns formation, [56,57] imposed structure formation, [58] computational modeling of dust charging, [59] study of dust acoustic modes, [60,61] vertical oscillation of dust grain, [62] rotational and vortex motion, [25,63] crystallization and melting of dust grain medium, [64] Mach cone formation, [65] dusty plasma crystal as tunable terahertz (THz) filter, [66] etc. Despite having interesting experimental results on strongly magnetized dusty plasma, there are still many challenges to achieve magnetization conditions of charged dust grains and understand the experimentally observed results at kinetic level.…”