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Title: Stochastic simulation of electron avalanches on supercomputers

In the paper, we present a three-dimensional parallel Monte Carlo algorithm named ELSHOW which is developed for simulation of electron avalanches in gases. Parallel implementation of the ELSHOW was made on supercomputers with different architectures (massive parallel and hybrid ones). Using the ELSHOW, calculations of such integral characteristics as the number of particles in an avalanche, the coefficient of impact ionization, the drift velocity, and the others were made. Also, special precise computations were made to select an appropriate size of the time step using the technique of dependent statistical tests. Particularly, the algorithm consists of special methods of distribution modeling, a lexicographic implementation scheme for “branching” of trajectories, justified estimation of functionals. A comparison of the obtained results for nitrogen with previously published theoretical and experimental data was made.
Authors:
;  [1]
  1. Institute of Computational Mathematics and Mathematical Geophysics of the SB RAS, Novosibirsk State University, Prospekt Akademika Lavrentieva 6, 6300090, Novosibirsk (Russian Federation)
Publication Date:
OSTI Identifier:
22390545
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1628; Journal Issue: 1; Conference: 29. International Symposium on Rarefied Gas Dynamics, Xi'an (China), 13-18 Jul 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; BRANCHING RATIO; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; E CODES; ELECTRONS; FUNCTIONALS; GASES; IMPLEMENTATION; INTEGRALS; IONIZATION; MONTE CARLO METHOD; NITROGEN; STOCHASTIC PROCESSES; SUPERCOMPUTERS; THREE-DIMENSIONAL CALCULATIONS; VELOCITY