High-speed null collision Monte Carlo method for plasma processing tasks Текст научной статьи по специальности «Физика»

82 Section2

High.speed

null

collision

Monte

Carlo

method

for

plasma

processing

tasks

V. A. Vshivkov, I. S. Chernoshtanov, A. A. Soloviev

InstituteofComputationalMathematicsandMathematicalGeophysicsSBRAS

Email:vsh@ssd.sscc.ru

DOI 10.24412/cl.35065.2021.1.00.98

The article discusses a high.performance null collision methodfor modeling collisionsin plasma.Adistinctive

feature of the proposed approach from the classical [1] is that it does not use trigonometric functions at

all, which can significantlyreduce the program execution time on modern processors. The approach is based

on theinteraction of each particle with an "average" (having averaged properties of all particles in the cell)

particle (instead of the classical approach based on pairwise interaction [2]). The most subtle point in this approach

is the conservation of energy and momentum of the entire system when changingthe trajectories and

velocityoftheparticles.Approachestosolvingthisproblemaregiven,experimentalresultsare discussed.The

effectiveness of the proposed approach is shown.

This work has been carried outwithin theframeworkof thebudget project0315.2019.0009 for ICMMG SB RASand

has been supported by the RFBR under grant18.29.21025.��.

References

1. C. K. Birdsall. Particle in Cell Monte Carlo Collision Codes (PIC.MCC); Methods and Applications to Plasma

Processing//Plasma Processingof Semiconductors: Springer,1997,p.277.289.

2. Tomonori Takizuka Hirotada Abe. A binary collision model for plasma simulation with a particle code // J. of

Computational Physics,V.25,No3,1977,p.205.219.