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Title: Initial results of a full kinetic simulation of RF H{sup −} source including Coulomb collision process

In order to evaluate Electron Energy Distribution Function (EEDF) more correctly for radio frequency inductively coupled plasma (RF-ICP) in hydrogen negative ion sources, the Electromagnetic Particle-In-Cell (EM-PIC) simulation code has been improved by taking into account electron-electron Coulomb collision. Binary collision model is employed to model Coulomb collision process and we have successfully modeled it. The preliminary calculation including Coulomb collision has been done and it is shown that Coulomb collision doesn’t have significant effects under the condition: electron density n{sub e} ∼ 10{sup 18} m{sup −3} and high gas pressure p{sub H{sub 2}} = 3 Pa, while it is necessary to include Coulomb collision under high electron density and low gas pressure conditions.
Authors:
; ; ;  [1] ; ;  [2]
  1. Graduate School of Science and Technology, Keio University, Kanagawa (Japan)
  2. CERN, Geneva (Switzerland)
Publication Date:
OSTI Identifier:
22391407
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1655; Journal Issue: 1; Conference: NIBS 2014: 4. International Symposium on Negative Ions, Beams and Sources, Garching (Germany), 6-10 Oct 2014; Other Information: (c) 2015 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; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; ELECTRON COLLISIONS; ELECTRON DENSITY; ELECTRONS; ENERGY SPECTRA; HYDROGEN IONS 1 MINUS; ION SOURCES; PLASMA; PLASMA SIMULATION; RADIOWAVE RADIATION; RF SYSTEMS